{"id":5086,"date":"2025-02-25T13:56:19","date_gmt":"2025-02-25T04:56:19","guid":{"rendered":"https:\/\/www.engineer-factory.com\/media\/?p=5086"},"modified":"2025-02-25T13:56:19","modified_gmt":"2025-02-25T04:56:19","slug":"kotlin%e5%ae%8c%e5%85%a8%e6%94%bb%e7%95%a5%ef%bc%81%e6%96%b0%e6%a9%9f%e8%83%bd%e3%81%ae%e7%b4%b9%e4%bb%8b%e3%81%8b%e3%82%89%e3%83%99%e3%82%b9%e3%83%88%e3%83%97%e3%83%a9%e3%82%af%e3%83%86%e3%82%a3","status":"publish","type":"post","link":"https:\/\/www.engineer-factory.com\/media\/skill\/5086\/","title":{"rendered":"Kotlin\u5b8c\u5168\u653b\u7565\uff01\u65b0\u6a5f\u80fd\u306e\u7d39\u4ecb\u304b\u3089\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u3001Java\u3068\u306e\u9055\u3044"},"content":{"rendered":"\n<p>Kotlin\u306f\u3001JetBrains\u304c\u958b\u767a\u3057\u305f\u30e2\u30c0\u30f3\u306a\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u8a00\u8a9e\u3067\u3059\u3002\u8fd1\u5e74\u306fAndroid\u30a2\u30d7\u30ea\u958b\u767a\u3084\u30b5\u30fc\u30d0\u30fc\u30b5\u30a4\u30c9\u958b\u767a\u306b\u304a\u3044\u3066\u63a1\u7528\u3055\u308c\u3001\u6ce8\u76ee\u3092\u96c6\u3081\u3066\u3044\u307e\u3059\u3002\u307e\u305f\u30b5\u30fc\u30d0\u30fc\u30b5\u30a4\u30c9\u958b\u767a\u306b\u3082\u9069\u3057\u3066\u3044\u308b\u305f\u3081\u3001Java\u3068\u306e\u4e92\u63db\u6027\u3092\u6d3b\u304b\u3059\u3053\u3068\u3067\u3001\u65e2\u5b58\u306e\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306b\u3082\u5bb9\u6613\u306b\u5c0e\u5165\u3067\u304d\u307e\u3059\u3002<br><br>\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001<strong><span class=\"swl-marker mark_yellow\">Kotlin\u306e\u57fa\u672c\u6a5f\u80fd\u304b\u3089\u6700\u65b0\u306e\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u3001\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u3001Java\u3068\u306e\u9055\u3044\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u89e3\u8aac<\/span><\/strong>\u3057\u307e\u3059\u3002\u3053\u308c\u304b\u3089Kotlin\u3092\u5b66\u3073\u305f\u3044\u65b9\u3084\u3001\u65e2\u306b\u4f7f\u7528\u3057\u3066\u3044\u308b\u4e2d\u5805\u30a8\u30f3\u30b8\u30cb\u30a2\u306e\u65b9\u306f\u3001\u305c\u3072\u53c2\u8003\u306b\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<div class=\"wp-block-group\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<div class=\"wp-block-group is-style-bg_stripe\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<div class=\"wp-block-group\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"1090\" height=\"558\" src=\"https:\/\/www.engineer-factory.com\/media\/wp-content\/uploads\/2025\/01\/KV.webp\" alt=\"\" class=\"wp-image-6584\" srcset=\"https:\/\/www.engineer-factory.com\/media\/wp-content\/uploads\/2025\/01\/KV.webp 1090w, https:\/\/www.engineer-factory.com\/media\/wp-content\/uploads\/2025\/01\/KV-300x154.webp 300w, https:\/\/www.engineer-factory.com\/media\/wp-content\/uploads\/2025\/01\/KV-1024x524.webp 1024w, https:\/\/www.engineer-factory.com\/media\/wp-content\/uploads\/2025\/01\/KV-768x393.webp 768w\" sizes=\"(max-width: 1090px) 100vw, 1090px\" \/><\/figure>\n\n\n\n<p><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-red-color\">\u30a8\u30f3\u30b8\u30cb\u30a2\u30d5\u30a1\u30af\u30c8\u30ea\u30fc<\/mark><\/strong>\u3067\u306f\u3001\u30d5\u30ea\u30fc\u30e9\u30f3\u30b9\u30a8\u30f3\u30b8\u30cb\u30a2\u306e\u6848\u4ef6\u30fb\u6c42\u4eba\u3092\u3054\u7d39\u4ecb\u3002<strong><span class=\"swl-marker mark_yellow\">\u63b2\u8f09\u4e2d\u306e\u6848\u4ef6\u306f10,000\u4ef6\u4ee5\u4e0a\u3002\u7d39\u4ecb\u3059\u308b\u6848\u4ef6\u306e\u5e73\u5747\u5e74\u5546\u306f810\u4e07\u5186\uff08\u203b2023\u5e744\u6708 \u9996\u90fd\u570f\u8fd1\u90ca\u306eIT\u30a8\u30f3\u30b8\u30cb\u30a2\u5bfe\u8c61\uff09\u3067\u3001\u3054\u7d4c\u9a13\u30fb\u5fd7\u5411\u306b\u5408\u3063\u305f\u6848\u4ef6\u3068\u51fa\u4f1a\u3048\u307e\u3059\u3002<\/span><\/strong><br><br>\u7c21\u5358\u306a\u30d7\u30ed\u30d5\u30a3\u30fc\u30eb\u5165\u529b\u3067\u3059\u3050\u306b\u30b5\u30dd\u30fc\u30c8\u3092\u958b\u59cb\u3002\u6848\u4ef6\u306b\u304a\u56f0\u308a\u306eIT\u30d5\u30ea\u30fc\u30e9\u30f3\u30b9\u306e\u65b9\u3084\u3088\u308a\u9ad8\u6761\u4ef6\u306e\u6848\u4ef6\u3068\u5de1\u308a\u5408\u3044\u305f\u3044\u3068\u8003\u3048\u3066\u3044\u308b\u65b9\u306f\u3001\u305c\u3072\u3054\u767b\u9332\u304f\u3060\u3055\u3044\u3002<\/p>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-buttons is-content-justification-center is-layout-flex wp-container-core-buttons-is-layout-16018d1d wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button has-custom-width wp-block-button__width-75 is-style-fill u-mb-ctrl u-mb-0\"><a class=\"wp-block-button__link has-luminous-vivid-orange-background-color has-background wp-element-button\" href=\"https:\/\/www.engineer-factory.com\/freelance\/jobs?utm_source=EF_media&amp;utm_medium=post_top_cta\" style=\"border-radius:20px\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>\u30a8\u30f3\u30b8\u30cb\u30a2\u30d5\u30a1\u30af\u30c8\u30ea\u30fc\u3067\u4eca\u3059\u3050\u6848\u4ef6\u3092\u898b\u3066\u307f\u308b<\/strong><\/a><\/div>\n<\/div>\n<\/div><\/div>\n<\/div><\/div>\n\n\n\n<div id=\"rtoc-mokuji-wrapper\" class=\"rtoc-mokuji-content frame2 preset1 animation-fade rtoc_open default\" data-id=\"5086\" data-theme=\"SWELL CHILD\">\n\t\t\t<div id=\"rtoc-mokuji-title\" class=\"rtoc_btn_none rtoc_left\">\n\t\t\t\n\t\t\t<span>\u3053\u306e\u8a18\u4e8b\u306e\u76ee\u6b21<\/span>\n\t\t\t<\/div><ol class=\"rtoc-mokuji decimal_ol level-1\"><li class=\"rtoc-item\"><a href=\"#rtoc-1\"><a><\/a>Kotlin\u3068\u306f\uff1f<\/a><\/li><li class=\"rtoc-item\"><a href=\"#rtoc-2\"><a><\/a>Kotlin\u306e\u65b0\u3057\u3044\u6a5f\u80fd\u3068\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u60c5\u5831<\/a><\/li><li class=\"rtoc-item\"><a href=\"#rtoc-3\"><a><\/a>Kotlin\u306e\u958b\u767a\u624b\u6cd5\u3068\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/a><\/li><li class=\"rtoc-item\"><a href=\"#rtoc-4\"><a><\/a>Kotlin\u3067\u53ef\u80fd\u306a\u958b\u767a\u9818\u57df<\/a><\/li><li class=\"rtoc-item\"><a href=\"#rtoc-5\"><a><\/a>Java\u3068\u6bd4\u8f03\u3057\u305fKotlin\u5c0e\u5165\u306e\u30e1\u30ea\u30c3\u30c8<\/a><\/li><li class=\"rtoc-item\"><a href=\"#rtoc-6\"><a><\/a>Kotlin\u5c0e\u5165\u306e\u30c7\u30e1\u30ea\u30c3\u30c8<\/a><\/li><li class=\"rtoc-item\"><a href=\"#rtoc-7\"><a><\/a>Kotlin\u3092\u5b66\u3076\u65b9\u6cd5<\/a><\/li><li class=\"rtoc-item\"><a href=\"#rtoc-8\"><a><\/a>Kotlin\u306e\u5c06\u6765\u6027\u3068\u30ad\u30e3\u30ea\u30a2\u30d1\u30b9<\/a><\/li><li class=\"rtoc-item\"><a href=\"#rtoc-9\"><a><\/a>Kotlin\u5c0e\u5165\u306b\u304a\u3051\u308b\u6ce8\u610f\u70b9<\/a><\/li><li class=\"rtoc-item\"><a href=\"#rtoc-10\">Kotlin\u6848\u4ef6\u306a\u3089\u30a8\u30f3\u30b8\u30cb\u30a2\u30d5\u30a1\u30af\u30c8\u30ea\u30fc<\/a><\/li><li class=\"rtoc-item\"><a href=\"#rtoc-11\"><a><\/a>\u307e\u3068\u3081<\/a><\/li><\/ol><\/div><h2 id=\"rtoc-1\"  class=\"wp-block-heading\"><a><\/a>Kotlin\u3068\u306f\uff1f<\/h2>\n\n\n\n<p>Kotlin\u306f2011\u5e74\u3001\u7d71\u5408\u958b\u767a\u74b0\u5883\u306e\u30ea\u30fc\u30c7\u30a3\u30f3\u30b0\u30ab\u30f3\u30d1\u30cb\u30fc\u3067\u3042\u308bJetBrains\u793e\u306b\u3088\u3063\u3066\u8a95\u751f\u3057\u305f\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u8a00\u8a9e\u3067\u3059\u3002<strong><span class=\"swl-marker mark_yellow\">Java\u4eee\u60f3\u30de\u30b7\u30f3\u4e0a\u3067\u52d5\u4f5c\u3059\u308b\u9759\u7684\u578b\u4ed8\u3051\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u6307\u5411\u8a00\u8a9e\u3068\u3057\u3066\u3001\u30e2\u30c0\u30f3\u306a\u958b\u767a\u74b0\u5883\u306b\u6700\u9069\u5316\u3055\u308c\u305f\u8a2d\u8a08\u304c\u7279\u5fb4<\/span><\/strong>\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u7279\u7b46\u3059\u3079\u304d\u306f<strong><span class=\"swl-marker mark_yellow\">Java\u3068100%\u4e92\u63db\u6027\u304c\u3042\u308a\u3064\u3064\u3001\u7c21\u6f54\u3067\u5b89\u5168\u6027\u306e\u9ad8\u3044\u30b3\u30fc\u30c9\u304c\u66f8\u3051\u308b<\/span><\/strong>\u70b9\u3067\u3059\u3002\u3053\u306e\u7279\u6027\u306b\u3088\u308a\u3001\u65e2\u5b58\u306eJava\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u304b\u3089\u306e\u6bb5\u968e\u7684\u306a\u79fb\u884c\u3082\u5186\u6ed1\u306b\u9032\u3081\u3089\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u8fd1\u5e74\u3001Google\u793e\u304cAndroid\u306e\u516c\u5f0f\u958b\u767a\u8a00\u8a9e\u3068\u3057\u3066\u63a1\u7528\u3057\u305f\u305f\u3081\u3001\u30e2\u30d0\u30a4\u30eb\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u958b\u767a\u306e\u5206\u91ce\u3067\u3082\u6ce8\u76ee\u3092\u96c6\u3081\u307e\u3057\u305f\u3002JVM\u8a00\u8a9e\u3068\u3057\u3066\u306e\u5805\u7262\u6027\u3068\u3001\u6700\u65b0\u306e\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u30d1\u30e9\u30c0\u30a4\u30e0\u3092\u53d6\u308a\u5165\u308c\u305f\u67d4\u8edf\u306a\u6587\u6cd5\u306b\u3088\u308a\u3001\u958b\u767a\u8005\u306e\u751f\u7523\u6027\u5411\u4e0a\u306b\u5927\u304d\u304f\u8ca2\u732e\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-wp-embed\"><div class=\"wp-block-embed__wrapper\">\nhttps:\/\/www.engineer-factory.com\/media\/skill\/4145\/\n<\/div><\/figure>\n\n\n\n<h2 id=\"rtoc-2\"  class=\"wp-block-heading\"><a><\/a>Kotlin\u306e\u65b0\u3057\u3044\u6a5f\u80fd\u3068\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u60c5\u5831<\/h2>\n\n\n\n<p>\u3053\u3053\u304b\u3089\u306f\u3001Kotlin\u306e\u65b0\u3057\u3044\u6a5f\u80fd\u3068\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u60c5\u5831\u306b\u3064\u3044\u3066\u3001\u8a73\u3057\u304f\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><a><\/a>\u6700\u65b0\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u3067\u8ffd\u52a0\u3055\u308c\u305f\u4e3b\u8981\u6a5f\u80fd<\/h3>\n\n\n\n<p>2024\u5e745\u6708\u306b\u30ea\u30ea\u30fc\u30b9\u3055\u308c\u305f\u30d0\u30fc\u30b8\u30e7\u30f32.0\u3067\u306f\u3001\u958b\u767a\u8005\u306b\u3068\u3063\u3066\u6ce8\u76ee\u3059\u3079\u304d\u65b0\u6a5f\u80fd\u304c\u591a\u6570\u8ffd\u52a0\u3055\u308c\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<p>\u8ffd\u52a0\u3055\u308c\u305f\u4e3b\u306a\u6a5f\u80fd\u306f\u3001\u4ee5\u4e0b\u3067\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Kotlin K2\u30b3\u30f3\u30d1\u30a4\u30e9\u5b89\u5b9a\u677f<\/li>\n\n\n\n<li>\u5f37\u5316\u3055\u308c\u305f\u30b9\u30de\u30fc\u30c8\u30ad\u30e3\u30b9\u30c8\u6a5f\u80fd<\/li>\n\n\n\n<li>\u5024\u30af\u30e9\u30b9\uff08Value Classes\uff09\u306e\u4e0d\u5909\u6027\u30b5\u30dd\u30fc\u30c8<\/li>\n<\/ul>\n\n\n\n<p>\u307e\u305aKotlin K2\u30b3\u30f3\u30d1\u30a4\u30e9\u304c\u5b89\u5b9a\u7248\u3068\u3057\u3066\u5c0e\u5165\u3055\u308c\u3001<strong><span class=\"swl-marker mark_yellow\">JVM\u3001\u30cd\u30a4\u30c6\u30a3\u30d6\u3001Wasm\u3001JS\u306a\u3069\u3059\u3079\u3066\u306e\u30bf\u30fc\u30b2\u30c3\u30c8\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u3067\u30c7\u30d5\u30a9\u30eb\u30c8\u3068\u306a\u3063\u305f<\/span><\/strong>\u306e\u3067\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u304c\u5411\u4e0a\u3057\u3001\u30de\u30eb\u30c1\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u958b\u767a\u304c\u3057\u3084\u3059\u304f\u306a\u308a\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<p>\u3055\u3089\u306b\u3001<span class=\"swl-marker mark_yellow\">\u30b9\u30de\u30fc\u30c8\u30ad\u30e3\u30b9\u30c8\u6a5f\u80fd\u304c\u5f37\u5316<\/span>\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u30ed\u30fc\u30ab\u30eb\u5909\u6570\u3084\u30b9\u30b3\u30fc\u30d7\u5168\u4f53\u3067\u306e\u30b9\u30de\u30fc\u30c8\u30ad\u30e3\u30b9\u30c8\u60c5\u5831\u306e\u4fdd\u6301\u3001\u8ad6\u7406OR\u6f14\u7b97\u5b50\u3067\u306e\u6700\u3082\u8fd1\u3044\u5171\u901a\u30b9\u30fc\u30d1\u30fc\u30bf\u30a4\u30d7\u3078\u306e\u30ad\u30e3\u30b9\u30c8\u3001\u30a4\u30f3\u30e9\u30a4\u30f3\u95a2\u6570\u5185\u3067\u306e\u5b89\u5168\u306a\u30b9\u30de\u30fc\u30c8\u30ad\u30e3\u30b9\u30c8\u306a\u3069\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3057\u305f\u3002\u30b3\u30fc\u30c9\u306e\u5b89\u5168\u6027\u3068\u53ef\u8aad\u6027\u306e\u5411\u4e0a\u304c\u671f\u5f85\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u307e\u305f\u3001Kotlin 2.0\u3067\u306f\u3001\u5024\u30af\u30e9\u30b9\uff08Value Classes\uff09\u306e\u4e0d\u5909\u6027\u304c\u30b5\u30dd\u30fc\u30c8\u3055\u308c\u3001\u5b9a\u7fa9\u3057\u305f\u30d7\u30ed\u30d1\u30c6\u30a3\u304c\u5909\u66f4\u3067\u304d\u306a\u3044\u3088\u3046\u306b\u3059\u308b\u6a5f\u80fd\u304c\u5f37\u5316\u3055\u308c\u307e\u3057\u305f\u3002\u3053\u308c\u306b\u3088\u308a\u3001<strong><span class=\"swl-marker mark_yellow\">\u30b9\u30ec\u30c3\u30c9\u30bb\u30fc\u30d5\u306a\u30b3\u30fc\u30c9\u3092\u3088\u308a\u7c21\u5358\u306b\u8a18\u8ff0\u3067\u304d\u3001\u4e26\u884c\u51e6\u7406\u3092\u542b\u3080\u30b7\u30b9\u30c6\u30e0\u3067\u3082\u30c7\u30fc\u30bf\u7af6\u5408\u3092\u9632\u3050\u3053\u3068\u304c\u53ef\u80fd\u306b<\/span><\/strong>\u306a\u308a\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<p>\u3055\u3089\u306bKotlin 2.0\u3067\u306f\u3001\u5171\u901a\u30bd\u30fc\u30b9\u3068\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u30bd\u30fc\u30b9\u306e\u5206\u96e2\u304c\u5f37\u5316\u3055\u308c\u3001\u30de\u30eb\u30c1\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306b\u304a\u3051\u308b\u30b3\u30f3\u30d1\u30a4\u30eb\u4e2d\u306e\u53b3\u5bc6\u306a\u5206\u96e2\u304c\u4fdd\u8a3c\u3055\u308c\u307e\u3057\u305f\u3002\u3053\u308c\u306b\u3088\u308a\u30a2\u30af\u30bb\u30b9\u554f\u984c\u3092\u9632\u304e\u3001\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u9593\u3067\u4e00\u8cab\u3057\u305f\u52d5\u4f5c\u3092\u7dad\u6301\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u65b0\u6a5f\u80fd\u306b\u3088\u308a\u3001Kotlin\u306f\u3055\u3089\u306b\u5f37\u529b\u3067\u4f7f\u3044\u3084\u3059\u3044\u8a00\u8a9e\u3068\u306a\u308a\u3001\u958b\u767a\u8005\u306e\u751f\u7523\u6027\u3068\u30b3\u30fc\u30c9\u306e\u54c1\u8cea\u5411\u4e0a\u306b\u5927\u304d\u304f\u5bc4\u4e0e\u3059\u308b\u3067\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><a><\/a>\u958b\u767a\u8005\u304c\u6ce8\u76ee\u3059\u3079\u304d\u65b0\u3057\u3044\u30c4\u30fc\u30eb\u3068\u6539\u5584\u70b9<\/h3>\n\n\n\n<p>Kotlin\u306f\u3001\u6700\u65b0\u306e\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u3067\u958b\u767a\u8005\u306b\u3068\u3063\u3066\u9b45\u529b\u7684\u306a\u65b0\u6a5f\u80fd\u3068\u30c4\u30fc\u30eb\u304c\u8ffd\u52a0\u3055\u308c\u307e\u3057\u305f\u3002\u7279\u306b\u6ce8\u76ee\u3059\u3079\u304d\u306f\u30de\u30eb\u30c1\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u958b\u767a\u306e\u5f37\u5316\u3067\u3059\u3002<\/p>\n\n\n\n<p><strong><span class=\"swl-marker mark_yellow\">Kotlin Multiplatform\u306f\u3001\u5171\u901a\u306e\u30b3\u30fc\u30c9\u30d9\u30fc\u30b9\u304b\u3089iOS\u3084Android\u306a\u3069\u8907\u6570\u306e\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u5411\u3051\u306b\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3092\u69cb\u7bc9\u3067\u304d\u308b\u6a5f\u80fd<\/span><\/strong>\u3067\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u30b3\u30fc\u30c9\u306e\u518d\u5229\u7528\u6027\u304c\u5411\u4e0a\u3057\u3001\u958b\u767a\u52b9\u7387\u304c\u5927\u5e45\u306b\u6539\u5584\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u307e\u305fJetpack Compose for Desktop\u306e\u30ea\u30ea\u30fc\u30b9\u306b\u3088\u308a\u3001\u30c7\u30b9\u30af\u30c8\u30c3\u30d7\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306eUI\u958b\u767a\u304c\u7c21\u7d20\u5316\u3055\u308c\u307e\u3057\u305f\u3002Jetpack Compose\u3068\u306f\u3001\u5ba3\u8a00\u7684\u306aUI\u69cb\u7bc9\u3092\u53ef\u80fd\u306b\u3059\u308b\u30c4\u30fc\u30eb\u3067\u3001\u3053\u308c\u307e\u3067Android\u958b\u767a\u3067\u5229\u7528\u3055\u308c\u3066\u304d\u307e\u3057\u305f\u3002\u3055\u3089\u306b\u30c7\u30b9\u30af\u30c8\u30c3\u30d7\u74b0\u5883\u306b\u3082\u5bfe\u5fdc\u3059\u308b\u3053\u3068\u3067\u3001\u3088\u308a\u591a\u304f\u306e\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u3067\u4e00\u8cab\u3057\u305fUI\u958b\u767a\u304c\u53ef\u80fd\u3068\u306a\u3063\u305f\u306e\u3067\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u958b\u767a\u8005\u306f\u540c\u3058\u30c4\u30fc\u30eb\u30bb\u30c3\u30c8\u3067\u30e2\u30d0\u30a4\u30eb\u3068\u30c7\u30b9\u30af\u30c8\u30c3\u30d7\u306e\u4e21\u65b9\u306eUI\u3092\u69cb\u7bc9\u3067\u304d\u3001\u5b66\u7fd2\u30b3\u30b9\u30c8\u306e\u524a\u6e1b\u3068\u958b\u767a\u30b9\u30d4\u30fc\u30c9\u306e\u5411\u4e0a\u304c\u671f\u5f85\u3067\u304d\u308b\u3067\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<p>\u3055\u3089\u306bKotlin\u306e\u65b0\u30d0\u30fc\u30b8\u30e7\u30f3\u3067\u306f\u3001\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u6700\u9069\u5316\u3084\u65b0\u3057\u3044\u8a00\u8a9e\u6a5f\u80fd\u306e\u8ffd\u52a0\u304c\u884c\u308f\u308c\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u6539\u5584\u306b\u3088\u308a\u958b\u767a\u8005\u306f\u3001\u3088\u308a\u52b9\u7387\u7684\u3067\u5b89\u5168\u306a\u30b3\u30fc\u30c9\u3092\u66f8\u3051\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3057\u305f\u3002\u4f8b\u3048\u3070\u3001\u578b\u63a8\u8ad6\u306e\u5f37\u5316\u3084\u30b3\u30eb\u30fc\u30c1\u30f3\u306e\u6700\u9069\u5316\u306a\u3069\u304c\u6319\u3052\u3089\u308c\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u6a5f\u80fd\u306e\u6d3b\u7528\u306b\u3088\u308a\u958b\u767a\u8005\u306f\u8907\u96d1\u306a\u975e\u540c\u671f\u51e6\u7406\u3092\u7c21\u6f54\u306b\u8a18\u8ff0\u3067\u304d\u308b\u305f\u3081\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u30ec\u30b9\u30dd\u30f3\u30b9\u5411\u4e0a\u306b\u3064\u306a\u304c\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h2 id=\"rtoc-3\"  class=\"wp-block-heading\"><a><\/a>Kotlin\u306e\u958b\u767a\u624b\u6cd5\u3068\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/h2>\n\n\n\n<p>\u3053\u3053\u304b\u3089\u306f\u3001\u4ee5\u4e0b3\u70b9\u306eKotlin\u306e\u958b\u767a\u624b\u6cd5\u3068\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u3092\u8a73\u3057\u304f\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><a><\/a>\u52b9\u7387\u7684\u306a\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u3092\u5b9f\u73fe\u3059\u308b\u65b9\u6cd5<\/h3>\n\n\n\n<p>Kotlin\u3067\u52b9\u7387\u7684\u306a\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u3092\u5b9f\u73fe\u3059\u308b\u305f\u3081\u306b\u306f\u3001\u4ee5\u4e0b\u306e\u624b\u6cd5\u304c\u6709\u52b9\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u307e\u305a\u3001\u4e0d\u5909\u6027\u306e\u78ba\u4fdd\u304c\u91cd\u8981\u3067\u3059\u3002<strong><span class=\"swl-marker mark_yellow\">val\u30ad\u30fc\u30ef\u30fc\u30c9\u3092\u4f7f\u7528\u3057\u3066\u4e0d\u5909\u306e\u5909\u6570\u3092\u5ba3\u8a00\u3059\u308b\u3053\u3068\u3067\u3001\u4e88\u671f\u3057\u306a\u3044\u5909\u66f4\u3092\u9632\u304e\u3001\u30b3\u30fc\u30c9\u306e\u5b89\u5168\u6027\u3068\u53ef\u8aad\u6027\u3092\u9ad8\u3081\u3089\u308c\u307e\u3059<\/span><\/strong>\u3002\u4f8b\u3048\u3070val name = &#8220;Kotlin&#8221;\u3068\u5ba3\u8a00\u3059\u308b\u3068\u3001name\u306e\u5024\u306f\u518d\u4ee3\u5165\u3067\u304d\u306a\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u6b21\u306b\u62e1\u5f35\u95a2\u6570\u306e\u6d3b\u7528\u306b\u3088\u308a\u3001\u65e2\u5b58\u306e\u30af\u30e9\u30b9\u306b\u65b0\u305f\u306a\u6a5f\u80fd\u3092\u8ffd\u52a0\u3067\u304d\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u30b3\u30fc\u30c9\u306e\u518d\u5229\u7528\u6027\u3068\u53ef\u8aad\u6027\u304c\u9ad8\u307e\u308b\u306e\u3067\u3059\u3002\u4f8b\u3048\u3070fun String.isEmailValid(): Boolean\u3068\u5b9a\u7fa9\u3059\u308c\u3070\u3001\u6587\u5b57\u5217\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3067\u76f4\u63a5isEmailValid()\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u307e\u305f\u30c7\u30fc\u30bf\u30af\u30e9\u30b9\u306e\u5229\u7528\u306b\u3088\u308a\u3001equals()\u3084hashCode()\u3001toString()\u306a\u3069\u306e\u30e1\u30bd\u30c3\u30c9\u304c\u81ea\u52d5\u751f\u6210\u3055\u308c\u3001\u30dc\u30a4\u30e9\u30fc\u30d7\u30ec\u30fc\u30c8\u30b3\u30fc\u30c9\u3092\u524a\u6e1b\u53ef\u80fd\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u624b\u6cd5\u3092\u7d44\u307f\u5408\u308f\u305b\u3066\u6d3b\u7528\u3059\u308b\u3053\u3068\u3067\u3001Kotlin\u3067\u306e\u958b\u767a\u52b9\u7387\u304c\u5411\u4e0a\u3057\u3001\u4fdd\u5b88\u6027\u306e\u9ad8\u3044\u30b3\u30fc\u30c9\u30d9\u30fc\u30b9\u3092\u69cb\u7bc9\u3067\u304d\u308b\u3067\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><a><\/a>\u30a8\u30e9\u30fc\u51e6\u7406\u3068\u975e\u540c\u671f\u51e6\u7406\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/h3>\n\n\n\n<p>Kotlin\u3067\u52b9\u7387\u7684\u306a\u30a8\u30e9\u30fc\u51e6\u7406\u3068\u975e\u540c\u671f\u51e6\u7406\u3092\u884c\u3046\u306b\u306f\u3001\u30b3\u30eb\u30fc\u30c1\u30f3\u306e\u9069\u5207\u306a\u6d3b\u7528\u304c\u91cd\u8981\u3067\u3059\u3002<strong><span class=\"swl-marker mark_yellow\">suspend \u95a2\u6570\u3092\u5b9a\u7fa9\u3057\u3001async \u3084 launch \u3092\u7528\u3044\u308b\u3053\u3068\u3067\u3001\u975e\u540c\u671f\u30bf\u30b9\u30af\u3092\u4e26\u5217\u306b\u5b9f\u884c<\/span><\/strong>\u3067\u304d\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u306e\u30cd\u30b9\u30c8\u3092\u907f\u3051\u3001\u30b3\u30fc\u30c9\u306e\u53ef\u8aad\u6027\u3068\u4fdd\u5b88\u6027\u3092\u5411\u4e0a\u3055\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u30a8\u30e9\u30fc\u51e6\u7406\u3067\u306f\u3001try-catch \u30d6\u30ed\u30c3\u30af\u3092\u6d3b\u7528\u3057\u3001\u4f8b\u5916\u3092\u9069\u5207\u306b\u6355\u6349\u3059\u308b\u3053\u3068\u304c\u63a8\u5968\u3055\u308c\u307e\u3059\u3002\u7279\u306b\u30b3\u30eb\u30fc\u30c1\u30f3\u5185\u3067\u306e\u30a8\u30e9\u30fc\u51e6\u7406\u306f\u3001\u901a\u5e38\u306e\u540c\u671f\u30b3\u30fc\u30c9\u3068\u540c\u3058\u5f62\u5f0f\u3067\u8a18\u8ff0\u53ef\u80fd\u306a\u305f\u3081\u3001\u975e\u540c\u671f\u51e6\u7406\u7279\u6709\u306e\u8907\u96d1\u3055\u3092\u8efd\u6e1b\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3010<strong>\u5b9f\u8df5\u7684\u306a\u30a8\u30e9\u30fc\u51e6\u7406\u306e\u4f8b<\/strong>\u3011<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>import kotlinx.coroutines.*\n\nfun main() = runBlocking {\n    try {\n        val result = async { fetchData() }.await()\n        println(result)\n    } catch (e: Exception) {\n        println(\"\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u307e\u3057\u305f: ${e.message}\")\n    }\n}\n\nsuspend fun fetchData(): String {\n    delay(1000) \/\/ \u975e\u540c\u671f\u3067\u30c7\u30fc\u30bf\u3092\u53d6\u5f97\u3059\u308b\u51e6\u7406\n    return \"\u30c7\u30fc\u30bf\u53d6\u5f97\u6210\u529f\"\n}\n<\/code><\/pre>\n\n\n\n<p>\u3053\u306e\u30b3\u30fc\u30c9\u3067\u306f\u3001<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>async \u3092\u4f7f\u7528\u3057\u3001\u975e\u540c\u671f\u51e6\u7406\u306e\u7d50\u679c\u3092 await() \u3067\u53d6\u5f97<\/li>\n\n\n\n<li>try-catch \u3092\u9069\u7528\u3057\u3001\u767a\u751f\u3057\u305f\u4f8b\u5916\u3092\u9069\u5207\u306b\u51e6\u7406<\/li>\n\n\n\n<li>runBlocking \u3092\u30a8\u30f3\u30c8\u30ea\u30fc\u30dd\u30a4\u30f3\u30c8\u3067\u306e\u307f\u4f7f\u7528\u3057\u3001\u4ed6\u306e\u51e6\u7406\u306b\u306f\u5f71\u97ff\u3092\u4e0e\u3048\u306a\u3044\u3088\u3046\u306b\u8a2d\u8a08<\/li>\n<\/ul>\n\n\n\n<p>\u5b9f\u52d9\u3067\u306f\u30011\u3064\u306e\u975e\u540c\u671f\u51e6\u7406\u304c\u5931\u6557\u3057\u3066\u3082\u3001\u4ed6\u306e\u51e6\u7406\u306b\u5f71\u97ff\u3092\u4e0e\u3048\u305a\u306b\u5b9f\u884c\u3067\u304d\u308b\u3088\u3046\u306b\u3059\u308b\u3053\u3068\u304c\u6c42\u3081\u3089\u308c\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u3001supervisorScope \u3092\u5229\u7528\u3059\u308b\u3068\u3001\u500b\u3005\u306e\u51e6\u7406\u304c\u72ec\u7acb\u3057\u3066\u52d5\u4f5c\u3057\u3084\u3059\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>import kotlinx.coroutines.*\n\nfun main() = runBlocking {\n    supervisorScope {\n        try {\n            val result = async { fetchData() }.await()\n            println(result)\n        } catch (e: Exception) {\n            println(\"\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u307e\u3057\u305f: ${e.message}\")\n        }\n    }\n}\n\nsuspend fun fetchData(): String {\n    delay(1000) \/\/ \u975e\u540c\u671f\u3067\u30c7\u30fc\u30bf\u3092\u53d6\u5f97\u3059\u308b\u51e6\u7406\n    throw RuntimeException(\"\u30c7\u30fc\u30bf\u53d6\u5f97\u5931\u6557\") \/\/ \u30a8\u30e9\u30fc\u767a\u751f\n}<\/code><\/pre>\n\n\n\n<p>\u3053\u306e\u5b9f\u88c5\u3067\u306f\u3001supervisorScope\u3092\u5229\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u3066\u3082\u4ed6\u306e\u30b3\u30eb\u30fc\u30c1\u30f3\u306e\u52d5\u4f5c\u3092\u59a8\u3052\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><a><\/a>\u5b9f\u52d9\u3067\u4f7f\u3048\u308b\u30c7\u30b6\u30a4\u30f3\u30d1\u30bf\u30fc\u30f3\u306e\u6d3b\u7528\u4e8b\u4f8b<\/h3>\n\n\n\n<p>Kotlin\u306f\u3001\u30e2\u30c0\u30f3\u306a\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u8a00\u8a9e\u3068\u3057\u3066\u3001\u591a\u304f\u306e\u958b\u767a\u8005\u306b\u652f\u6301\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u305d\u306e\u4e2d\u3067\u3082\u3001\u30c7\u30b6\u30a4\u30f3\u30d1\u30bf\u30fc\u30f3\u306e\u6d3b\u7528\u306f\u3001\u30b3\u30fc\u30c9\u306e\u518d\u5229\u7528\u6027\u3084\u4fdd\u5b88\u6027\u3092\u9ad8\u3081\u308b\u4e0a\u3067\u91cd\u8981\u3067\u3059\u3002\u3053\u3053\u3067\u306f\u4ee5\u4e0b\u306e<strong><span class=\"swl-marker mark_yellow\">Kotlin\u3067\u3088\u304f\u4f7f\u7528\u3055\u308c\u308b\u4e3b\u8981\u306a\u30c7\u30b6\u30a4\u30f3\u30d1\u30bf\u30fc\u30f3\u3068\u3001\u305d\u306e\u5b9f\u52d9\u3067\u306e\u5fdc\u7528\u4f8b\u3001\u5177\u4f53\u7684\u306a\u30e1\u30ea\u30c3\u30c8<\/span><\/strong>\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u30b7\u30f3\u30b0\u30eb\u30c8\u30f3\u30d1\u30bf\u30fc\u30f3<\/h3>\n\n\n\n<p>\u7279\u5b9a\u306e\u30af\u30e9\u30b9\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u30921\u3064\u3060\u3051\u306b\u5236\u9650\u3059\u308b\u30d1\u30bf\u30fc\u30f3\u3067\u3059\u3002\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u5168\u4f53\u3067\u5171\u6709\u3059\u308b\u8a2d\u5b9a\u60c5\u5831\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u63a5\u7d9a\u7ba1\u7406\u306e\u7528\u9014\u3067\u4f7f\u7528\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3010<strong>\u5b9f\u88c5\u4f8b\uff08Kotlin\u306e object \u3092\u6d3b\u7528\uff09<\/strong>\u3011<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>object AppConfig {\n    val baseUrl = \"https:\/\/example.com\"\n}<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u30d5\u30a1\u30af\u30c8\u30ea\u30fc\u30d1\u30bf\u30fc\u30f3<\/h3>\n\n\n\n<p>\u30d5\u30a1\u30af\u30c8\u30ea\u30fc\u30d1\u30bf\u30fc\u30f3\u306f\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u751f\u6210\u3092\u5c02\u9580\u306e\u30af\u30e9\u30b9\u3084\u30e1\u30bd\u30c3\u30c9\u306b\u59d4\u306d\u308b\u8a2d\u8a08\u624b\u6cd5\u3067\u3059\u3002\u4f8b\u3048\u3070\u7570\u306a\u308b\u8a2d\u5b9a\u306b\u5fdc\u3058\u3066\u9069\u5207\u306a\u30b5\u30d6\u30af\u30e9\u30b9\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u8fd4\u3059\u969b\u306b\u3001\u3053\u306e\u30d1\u30bf\u30fc\u30f3\u304c\u5f79\u7acb\u3061\u307e\u3059\u3002\u8a2d\u5b9a\u306b\u5fdc\u3058\u3066\u7570\u306a\u308b\u30af\u30e9\u30b9\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u751f\u6210\u3059\u308b\u5834\u9762\u3067\u4f7f\u7528\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3010<strong>\u5b9f\u88c5\u4f8b<\/strong>\u3011<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>interface Logger {\n    fun log(message: String)\n}\n\nclass FileLogger : Logger {\n    override fun log(message: String) = println(\"FileLogger: $message\")\n}\n\nclass ConsoleLogger : Logger {\n    override fun log(message: String) = println(\"ConsoleLogger: $message\")\n}\n\nobject LoggerFactory {\n    fun createLogger(type: String): Logger = when (type) {\n        \"file\" -> FileLogger()\n        else -> ConsoleLogger()\n    }\n}<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u30c7\u30b3\u30ec\u30fc\u30bf\u30fc\u30d1\u30bf\u30fc\u30f3<\/h3>\n\n\n\n<p>\u30c7\u30b3\u30ec\u30fc\u30bf\u30fc\u30d1\u30bf\u30fc\u30f3\u306f\u3001\u65e2\u5b58\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306b\u65b0\u305f\u306a\u6a5f\u80fd\u3092\u8ffd\u52a0\u3059\u308b\u8a2d\u8a08\u624b\u6cd5\u3067\u3059\u3002Kotlin\u306e\u62e1\u5f35\u95a2\u6570\u3092\u7528\u3044\u308b\u3053\u3068\u3067\u3001\u65e2\u5b58\u306e\u30af\u30e9\u30b9\u306b\u5bfe\u3057\u3066\u65b0\u3057\u3044\u30e1\u30bd\u30c3\u30c9\u3092\u8ffd\u52a0\u3067\u304d\u307e\u3059\u3002\u30ed\u30b0\u51fa\u529b\u6642\u306b\u8ffd\u52a0\u306e\u51e6\u7406\u3092\u52a0\u3048\u308b\uff08\u4f8b: \u65e5\u4ed8\u306e\u8ffd\u52a0\u3001\u6697\u53f7\u5316\u306a\u3069\uff09\u305f\u3081\u306b\u4f7f\u7528\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong>\u3010\u5b9f\u88c5\u4f8b\u3011<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>interface Notifier {\n    fun send(message: String)\n}\n\nclass BasicNotifier : Notifier {\n    override fun send(message: String) = println(\"\u901a\u77e5: $message\")\n}\n\nclass NotifierDecorator(private val notifier: Notifier) : Notifier {\n    override fun send(message: String) {\n        println(\"&#91;\u8ffd\u52a0\u51e6\u7406] \u901a\u77e5\u3092\u9001\u4fe1\u4e2d...\")\n        notifier.send(message)\n    }\n}\n\nfun main() {\n    val notifier = NotifierDecorator(BasicNotifier())\n    notifier.send(\"\u30e1\u30c3\u30bb\u30fc\u30b8\u9001\u4fe1\")\n}<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u30b9\u30c8\u30e9\u30c6\u30b8\u30fc\u30d1\u30bf\u30fc\u30f3<\/h3>\n\n\n\n<p>\u30b9\u30c8\u30e9\u30c6\u30b8\u30fc\u30d1\u30bf\u30fc\u30f3\u306f\u3001\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3092\u30af\u30e9\u30b9\u3068\u3057\u3066\u5206\u96e2\u3057\u3001\u52d5\u7684\u306b\u5207\u308a\u66ff\u3048\u53ef\u80fd\u306b\u3059\u308b\u8a2d\u8a08\u624b\u6cd5\u3067\u3059\u3002\u4f8b\u3048\u3070\u30bd\u30fc\u30c8\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3092\u52d5\u7684\u306b\u5909\u66f4\u3059\u308b\u5834\u5408\u306b\u3001\u3053\u306e\u30d1\u30bf\u30fc\u30f3\u304c\u9069\u7528\u3067\u304d\u307e\u3059\u3002\u691c\u7d22\u30a8\u30f3\u30b8\u30f3\u306e\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u3001\u7570\u306a\u308b\u652f\u6255\u3044\u65b9\u6cd5\u306e\u9078\u629e\u306a\u3069\u3067\u4f7f\u7528\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong>\u3010\u5b9f\u88c5\u4f8b\u3011<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>interface SortStrategy {\n    fun sort(list: List&lt;Int>): List&lt;Int>\n}\n\nclass QuickSort : SortStrategy {\n    override fun sort(list: List&lt;Int>) = list.sorted()\n}\n\nclass ReverseSort : SortStrategy {\n    override fun sort(list: List&lt;Int>) = list.sortedDescending()\n}\n\nclass SortContext(private var strategy: SortStrategy) {\n    fun setStrategy(strategy: SortStrategy) {\n        this.strategy = strategy\n    }\n\n    fun executeStrategy(list: List&lt;Int>) = strategy.sort(list)\n}\n\nfun main() {\n    val context = SortContext(QuickSort())\n    println(context.executeStrategy(listOf(3, 1, 2)))\n\n    context.setStrategy(ReverseSort())\n    println(context.executeStrategy(listOf(3, 1, 2)))\n}<\/code><\/pre>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u30c7\u30b6\u30a4\u30f3\u30d1\u30bf\u30fc\u30f3\u3092\u9069\u5207\u306b\u6d3b\u7528\u3059\u308b\u3053\u3068\u3067\u3001Kotlin\u3067\u306e\u958b\u767a\u52b9\u7387\u304c\u5411\u4e0a\u3057\u3001\u4fdd\u5b88\u6027\u306e\u9ad8\u3044\u30b3\u30fc\u30c9\u30d9\u30fc\u30b9\u3092\u69cb\u7bc9\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 id=\"rtoc-4\"  class=\"wp-block-heading\"><a><\/a>Kotlin\u3067\u53ef\u80fd\u306a\u958b\u767a\u9818\u57df<\/h2>\n\n\n\n<p>\u3053\u3053\u304b\u3089\u306f\u3001Kotlin\u3067\u53ef\u80fd\u306a\u4ee5\u4e0b3\u3064\u306e\u958b\u767a\u9818\u57df\u306b\u3064\u3044\u3066\u3001\u8a73\u3057\u304f\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Android\u30a2\u30d7\u30ea\u958b\u767a\u3067\u306eKotlin\u306e\u512a\u4f4d\u6027<\/li>\n\n\n\n<li>\u30b5\u30fc\u30d0\u30fc\u30b5\u30a4\u30c9\u958b\u767a\u306b\u304a\u3051\u308b\u5177\u4f53\u7684\u306a\u5fdc\u7528\u4f8b<\/li>\n\n\n\n<li>Web\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3084\u30de\u30eb\u30c1\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u3067\u306e\u5b9f\u7e3e<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><a><\/a>Android\u30a2\u30d7\u30ea\u958b\u767a\u3067\u306eKotlin\u306e\u512a\u4f4d\u6027<\/h3>\n\n\n\n<p><strong><span class=\"swl-marker mark_yellow\">Android\u30a2\u30d7\u30ea\u958b\u767a\u306b\u304a\u3051\u308bKotlin\u306e\u512a\u4f4d\u6027\u306f\u3001Java\u3068\u6bd4\u8f03\u3057\u3066\u30b3\u30fc\u30c9\u304c\u7c21\u6f54\u3067\u53ef\u8aad\u6027\u304c\u9ad8\u304f\u3001\u958b\u767a\u52b9\u7387\u304c\u5411\u4e0a\u3067\u304d\u308b\u70b9<\/span><\/strong>\u3067\u3059\u3002Kotlin\u3067\u306f\u30dc\u30a4\u30e9\u30fc\u30d7\u30ec\u30fc\u30c8\u30b3\u30fc\u30c9\u304c\u524a\u6e1b\u3055\u308c\u3001\u540c\u3058\u6a5f\u80fd\u3092\u5b9f\u88c5\u3059\u308b\u969b\u306e\u30b3\u30fc\u30c9\u884c\u6570\u3092\u6e1b\u3089\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3055\u3089\u306bKotlin\u306fNull\u5b89\u5168\u6027\u3092\u5099\u3048\u3066\u3044\u308b\u305f\u3081\u3001NullPointerException\u306e\u767a\u751f\u3092\u4e88\u9632\u53ef\u80fd\u3067\u3059\u3002\u3053\u306e\u6a5f\u80fd\u306f\u30a2\u30d7\u30ea\u306e\u4fe1\u983c\u6027\u3068\u5b89\u5b9a\u6027\u3092\u9ad8\u3081\u3001\u4e88\u671f\u3057\u306a\u3044\u30af\u30e9\u30c3\u30b7\u30e5\u3092\u6e1b\u5c11\u3055\u305b\u307e\u3059\u3002<\/p>\n\n\n\n<p>Kotlin\u306fJava\u3068\u306e\u4e92\u63db\u6027\u304c\u9ad8\u304f\u3001\u65e2\u5b58\u306eJava\u30b3\u30fc\u30c9\u30d9\u30fc\u30b9\u306b\u5bb9\u6613\u306b\u7d71\u5408\u3067\u304d\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u65e2\u5b58\u306e\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306bKotlin\u3092\u5c0e\u5165\u3059\u308b\u969b\u306e\u969c\u58c1\u304c\u4f4e\u304f\u3001\u6bb5\u968e\u7684\u306a\u79fb\u884c\u304c\u53ef\u80fd\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u4ee5\u4e0a\u306e\u70b9\u304b\u3089Kotlin\u306f\u3001Android\u30a2\u30d7\u30ea\u958b\u767a\u306b\u304a\u3044\u3066\u30b3\u30fc\u30c9\u306e\u7c21\u6f54\u3055\u3084\u5b89\u5168\u6027\u3001\u4e92\u63db\u6027\u3001\u516c\u5f0f\u30b5\u30dd\u30fc\u30c8\u306a\u3069\u3001\u591a\u304f\u306e\u9762\u3067\u512a\u4f4d\u6027\u3092\u6301\u3064\u8a00\u8a9e\u3068\u8a00\u3048\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-wp-embed\"><div class=\"wp-block-embed__wrapper\">\nhttps:\/\/www.engineer-factory.com\/media\/skill\/448\/\n<\/div><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\"><a><\/a>\u30b5\u30fc\u30d0\u30fc\u30b5\u30a4\u30c9\u958b\u767a\u306b\u304a\u3051\u308b\u5177\u4f53\u7684\u306a\u5fdc\u7528\u4f8b<\/h3>\n\n\n\n<p>Kotlin\u306e\u30b5\u30fc\u30d0\u30fc\u30b5\u30a4\u30c9\u958b\u767a\u3067\u306f\u3001\u3055\u307e\u3056\u307e\u306a\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u304c\u5229\u7528\u3055\u308c\u307e\u3059\u3002\u306a\u304b\u3067\u3082Ktor\u306f\u975e\u540c\u671f\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3001\u8efd\u91cf\u306aWeb\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3092\u69cb\u7bc9\u3059\u308b\u306e\u306b\u9069\u3057\u3066\u3044\u308b\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u3067\u3059\u3002\u30d3\u30eb\u30c9\u30b9\u30d4\u30fc\u30c9\u304c\u901f\u304f\u30b3\u30fc\u30c9\u3082\u30b7\u30f3\u30d7\u30eb\u3067\u53ef\u8aad\u6027\u304c\u9ad8\u3044\u70b9\u304c\u5927\u304d\u306a\u9b45\u529b\u3067\u3001Null\u5b89\u5168\u306a\u8a2d\u8a08\u306b\u3088\u308a\u30a8\u30e9\u30fc\u304c\u5c11\u306a\u304f\u3001\u5b89\u5b9a\u3057\u305f\u30b7\u30b9\u30c6\u30e0\u3092\u69cb\u7bc9\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>LINE\u793e\u3084Meta\u793e\u3092\u306f\u3058\u3081\u3068\u3059\u308b\u5927\u624b\u4f01\u696d\u304cKotlin\u3092\u63a1\u7528\u3057\u3001\u3055\u307e\u3056\u307e\u306a\u30b5\u30fc\u30d0\u30fc\u30b5\u30a4\u30c9\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3092\u958b\u767a\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u3088\u3046\u306b<strong><span class=\"swl-marker mark_yellow\">Kotlin\u3092\u30b5\u30fc\u30d0\u30fc\u30b5\u30a4\u30c9\u306b\u5c0e\u5165\u3059\u308b\u3053\u3068\u3067\u3001\u30d3\u30b8\u30cd\u30b9\u30cb\u30fc\u30ba\u306b\u8fc5\u901f\u306b\u5bfe\u5fdc\u3067\u304d\u308b\u67d4\u8edf\u306a\u958b\u767a\u74b0\u5883\u304c\u5b9f\u73fe<\/span><\/strong>\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>Kotlin\u306e\u30b5\u30fc\u30d0\u30fc\u30b5\u30a4\u30c9\u958b\u767a\u306f\u3001\u52b9\u7387\u5316\u3068\u5b89\u5168\u6027\u3092\u517c\u306d\u5099\u3048\u305f\u9078\u629e\u80a2\u3068\u3057\u3066\u591a\u304f\u306e\u958b\u767a\u8005\u306b\u652f\u6301\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u8fc5\u901f\u304b\u3064\u5b89\u5b9a\u3057\u305f\u30b7\u30b9\u30c6\u30e0\u958b\u767a\u304c\u53ef\u80fd\u306b\u306a\u308a\u3001\u4f01\u696d\u306b\u3068\u3063\u3066\u3082\u591a\u304f\u306e\u5229\u70b9\u304c\u3042\u308b\u305f\u3081\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><a><\/a>Web\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3084\u30de\u30eb\u30c1\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u3067\u306e\u5b9f\u7e3e<\/h3>\n\n\n\n<p>Kotlin\u306f\u3001Web\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3084\u30de\u30eb\u30c1\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u958b\u767a\u306b\u304a\u3044\u3066\u3082\u3001\u305d\u306e\u67d4\u8edf\u6027\u3068\u52b9\u7387\u6027\u304b\u3089\u591a\u304f\u306e\u5b9f\u7e3e\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong><span class=\"swl-marker mark_yellow\">Kotlin\u306fJVM\u4e0a\u3067\u52d5\u4f5c\u3057\u3001Spring Framework\u306a\u3069\u306eJava\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u3068\u7d44\u307f\u5408\u308f\u305b\u305fWeb\u30a2\u30d7\u30ea\u958b\u767a\u306b\u3082\u6d3b\u7528\u3067\u304d\u307e\u3059\u3002<\/span><\/strong>\u65e2\u5b58\u306eJava\u30b3\u30fc\u30c9\u30d9\u30fc\u30b9\u306bKotlin\u3092\u5c0e\u5165\u3059\u308b\u3053\u3068\u3067\u3001\u30b3\u30fc\u30c9\u306e\u7c21\u6f54\u3055\u3084\u5b89\u5168\u6027\u306e\u5411\u4e0a\u304c\u671f\u5f85\u3067\u304d\u307e\u3059\u3002\u4f8b\u3048\u3070LINE\u682a\u5f0f\u4f1a\u793e\u3067\u306f\u3001\u30b5\u30fc\u30d0\u30fc\u30b5\u30a4\u30c9\u306e\u958b\u767a\u306bKotlin\u3092\u63a1\u7528\u3057\u3001\u958b\u767a\u52b9\u7387\u306e\u5411\u4e0a\u3068\u4fdd\u5b88\u6027\u306e\u6539\u5584\u3092\u5b9f\u73fe\u3057\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<p>Kotlin Multiplatform\u306f\u5358\u4e00\u306e\u30b3\u30fc\u30c9\u30d9\u30fc\u30b9\u304b\u3089iOS\u3001Android\u3001Web\u306a\u3069\u8907\u6570\u306e\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u5411\u3051\u306b\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3092\u958b\u767a\u3067\u304d\u308b\u6a5f\u80fd\u3092\u5099\u3048\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u30b3\u30fc\u30c9\u306e\u518d\u5229\u7528\u6027\u304c\u9ad8\u307e\u308a\u3001\u958b\u767a\u30b3\u30b9\u30c8\u306e\u524a\u6e1b\u3068\u30ea\u30ea\u30fc\u30b9\u30b5\u30a4\u30af\u30eb\u306e\u77ed\u7e2e\u304c\u671f\u5f85\u3067\u304d\u308b\u306e\u3067\u3059\u3002\u5b9f\u969b\u306b\u3001Kotlin Multiplatform\u3092\u6d3b\u7528\u3057\u3066\u3001\u5171\u901a\u306e\u30d3\u30b8\u30cd\u30b9\u30ed\u30b8\u30c3\u30af\u3092\u5171\u6709\u3057\u3064\u3064\u3001\u5404\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u56fa\u6709\u306eUI\u3092\u5b9f\u88c5\u3059\u308b\u3053\u3068\u3067\u3001\u52b9\u7387\u7684\u306a\u958b\u767a\u3092\u884c\u3063\u3066\u3044\u308b\u4f01\u696d\u3082\u5897\u3048\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h2 id=\"rtoc-5\"  class=\"wp-block-heading\"><a><\/a>Java\u3068\u6bd4\u8f03\u3057\u305fKotlin\u5c0e\u5165\u306e\u30e1\u30ea\u30c3\u30c8<\/h2>\n\n\n\n<p>\u3053\u3053\u3067\u306f\u3001\u4ee5\u4e0b5\u3064\u306eJava\u3068\u6bd4\u8f03\u3057\u305fKotlin\u5c0e\u5165\u306e\u30e1\u30ea\u30c3\u30c8\u3092\u8a73\u3057\u304f\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><a><\/a>\u77ed\u304f\u7c21\u6f54\u306a\u30b3\u30fc\u30c9\u306b\u3088\u308b\u751f\u7523\u6027\u5411\u4e0a<\/h3>\n\n\n\n<p>Kotlin\u306f\u3001\u7c21\u6f54\u306a\u69cb\u6587\u3092\u63d0\u4f9b\u3059\u308b\u3053\u3068\u3067\u958b\u767a\u8005\u306e\u751f\u7523\u6027\u3092\u5411\u4e0a\u3055\u305b\u307e\u3059\u3002Java\u3068\u6bd4\u8f03\u3059\u308b\u3068\u3001<strong><span class=\"swl-marker mark_yellow\">\u5197\u9577\u306a\u30b3\u30fc\u30c9\u3092\u524a\u6e1b\u3059\u308b\u305f\u3081\u306e\u6a5f\u80fd\u304c\u8c4a\u5bcc\u306b\u7528\u610f\u3055\u308c\u3066\u304a\u308a\u3001\u958b\u767a\u52b9\u7387\u3092\u5927\u5e45\u306b\u5411\u4e0a\u3055\u305b\u308b\u3053\u3068\u304c\u53ef\u80fd\u3067<\/span><\/strong>\u3059\u3002<\/p>\n\n\n\n<p>\u4f8b\u3048\u3070\u3001Kotlin\u306e\u30c7\u30fc\u30bf\u30af\u30e9\u30b9\uff08data class\uff09\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u30dc\u30a4\u30e9\u30fc\u30d7\u30ec\u30fc\u30c8\u30b3\u30fc\u30c9\u3092\u81ea\u52d5\u751f\u6210\u3067\u304d\u308b\u305f\u3081\u3001\u30b3\u30fc\u30c9\u306e\u8a18\u8ff0\u91cf\u3092\u5927\u5e45\u306b\u524a\u6e1b\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong>\u3010Java\u3067\u306e\u30c7\u30fc\u30bf\u30af\u30e9\u30b9\u306e\u8a18\u8ff0\uff08\u5197\u9577\u306a\u4f8b\uff09\u3011<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>public class User {\n    private String name;\n    private int age;\n\n    public User(String name, int age) {\n        this.name = name;\n        this.age = age;\n    }\n\n    public String getName() { return name; }\n    public int getAge() { return age; }\n\n    @Override\n    public String toString() {\n        return \"User{name='\" + name + \"', age=\" + age + \"}\";\n    }\n}<\/code><\/pre>\n\n\n\n<p><strong>\u3010Kotlin\u3067\u306e\u30c7\u30fc\u30bf\u30af\u30e9\u30b9\u306e\u8a18\u8ff0\uff08\u7c21\u6f54\u306a\u4f8b\uff09\uff09\u3011<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>data class User(val name: String, val age: Int)<\/code><\/pre>\n\n\n\n<p>\u3053\u306e\u3088\u3046\u306b\u3001<strong><span class=\"swl-marker mark_yellow\">Kotlin\u3067\u306f1\u884c\u3067Java\u306e\u5197\u9577\u306a\u30af\u30e9\u30b9\u5b9a\u7fa9\u3092\u7f6e\u304d\u63db\u3048\u3089\u308c\u308b<\/span><\/strong>\u305f\u3081\u3001\u30b3\u30fc\u30c9\u306e\u53ef\u8aad\u6027\u304c\u5411\u4e0a\u3057\u3001\u958b\u767a\u30b9\u30d4\u30fc\u30c9\u304c\u52a0\u901f\u3057\u307e\u3059\u3002\u3055\u3089\u306b\u3001\u62e1\u5f35\u95a2\u6570\u3084\u30e9\u30e0\u30c0\u5f0f\u3092\u6d3b\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u3088\u308a\u76f4\u611f\u7684\u3067\u30b7\u30f3\u30d7\u30eb\u306a\u30b3\u30fc\u30c9\u3092\u66f8\u304f\u3053\u3068\u304c\u53ef\u80fd\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3010<strong>Kotlin\u306e\u62e1\u5f35\u95a2\u6570\u306e\u4f8b<\/strong>\u3011<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>fun String.isEmailValid(): Boolean {\n    return this.contains(\"@\") &amp;&amp; this.contains(\".\")\n}\n\nval email = \"test@example.com\"\nprintln(email.isEmailValid()) \/\/ true<\/code><\/pre>\n\n\n\n<p>\u3053\u306e\u3088\u3046\u306b\u3001\u65e2\u5b58\u306e\u30af\u30e9\u30b9\u3092\u62e1\u5f35\u3057\u3066\u65b0\u3057\u3044\u30e1\u30bd\u30c3\u30c9\u3092\u8ffd\u52a0\u3067\u304d\u308b\u305f\u3081\u3001\u30b3\u30fc\u30c9\u306e\u518d\u5229\u7528\u6027\u3092\u9ad8\u3081\u3001\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u6027\u3082\u5411\u4e0a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><a><\/a>Java\u3068\u306e\u76f8\u4e92\u904b\u7528\u6027\u3067\u6bb5\u968e\u7684\u79fb\u884c\u304c\u53ef\u80fd<\/h3>\n\n\n\n<p>Kotlin\u306e\u5f37\u307f\u306e\u3072\u3068\u3064\u304c\u3001Java\u3068\u306e\u9ad8\u3044\u76f8\u4e92\u904b\u7528\u6027\u3067\u3059\u3002Kotlin\u306fJava Virtual Machine\uff08JVM\uff09\u4e0a\u3067\u52d5\u4f5c\u3059\u308b\u305f\u3081\u3001\u65e2\u5b58\u306eJava\u30b3\u30fc\u30c9\u3068\u30b9\u30e0\u30fc\u30ba\u306b\u7d71\u5408\u3067\u304d\u307e\u3059\u3002\u3053\u306e\u7279\u6027\u306b\u3088\u308a\u3001\u65e2\u5b58\u306eJava\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306bKotlin\u3092\u5c0e\u5165\u3059\u308b\u969b\u3001\u3059\u3079\u3066\u306e\u30b3\u30fc\u30c9\u3092\u4e00\u5ea6\u306b\u66f8\u304d\u63db\u3048\u308b\u5fc5\u8981\u304c\u306a\u304f\u306a\u308a\u307e\u3059\u3002\u6bb5\u968e\u7684\u306a\u79fb\u884c\u304c\u53ef\u80fd\u3067\u3042\u308a\u3001\u3053\u308c\u306b\u3088\u308a\u958b\u767a\u306e\u30ea\u30b9\u30af\u3092\u6700\u5c0f\u9650\u306b\u6291\u3048\u3089\u308c\u308b\u306e\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u4f8b\u3048\u3070\u3001\u65b0\u3057\u3044\u6a5f\u80fd\u3092\u8ffd\u52a0\u3059\u308b\u969b\u306bKotlin\u3067\u5b9f\u88c5\u3057\u3001\u65e2\u5b58\u306eJava\u30b3\u30fc\u30c9\u3068\u5171\u5b58\u3055\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3053\u306e\u30a2\u30d7\u30ed\u30fc\u30c1\u306f\u3001Kotlin\u306e\u5b66\u7fd2\u30b3\u30b9\u30c8\u3092\u5206\u6563\u3057\u3064\u3064\u3001\u65e2\u5b58\u306eJava\u30b3\u30fc\u30c9\u306e\u5b89\u5b9a\u6027\u3092\u4fdd\u3064\u4e0a\u3067\u3082\u6709\u52b9\u3067\u3059\u3002\u307e\u305f\u3001Java\u3068Kotlin\u306f\u76f8\u4e92\u306b\u30b3\u30fc\u30c9\u3092\u547c\u3073\u51fa\u305b\u308b\u305f\u3081\u3001Java\u3067\u4f5c\u6210\u3055\u308c\u305f\u30e9\u30a4\u30d6\u30e9\u30ea\u3084\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u3092\u305d\u306e\u307e\u307e\u6d3b\u7528\u3067\u304d\u307e\u3059\u3002<br><br>\u3053\u306e\u3088\u3046\u306b\u3001<strong><span class=\"swl-marker mark_yellow\">Kotlin\u306fJava\u8cc7\u7523\u3092\u6d3b\u304b\u3057\u3064\u3064\u3001\u65b0\u3057\u3044\u8a00\u8a9e\u306e\u5229\u4fbf\u6027\u3092\u6bb5\u968e\u7684\u306b\u53d6\u308a\u5165\u308c\u308b\u3053\u3068\u304c\u53ef\u80fd<\/span><\/strong>\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><a><\/a>Google\u516c\u5f0f\u30b5\u30dd\u30fc\u30c8\u3067\u306e\u5b89\u5fc3\u611f<\/h3>\n\n\n\n<p>Kotlin\u304cGoogle\u306e\u516c\u5f0f\u30b5\u30dd\u30fc\u30c8\u3092\u53d7\u3051\u3066\u3044\u308b\u3053\u3068\u306f\u3001\u958b\u767a\u8005\u306b\u3068\u3063\u3066\u5927\u304d\u306a\u5b89\u5fc3\u6750\u6599\u3068\u306a\u308a\u307e\u3059\u30022017\u5e74\u306bGoogle\u306f\u3001Kotlin\u3092Android\u958b\u767a\u306e\u516c\u5f0f\u8a00\u8a9e\u3068\u3057\u3066\u63a1\u7528\u3057\u307e\u3057\u305f\u3002\u3053\u306e\u6c7a\u5b9a\u306b\u3088\u308a\u3001<strong><span class=\"swl-marker mark_yellow\">Kotlin\u306fGoogle\u306e\u30a8\u30b3\u30b7\u30b9\u30c6\u30e0\u5185\u3067\u7d99\u7d9a\u7684\u306a\u30b5\u30dd\u30fc\u30c8\u3092\u53d7\u3051\u3089\u308c\u308b\u3053\u3068\u304c\u4fdd\u8a3c<\/span><\/strong>\u3055\u308c\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<p>\u5177\u4f53\u7684\u306a\u30b5\u30dd\u30fc\u30c8\u4f8b\u306e\u3072\u3068\u3064\u304c\u3001Android Studio\u306bKotlin\u306e\u30b3\u30fc\u30c9\u88dc\u5b8c\u6a5f\u80fd\u3084\u30c7\u30d0\u30c3\u30b0\u30c4\u30fc\u30eb\u304c\u6a19\u6e96\u642d\u8f09\u3055\u308c\u3001\u52b9\u7387\u7684\u306a\u958b\u767a\u304c\u5b9f\u73fe\u3057\u305f\u70b9\u3067\u3059\u3002\u307e\u305f\u516c\u5f0f\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u3084\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3082\u5145\u5b9f\u3057\u3066\u3044\u308b\u305f\u3081\u3001\u958b\u767a\u8005\u306f\u4fe1\u983c\u6027\u306e\u9ad8\u3044\u60c5\u5831\u6e90\u3092\u3082\u3068\u306b\u4f5c\u696d\u3092\u9032\u3081\u3089\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3053\u306e\u3088\u3046\u306a\u516c\u5f0f\u30b5\u30dd\u30fc\u30c8\u306e\u5b58\u5728\u306f\u3001\u9577\u671f\u7684\u306a\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306b\u304a\u3044\u3066\u7279\u306b\u91cd\u8981\u3067\u3059\u3002Kotlin\u304cGoogle\u306e\u652f\u63f4\u3092\u53d7\u3051\u7d9a\u3051\u308b\u9650\u308a\u3001\u958b\u767a\u74b0\u5883\u306e\u5b89\u5b9a\u6027\u3084\u5c06\u6765\u6027\u304c\u78ba\u4fdd\u3055\u308c\u308b\u305f\u3081\u3001\u65b0\u3057\u3044\u8a00\u8a9e\u306e\u5c0e\u5165\u306b\u3088\u308b\u30ea\u30b9\u30af\u3092\u8efd\u6e1b\u3067\u304d\u308b\u3067\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><a><\/a>\u5b89\u5168\u6027\u3092\u9ad8\u3081\u308bNull\u5b89\u5168\u8a2d\u8a08<\/h3>\n\n\n\n<p>otlin\u306fNull\u5b89\u5168\u6027\u3092\u91cd\u8996\u3057\u305f\u8a2d\u8a08\u306b\u3088\u308a\u3001\u958b\u767a\u8005\u304c\u76f4\u9762\u3057\u304c\u3061\u306a\u30a8\u30e9\u30fc\u3092\u672a\u7136\u306b\u9632\u304e\u307e\u3059\u3002<\/p>\n\n\n\n<p>Java\u3067\u306f\u3001Null\u53c2\u7167\u306b\u3088\u308b\u300cNullPointerException\u300d\uff08NPE\uff09\u304c\u983b\u767a\u3057\u3001\u30b7\u30b9\u30c6\u30e0\u969c\u5bb3\u306e\u539f\u56e0\u3068\u306a\u308b\u3053\u3068\u304c\u591a\u3005\u3042\u308a\u307e\u3059\u3002\u4e00\u65b9\u3067Kotlin\u3067\u306f\u3001\u5909\u6570\u306bNull\u3092\u8a31\u5bb9\u3059\u308b\u304b\u3069\u3046\u304b\u3092\u660e\u793a\u7684\u306b\u6307\u5b9a\u3059\u308b\u3053\u3068\u304c\u53ef\u80fd\u3067\u3059\u3002\u5177\u4f53\u7684\u306b\u306f\u3001Null\u3092\u8a31\u5bb9\u3059\u308b\u5834\u5408\u306f\u578b\u540d\u306e\u5f8c\u306b\u300c?\u300d\u3092\u4ed8\u3051\u3001\u8a31\u5bb9\u3057\u306a\u3044\u5834\u5408\u306f\u4ed8\u3051\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<p><strong>\u3010\u4f8b\u3011<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>var nullableString: String? = null \/\/ Null\u8a31\u5bb9\nvar nonNullableString: String = \"Hello\" \/\/ Null\u975e\u8a31\u5bb9<\/code><\/pre>\n\n\n\n<p>\u3053\u306e\u8a2d\u8a08\u306b\u3088\u308a\u3001\u30b3\u30f3\u30d1\u30a4\u30eb\u6642\u306bNull\u53c2\u7167\u306e\u53ef\u80fd\u6027\u3092\u691c\u51fa\u3057\u3001\u30a8\u30e9\u30fc\u3092\u672a\u7136\u306b\u9632\u6b62\u3067\u304d\u307e\u3059\u3002\u307e\u305f\u3001\u30bb\u30fc\u30d5\u30b3\u30fc\u30eb\u6f14\u7b97\u5b50\uff08?.\uff09 \u3084 \u30a8\u30eb\u30d3\u30b9\u6f14\u7b97\u5b50\uff08?:\uff09 \u3092\u7528\u3044\u308b\u3053\u3068\u3067\u3001\u7c21\u6f54\u306bNull\u30c1\u30a7\u30c3\u30af\u3092\u884c\u3046\u3053\u3068\u3082\u53ef\u80fd\u3067\u3059\u3002<\/p>\n\n\n\n<p><strong>\u3010\u4f8b\u3011<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>val length = nullableString?.length ?: 0 \/\/ Null\u306a\u30890\u3092\u8fd4\u3059<\/code><\/pre>\n\n\n\n<p><br>\u3053\u306e\u3088\u3046\u306b\u3001Kotlin\u306fJava\u3088\u308a\u3082\u5b89\u5168\u6027\u304c\u9ad8\u304f\u3001\u5b89\u5b9a\u3057\u305f\u30b7\u30b9\u30c6\u30e0\u958b\u767a\u3092\u5b9f\u73fe\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><a><\/a>\u5e45\u5e83\u3044\u7528\u9014\u3068\u5c06\u6765\u6027\u306e\u9ad8\u3055<\/h3>\n\n\n\n<p><strong><span class=\"swl-marker mark_yellow\">Kotlin\u306fAndroid\u30a2\u30d7\u30ea\u958b\u767a\u306e\u307f\u306a\u3089\u305a\u3001\u30b5\u30fc\u30d0\u30fc\u30b5\u30a4\u30c9\u958b\u767a\u3084Web\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u958b\u767a\u306a\u3069\u3001\u591a\u5c90\u306b\u308f\u305f\u308b\u5206\u91ce\u3067\u6d3b\u7528\u3055\u308c\u3066\u3044\u307e\u3059<\/span><\/strong>\u3002\u7279\u306b\u30b5\u30fc\u30d0\u30fc\u30b5\u30a4\u30c9\u958b\u767a\u306b\u304a\u3044\u3066\u306f\u3001LINE\u682a\u5f0f\u4f1a\u793e\u3084\u30e4\u30d5\u30fc\u682a\u5f0f\u4f1a\u793e\u306a\u3069\u3001\u591a\u304f\u306e\u56fd\u5185\u4f01\u696d\u306b\u63a1\u7528\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u307e\u305fKotlin\u306fJava\u3068\u306e\u9ad8\u3044\u4e92\u63db\u6027\u3092\u6301\u3064\u305f\u3081\u3001\u65e2\u5b58\u306eJava\u8cc7\u7523\u3092\u6d3b\u7528\u3057\u3064\u3064\u3001\u3088\u308a\u7c21\u6f54\u3067\u5b89\u5168\u306a\u30b3\u30fc\u30c9\u3092\u66f8\u304f\u3053\u3068\u304c\u53ef\u80fd\u3067\u3059\u3002\u3055\u3089\u306bGoogle\u304cAndroid\u306e\u516c\u5f0f\u958b\u767a\u8a00\u8a9e\u3068\u3057\u3066Kotlin\u3092\u63a1\u7528\u3057\u305f\u3053\u3068\u3067\u3001\u4eca\u5f8c\u3082\u9700\u8981\u304c\u9ad8\u307e\u308b\u3068\u4e88\u60f3\u3055\u308c\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u70b9\u304b\u3089\u3001Kotlin\u306f\u5c06\u6765\u6027\u306e\u9ad8\u3044\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u8a00\u8a9e\u3068\u3044\u3048\u307e\u3059\u3002<\/p>\n\n\n\n<h2 id=\"rtoc-6\"  class=\"wp-block-heading\"><a><\/a>Kotlin\u5c0e\u5165\u306e\u30c7\u30e1\u30ea\u30c3\u30c8<\/h2>\n\n\n\n<p>Kotlin\u306b\u306f\u591a\u304f\u306e\u30e1\u30ea\u30c3\u30c8\u304c\u3042\u308a\u307e\u3059\u304c\u3001\u5c0e\u5165\u306b\u969b\u3057\u3066\u3044\u304f\u3064\u304b\u306e\u8ab2\u984c\u3082\u5b58\u5728\u3057\u307e\u3059\u3002\u3053\u3053\u3067\u306f\u3001Kotlin\u5c0e\u5165\u6642\u306b\u8003\u616e\u3059\u3079\u304d4\u3064\u306e\u30c7\u30e1\u30ea\u30c3\u30c8\u3068\u305d\u306e\u5bfe\u7b56\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u65e5\u672c\u8a9e\u60c5\u5831\u306e\u4e0d\u8db3\u3068\u5bfe\u7b56<\/li>\n\n\n\n<li>Kotlin\u30a8\u30f3\u30b8\u30cb\u30a2\u306e\u7fd2\u719f\u5ea6\u306e\u8ab2\u984c<\/li>\n\n\n\n<li>Android\u4ee5\u5916\u306e\u4e8b\u4f8b\u304c\u9650\u3089\u308c\u308b\u73fe\u72b6<\/li>\n\n\n\n<li>\u30d9\u30f3\u30c0\u30fc\u30ed\u30c3\u30af\u30a4\u30f3\u306e\u30ea\u30b9\u30af\u3068\u305d\u306e\u8efd\u6e1b\u7b56<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><a><\/a>\u65e5\u672c\u8a9e\u60c5\u5831\u306e\u4e0d\u8db3\u3068\u5bfe\u7b56<\/h3>\n\n\n\n<p><strong><span class=\"swl-marker mark_yellow\">Kotlin\u306f2011\u5e74\u306b\u767b\u5834\u3057\u305f\u6bd4\u8f03\u7684\u65b0\u3057\u3044\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u8a00\u8a9e\u3067\u3042\u308a\u3001Java\u3068\u6bd4\u3079\u308b\u3068\u65e5\u672c\u8a9e\u306e\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u3084\u53c2\u8003\u8cc7\u6599\u304c\u5c11\u306a\u3044<\/span><\/strong>\u306e\u304c\u73fe\u72b6\u3067\u3059\u3002\u7279\u306b\u65e5\u672c\u8a9e\u3092\u4e3b\u306b\u4f7f\u7528\u3059\u308b\u958b\u767a\u8005\u306b\u3068\u3063\u3066\u306f\u3001\u5b66\u7fd2\u3084\u554f\u984c\u89e3\u6c7a\u306e\u969b\u306b\u969c\u58c1\u3068\u306a\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3057\u304b\u3057\u3001Google\u306fAndroid\u30a2\u30d7\u30ea\u958b\u767a\u8005\u5411\u3051\u306bKotlin\u306e\u53c2\u8003\u8cc7\u6599\u3084\u30aa\u30f3\u30e9\u30a4\u30f3\u5b66\u7fd2\u30b3\u30fc\u30b9\u3092\u65e5\u672c\u8a9e\u3067\u63d0\u4f9b\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u516c\u5f0f\u30ea\u30bd\u30fc\u30b9\u3092\u6d3b\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u5b66\u7fd2\u306e\u52b9\u7387\u5316\u3084\u958b\u767a\u4e2d\u306e\u554f\u984c\u89e3\u6c7a\u304c\u671f\u5f85\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u307e\u305fKotlin\u306fJava\u3092\u6539\u826f\u3057\u305f\u8a00\u8a9e\u3067\u3042\u308b\u305f\u3081\u3001\u65e2\u306bJava\u306e\u77e5\u8b58\u304c\u3042\u308b\u958b\u767a\u8005\u306f\u3001\u305d\u306e\u77e5\u8b58\u3092\u6d3b\u7528\u3057\u3066Kotlin\u306e\u7406\u89e3\u3092\u6df1\u3081\u308b\u3053\u3068\u304c\u53ef\u80fd\u3067\u3059\u3002\u3055\u3089\u306b\u82f1\u8a9e\u306e\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u3084\u30b3\u30df\u30e5\u30cb\u30c6\u30a3\u3082\u5145\u5b9f\u3057\u3066\u3044\u308b\u305f\u3081\u3001\u7ffb\u8a33\u30c4\u30fc\u30eb\u3092\u6d3b\u7528\u3057\u3066\u60c5\u5831\u3092\u53ce\u96c6\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u5bfe\u7b56\u306b\u3088\u308a\u65e5\u672c\u8a9e\u60c5\u5831\u306e\u4e0d\u8db3\u306b\u3088\u308b\u30c7\u30e1\u30ea\u30c3\u30c8\u3092\u6700\u5c0f\u9650\u306b\u6291\u3048\u3001Kotlin\u306e\u5b66\u7fd2\u3084\u958b\u767a\u3092\u5186\u6ed1\u306b\u9032\u3081\u3089\u308c\u308b\u3067\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><a><\/a>Kotlin\u30a8\u30f3\u30b8\u30cb\u30a2\u306e\u7fd2\u719f\u5ea6\u306e\u8ab2\u984c<\/h3>\n\n\n\n<p>Kotlin\u306f\u591a\u304f\u306e\u5229\u70b9\u3092\u6301\u3064\u4e00\u65b9\u3067\u3001\u5c0e\u5165\u306b\u969b\u3057\u3066\u306f\u3044\u304f\u3064\u304b\u306e\u8ab2\u984c\u304c\u6319\u3052\u3089\u308c\u307e\u3059\u3002\u305d\u306e\u4e2d\u3067\u3082\u7279\u306b\u91cd\u8981\u306a\u306e\u304c\u3001Kotlin\u30a8\u30f3\u30b8\u30cb\u30a2\u306e\u7fd2\u719f\u5ea6\u306b\u95a2\u3059\u308b\u8ab2\u984c\u3067\u3059\u3002<\/p>\n\n\n\n<p>Kotlin\u306f2017\u5e74\u306bGoogle\u304c\u516c\u5f0f\u8a00\u8a9e\u3068\u3057\u3066\u63a1\u7528\u3057\u3066\u4ee5\u6765\u3001\u4eba\u6c17\u3092\u96c6\u3081\u3066\u3044\u307e\u3059\u304c\u3001\u65e5\u672c\u56fd\u5185\u306b\u304a\u3044\u3066\u306fKotlin\u3092\u9ad8\u3044\u30ec\u30d9\u30eb\u3067\u6271\u3048\u308b\u30a8\u30f3\u30b8\u30cb\u30a2\u306e\u6570\u304c\u5341\u5206\u3068\u306f\u3044\u3048\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<p>\u3053\u306e\u80cc\u666f\u306b\u306f\u3001<strong><span class=\"swl-marker mark_yellow\">Java\u304c\u9577\u5e74\u306b\u308f\u305f\u308a\u4e3b\u6d41\u3067\u3042\u3063\u305f\u3053\u3068\u3084\u3001Kotlin\u304c\u6bd4\u8f03\u7684\u65b0\u3057\u3044\u8a00\u8a9e\u3067\u3042\u308b\u3053\u3068\u304c\u5f71\u97ff<\/span><\/strong>\u3057\u3066\u3044\u307e\u3059\u3002\u305d\u306e\u7d50\u679c\u3001Kotlin\u3092\u5c0e\u5165\u3059\u308b\u969b\u306b\u5341\u5206\u306a\u6280\u8853\u529b\u3092\u6301\u3064\u30a8\u30f3\u30b8\u30cb\u30a2\u3092\u78ba\u4fdd\u3067\u304d\u306a\u3044\u30b1\u30fc\u30b9\u304c\u51fa\u3066\u3044\u308b\u306e\u3067\u3059\u3002<\/p>\n\n\n\n<p>Kotlin\u306e\u5c0e\u5165\u3092\u6210\u529f\u3055\u305b\u308b\u306b\u306f\u3001\u30b9\u30ad\u30eb\u4e0d\u8db3\u306b\u3088\u308b\u969c\u58c1\u3092\u8a8d\u8b58\u3057\u3001\u8a08\u753b\u7684\u306b\u5bfe\u7b56\u3092\u9032\u3081\u308b\u3053\u3068\u304c\u4e0d\u53ef\u6b20\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><a><\/a>Android\u4ee5\u5916\u306e\u4e8b\u4f8b\u304c\u9650\u3089\u308c\u308b\u73fe\u72b6<\/h3>\n\n\n\n<p>Kotlin\u306f\u3001Android\u30a2\u30d7\u30ea\u958b\u767a\u3092\u76ee\u7684\u3068\u3057\u3066\u767b\u5834\u3057\u305f\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u8a00\u8a9e\u3067\u3059\u3002\u305d\u306e\u305f\u3081\u3001Android\u4ee5\u5916\u306e\u5206\u91ce\u3067\u306e\u6d3b\u7528\u4e8b\u4f8b\u304c\u5c11\u306a\u3044\u73fe\u72b6\u304c\u3042\u308a\u307e\u3059\u3002\u7279\u306b\u3001\u65e5\u672c\u56fd\u5185\u3067\u306fAndroid\u4ee5\u5916\u306e\u5206\u91ce\u3067Kotlin\u3092\u63a1\u7528\u3057\u3066\u3044\u308b\u4f01\u696d\u304c\u307e\u3060\u591a\u304f\u306a\u3044\u306e\u304c\u73fe\u72b6\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u305d\u306e\u305f\u3081Kotlin\u306e\u5c0e\u5165\u3092\u691c\u8a0e\u3059\u308b\u969b\u306f\u3001\u73fe\u5728\u306e\u6d3b\u7528\u4e8b\u4f8b\u306e\u5c11\u306a\u3055\u3092\u8003\u616e\u3057\u3064\u3064\u3001\u5c06\u6765\u7684\u306a\u53ef\u80fd\u6027\u3082\u8996\u91ce\u306b\u5165\u308c\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><a><\/a>\u30d9\u30f3\u30c0\u30fc\u30ed\u30c3\u30af\u30a4\u30f3\u306e\u30ea\u30b9\u30af\u3068\u305d\u306e\u8efd\u6e1b\u7b56<\/h3>\n\n\n\n<p>Kotlin\u306fJetBrains\u793e\u304c\u958b\u767a\u3057\u305f\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u8a00\u8a9e\u3067\u3059\u3002\u305d\u306e\u305f\u3081<strong><span class=\"swl-marker mark_yellow\">\u7279\u5b9a\u306e\u30d9\u30f3\u30c0\u30fc\u3084\u6280\u8853\u306b\u4f9d\u5b58\u3059\u308b\u300c\u30d9\u30f3\u30c0\u30fc\u30ed\u30c3\u30af\u30a4\u30f3\u300d\u306e\u30ea\u30b9\u30af\u304c\u5b58\u5728<\/span><\/strong>\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3053\u308c\u306f\u7279\u5b9a\u306e\u6280\u8853\u306b\u4f9d\u5b58\u3059\u308b\u3053\u3068\u3067\u3001\u4ed6\u306e\u6280\u8853\u3084\u30d9\u30f3\u30c0\u30fc\u3078\u306e\u79fb\u884c\u304c\u56f0\u96e3\u306b\u306a\u308b\u72b6\u6cc1\u3092\u6307\u3057\u307e\u3059\u3002Kotlin\u306e\u5834\u5408\u3001JetBrains\u793e\u306e\u958b\u767a\u74b0\u5883\u3084\u30c4\u30fc\u30eb\u3078\u306e\u4f9d\u5b58\u306b\u3088\u308a\u3001\u5c06\u6765\u7684\u306a\u6280\u8853\u9078\u629e\u306e\u81ea\u7531\u5ea6\u304c\u5236\u9650\u3055\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u306e\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3053\u306e\u30ea\u30b9\u30af\u3092\u8efd\u6e1b\u3059\u308b\u306b\u306f\u3001\u4ee5\u4e0b\u306e\u5bfe\u7b56\u304c\u8003\u3048\u3089\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u307e\u305aKotlin\u3068\u76f8\u4e92\u904b\u7528\u6027\u306e\u9ad8\u3044Java\u306e\u4f75\u7528\u306b\u3088\u308a\u3001\u7279\u5b9a\u306e\u6280\u8853\u3078\u306e\u4f9d\u5b58\u5ea6\u3092\u4e0b\u3052\u308b\u3053\u3068\u304c\u53ef\u80fd\u3067\u3059\u3002\u307e\u305f\u3001\u30aa\u30fc\u30d7\u30f3\u30bd\u30fc\u30b9\u306e\u30c4\u30fc\u30eb\u3084\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u3092\u6d3b\u7528\u3057\u3001\u7279\u5b9a\u306e\u30d9\u30f3\u30c0\u30fc\u306b\u4f9d\u5b58\u3057\u306a\u3044\u958b\u767a\u74b0\u5883\u3092\u6574\u3048\u308b\u3053\u3068\u3082\u6709\u52b9\u3067\u3059\u3002\u3055\u3089\u306b\u8907\u6570\u306e\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u8a00\u8a9e\u3084\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u306b\u5bfe\u5fdc\u3067\u304d\u308b\u30a8\u30f3\u30b8\u30cb\u30a2\u3092\u80b2\u6210\u3057\u3001\u6280\u8853\u7684\u306a\u67d4\u8edf\u6027\u3092\u6301\u305f\u305b\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u5bfe\u7b56\u3092\u8b1b\u3058\u308b\u3053\u3068\u3067\u3001Kotlin\u5c0e\u5165\u6642\u306e\u30d9\u30f3\u30c0\u30fc\u30ed\u30c3\u30af\u30a4\u30f3\u306e\u30ea\u30b9\u30af\u3092\u6700\u5c0f\u9650\u306b\u6291\u3048\u3001\u67d4\u8edf\u3067\u6301\u7d9a\u53ef\u80fd\u306a\u958b\u767a\u4f53\u5236\u3092\u69cb\u7bc9\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 id=\"rtoc-7\"  class=\"wp-block-heading\"><a><\/a>Kotlin\u3092\u5b66\u3076\u65b9\u6cd5<\/h2>\n\n\n\n<p>\u3053\u3053\u304b\u3089\u306f\u4ee5\u4e0b3\u3064\u306eKotlin\u3092\u5b66\u3076\u65b9\u6cd5\u306b\u3064\u3044\u3066\u3001\u8a73\u3057\u304f\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u521d\u5fc3\u8005\u5411\u3051\u306e\u57fa\u790e\u5b66\u7fd2\u30b9\u30c6\u30c3\u30d7<\/li>\n\n\n\n<li>\u4e2d\u7d1a\u8005\u5411\u3051\u306e\u5b9f\u52d9\u30b9\u30ad\u30eb\u7fd2\u5f97\u30ea\u30bd\u30fc\u30b9<\/li>\n\n\n\n<li>\u5b9f\u52d9\u306b\u76f4\u7d50\u3057\u305f\u7df4\u7fd2\u6cd5\u3068\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u4f8b<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><a><\/a>\u521d\u5fc3\u8005\u5411\u3051\u306e\u57fa\u790e\u5b66\u7fd2\u30b9\u30c6\u30c3\u30d7<\/h3>\n\n\n\n<p>\u521d\u5fc3\u8005\u304cKotlin\u3092\u5b66\u3076\u969b\u306f\u3001<strong><span class=\"swl-marker mark_yellow\">\u516c\u5f0f\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u3092\u6d3b\u7528\u3057\u3066\u8a00\u8a9e\u306e\u57fa\u672c\u69cb\u6587\u3084\u7279\u5fb4\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u304b\u3089\u59cb\u3081\u307e\u3057\u3087\u3046<\/span><\/strong>\u3002\u516c\u5f0f\u30b5\u30a4\u30c8\u3067\u306f\u3001Kotlin\u306e\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9\u3084\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u304c\u63d0\u4f9b\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u307e\u305f\u30aa\u30f3\u30e9\u30a4\u30f3\u5b66\u7fd2\u30b5\u30a4\u30c8\u3092\u5229\u7528\u3057\u3066\u3001\u5b9f\u969b\u306b\u624b\u3092\u52d5\u304b\u3057\u306a\u304c\u3089\u5b66\u7fd2\u3092\u9032\u3081\u308b\u65b9\u6cd5\u3082\u6709\u52b9\u3067\u3059\u3002\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u5b66\u7fd2\u30b5\u30a4\u30c8\u3067\u306f\u3001Kotlin\u306e\u57fa\u672c\u69cb\u9020\u3084\u5165\u529b\u3068\u51fa\u529b\u306e\u65b9\u6cd5\u3001\u30b3\u30e1\u30f3\u30c8\u306e\u66f8\u304d\u65b9\u306a\u3069\u3092\u5b66\u3079\u307e\u3059\u3002<\/p>\n\n\n\n<p>Android\u30a2\u30d7\u30ea\u958b\u767a\u306b\u8208\u5473\u304c\u3042\u308b\u5834\u5408\u306f\u3001Google\u304c\u63d0\u4f9b\u3059\u308b\u300cAndroid Kotlin \u306e\u57fa\u790e\u300d\u30b3\u30fc\u30b9\u3092\u53d7\u8b1b\u3059\u308b\u306e\u3082\u304a\u3059\u3059\u3081\u3067\u3059\u3002\u3053\u306e\u30b3\u30fc\u30b9\u3067\u306fKotlin\u3092\u4f7f\u7528\u3057\u305fAndroid\u30a2\u30d7\u30ea\u306e\u4f5c\u6210\u65b9\u6cd5\u3084\u30ec\u30a4\u30a2\u30a6\u30c8\u306e\u4f5c\u6210\u3001\u30e6\u30fc\u30b6\u30fc\u5165\u529b\u306e\u53d6\u5f97\u306a\u3069\u3001\u5b9f\u8df5\u7684\u306a\u5185\u5bb9\u3092\u5b66\u3079\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u30ea\u30bd\u30fc\u30b9\u3092\u6d3b\u7528\u3057\u3001\u57fa\u790e\u304b\u3089\u5fdc\u7528\u307e\u3067\u6bb5\u968e\u7684\u306b\u5b66\u7fd2\u3092\u9032\u3081\u308b\u3053\u3068\u3067\u3001Kotlin\u306e\u30b9\u30ad\u30eb\u3092\u52b9\u679c\u7684\u306b\u7fd2\u5f97\u53ef\u80fd\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><a><\/a>\u4e2d\u7d1a\u8005\u5411\u3051\u306e\u5b9f\u52d9\u30b9\u30ad\u30eb\u7fd2\u5f97\u30ea\u30bd\u30fc\u30b9<\/h3>\n\n\n\n<p>Kotlin\u306e\u57fa\u790e\u3092\u7fd2\u5f97\u3057\u305f\u65b9\u304c\u5b9f\u52d9\u3067\u6d3b\u7528\u3067\u304d\u308b\u30b9\u30ad\u30eb\u3092\u78e8\u304f\u305f\u3081\u306b\u306f\u3001\u5b9f\u8df5\u7684\u306a\u5b66\u7fd2\u30ea\u30bd\u30fc\u30b9\u306e\u6d3b\u7528\u304c\u52b9\u679c\u7684\u3067\u3059\u3002\u5177\u4f53\u7684\u306b\u306f\u3001Kotlin\u306e\u516c\u5f0f\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u3084\u30aa\u30f3\u30e9\u30a4\u30f3\u30b3\u30fc\u30b9\u3001\u5c02\u9580\u66f8\u7c4d\u306e\u6d3b\u7528\u304c\u6319\u3052\u3089\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p>Kotlin\u306e\u516c\u5f0f\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u306f\u3001\u8a00\u8a9e\u306e\u6df1\u3044\u7406\u89e3\u3068\u6700\u65b0\u60c5\u5831\u306e\u5165\u624b\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002Kotlin\u306e\u9ad8\u5ea6\u306a\u6a5f\u80fd\u3084\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u89e3\u8aac\u3055\u308c\u3066\u3044\u308b\u305f\u3081\u3001\u3088\u308a\u6df1\u304f\u5b66\u7fd2\u3067\u304d\u308b\u3067\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<p>\u30aa\u30f3\u30e9\u30a4\u30f3\u5b66\u7fd2\u30ea\u30bd\u30fc\u30b9\u4f8b\u306e\u3072\u3068\u3064\u3001\u30aa\u30f3\u30e9\u30a4\u30f3\u5b66\u7fd2\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u306eUdemy\u3067\u306f\u3055\u307e\u3056\u307e\u306aKotlin\u306e\u4e2d\u7d1a\u8005\u5411\u3051\u30b3\u30fc\u30b9\u304c\u63d0\u4f9b\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u4f8b\u3048\u3070\u300cKotlin\u5165\u9580\uff1aJava\u958b\u767a\u8005\u306e\u305f\u3081\u306eKotlin\u300d\u306a\u3069\u306e\u30b3\u30fc\u30b9\u3067\u306f\u3001\u5b9f\u52d9\u3067\u5f79\u7acb\u3064\u30b9\u30ad\u30eb\u3092\u4f53\u7cfb\u7684\u306b\u5b66\u3076\u3053\u3068\u304c\u53ef\u80fd\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u30ea\u30bd\u30fc\u30b9\u3092\u6d3b\u7528\u3057\u3001\u7d99\u7d9a\u7684\u306b\u5b66\u7fd2\u3092\u9032\u3081\u308b\u3053\u3068\u3067\u3001Kotlin\u306e\u5b9f\u52d9\u30b9\u30ad\u30eb\u3092\u52b9\u679c\u7684\u306b\u7fd2\u5f97\u3067\u304d\u308b\u3067\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><a><\/a>\u5b9f\u52d9\u306b\u76f4\u7d50\u3057\u305f\u7df4\u7fd2\u6cd5\u3068\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u4f8b<\/h3>\n\n\n\n<p>Kotlin\u306e\u30b9\u30ad\u30eb\u3092\u5b9f\u52d9\u30ec\u30d9\u30eb\u3067\u5411\u4e0a\u3055\u305b\u308b\u306b\u306f\u3001\u5b9f\u8df5\u7684\u306a\u7df4\u7fd2\u3068\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3078\u306e\u53d6\u308a\u7d44\u307f\u304c\u52b9\u679c\u7684\u3067\u3059\u3002\u5177\u4f53\u7684\u306a\u65b9\u6cd5\u4f8b\u306f\u3001\u4ee5\u4e0b\u3067\u3059\u3002<\/p>\n\n\n\n<p>Kotlin\u306e\u57fa\u790e\u3092\u5fa9\u7fd2\u3059\u308b\u305f\u3081\u306b\u3001\u30aa\u30f3\u30e9\u30a4\u30f3\u306e\u7df4\u7fd2\u554f\u984c\u96c6\u3092\u6d3b\u7528\u3057\u307e\u3057\u3087\u3046\u3002\u4f8b\u3048\u3070\u3001\u30b3\u30fc\u30c9\u30e9\u30dcJP\u304c\u63d0\u4f9b\u3059\u308b\u300cKotlin\u5168\u7df4\u7fd2\u554f\u984c\u96c6\u300d\u3067\u306f\u3001\u3055\u307e\u3056\u307e\u306a\u30c8\u30d4\u30c3\u30af\u306b\u95a2\u3059\u308b\u554f\u984c\u304c\u7528\u610f\u3055\u308c\u3066\u304a\u308a\u3001\u7406\u89e3\u3092\u6df1\u3081\u308b\u306e\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong><span class=\"swl-marker mark_yellow\">Android\u958b\u767a\u306b\u7126\u70b9\u3092\u5f53\u3066\u308b\u5834\u5408\u306f\u3001Google\u304c\u63d0\u4f9b\u3059\u308b\u516c\u5f0f\u30c8\u30ec\u30fc\u30cb\u30f3\u30b0\u300cAndroid Kotlin\u306e\u57fa\u790e\u300d\u304c\u6709\u52b9<\/span><\/strong>\u3067\u3059\u3002\u3053\u306e\u30b3\u30fc\u30b9\u3067\u306f\u3001Kotlin\u3092\u7528\u3044\u305fAndroid\u30a2\u30d7\u30ea\u958b\u767a\u306e\u57fa\u672c\u304b\u3089\u5fdc\u7528\u307e\u3067\u3092\u4f53\u7cfb\u7684\u306b\u5b66\u3079\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u307e\u305fAndroid\u30a2\u30d7\u30ea\u306e\u958b\u767a\u3068\u3044\u3063\u305f\u5b9f\u969b\u306e\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306b\u53d6\u308a\u7d44\u3080\u3053\u3068\u3067\u3001\u5b9f\u52d9\u306b\u76f4\u7d50\u3057\u305f\u30b9\u30ad\u30eb\u3092\u7fd2\u5f97\u3067\u304d\u308b\u3067\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h2 id=\"rtoc-8\"  class=\"wp-block-heading\"><a><\/a>Kotlin\u306e\u5c06\u6765\u6027\u3068\u30ad\u30e3\u30ea\u30a2\u30d1\u30b9<\/h2>\n\n\n\n<p>\u3053\u3053\u304b\u3089\u306fKotlin\u306e\u5c06\u6765\u6027\u3068\u30ad\u30e3\u30ea\u30a2\u30d1\u30b9\u306b\u3064\u3044\u3066\u3001\u4ee5\u4e0b3\u3064\u306e\u8996\u70b9\u304b\u3089\u89e3\u8aac\u3057\u307e\u3059<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><a><\/a>Kotlin\u30a8\u30f3\u30b8\u30cb\u30a2\u306e\u6c42\u4eba\u30c8\u30ec\u30f3\u30c9\u3068\u9700\u8981<\/h3>\n\n\n\n<p>Kotlin\u30a8\u30f3\u30b8\u30cb\u30a2\u306e\u9700\u8981\u306f\u8fd1\u5e74\u3001\u5897\u52a0\u50be\u5411\u306b\u3042\u308a\u307e\u3059\u3002Kotlin\u30b9\u30ad\u30eb\u3092\u6301\u3064\u30a8\u30f3\u30b8\u30cb\u30a2\u306f\u591a\u304f\u306e\u4f01\u696d\u3067\u9ad8\u304f\u8a55\u4fa1\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u304b\u3089\u3001\u9ad8\u3044\u7d66\u4e0e\u6c34\u6e96\u3092\u671f\u5f85\u3067\u304d\u308b\u3067\u3057\u3087\u3046\u3002\u7279\u306b\u3001\u30e2\u30d0\u30a4\u30eb\u30a2\u30d7\u30ea\u958b\u767a\u3084\u30d0\u30c3\u30af\u30a8\u30f3\u30c9\u958b\u767a\u306e\u5206\u91ce\u3067\u9700\u8981\u304c\u9855\u8457\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u4eca\u5f8c\u3055\u3089\u306bKotlin\u3092\u5c0e\u5165\u3059\u308b\u4f01\u696d\u304c\u5897\u3048\u308b\u4e88\u6e2c\u3082\u3042\u308b\u3053\u3068\u304b\u3089\u3001Kotlin\u30a8\u30f3\u30b8\u30cb\u30a2\u306e\u30ad\u30e3\u30ea\u30a2\u30d1\u30b9\u306f\u660e\u308b\u304f\u3001\u4eca\u5f8c\u3082\u9700\u8981\u304c\u9ad8\u307e\u308b\u3068\u4e88\u60f3\u3055\u308c\u307e\u3059\u3002Kotlin\u306e\u7fd2\u5f97\u306f\u3001\u30a8\u30f3\u30b8\u30cb\u30a2\u3068\u3057\u3066\u306e\u5e02\u5834\u4fa1\u5024\u3092\u9ad8\u3081\u308b\u6709\u52b9\u306a\u624b\u6bb5\u3068\u306a\u308b\u3067\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><a><\/a>Kotlin\u304c\u6d3b\u7528\u3055\u308c\u308b\u65b0\u305f\u306a\u5206\u91ce\u306e\u53ef\u80fd\u6027<\/h3>\n\n\n\n<p>Kotlin\u306fAndroid\u30a2\u30d7\u30ea\u958b\u767a\u3067\u5e83\u304f\u63a1\u7528\u3055\u308c\u3066\u3044\u307e\u3059\u304c\u3001\u8fd1\u5e74\u3067\u306f\u4ed6\u306e\u5206\u91ce\u3078\u306e\u9069\u7528\u3082\u9032\u3093\u3067\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u7279\u306b\u6ce8\u76ee\u3055\u308c\u308b\u306e\u304c\u3001Kotlin\/Native\u306e\u767b\u5834\u3067\u3059\u3002\u3053\u308c\u306fJava\u4eee\u60f3\u30de\u30b7\u30f3\uff08JVM\uff09\u3092\u4ecb\u3055\u305a\u306b\u30cd\u30a4\u30c6\u30a3\u30d6\u74b0\u5883\u3067\u5b9f\u884c\u53ef\u80fd\u306a\u30d0\u30a4\u30ca\u30ea\u3092\u751f\u6210\u3059\u308b\u6280\u8853\u3067\u3042\u308a\u3001\u7d44\u307f\u8fbc\u307f\u30b7\u30b9\u30c6\u30e0\u3084macOS\u3001iOS\u3001Linux\u306a\u3069\u591a\u69d8\u306a\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u3078\u306e\u5bfe\u5fdc\u304c\u53ef\u80fd\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong><span class=\"swl-marker mark_yellow\">\u3053\u306e\u6280\u8853\u306b\u3088\u308a\u30e2\u30d0\u30a4\u30eb\u30a2\u30d7\u30ea\u958b\u767a\u306b\u304a\u3044\u3066\u3082\u3001iOS\u30a2\u30d7\u30ea\u306e\u958b\u767a\u306bKotlin\u3092\u6d3b\u7528\u3059\u308b\u9053\u304c\u958b\u304b\u308c\u307e\u3057\u305f\u3002\u3055\u3089\u306b\u30b5\u30fc\u30d0\u30fc\u30b5\u30a4\u30c9\u958b\u767a\u3084Web\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u958b\u767a\u306b\u304a\u3044\u3066\u3082\u3001Kotlin\u306e\u30b7\u30f3\u30d7\u30eb\u3067\u8868\u73fe\u529b\u8c4a\u304b\u306a\u69cb\u6587\u304c\u8a55\u4fa1\u3055\u308c\u3001\u63a1\u7528\u304c\u9032\u3093\u3067\u3044\u307e\u3059\u3002<\/span><\/strong><\/p>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u52d5\u5411\u304b\u3089\u3001Kotlin\u306f\u4eca\u5f8c\u30e2\u30d0\u30a4\u30eb\u30a2\u30d7\u30ea\u958b\u767a\u306e\u307f\u306a\u3089\u305a\u3001\u30af\u30ed\u30b9\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u958b\u767a\u3084\u30b5\u30fc\u30d0\u30fc\u30b5\u30a4\u30c9\u958b\u767a\u306a\u3069\u3001\u3055\u307e\u3056\u307e\u306a\u5206\u91ce\u3067\u306e\u6d3b\u7528\u304c\u671f\u5f85\u3055\u308c\u307e\u3059\u3002\u30a8\u30f3\u30b8\u30cb\u30a2\u306b\u3068\u3063\u3066\u3001Kotlin\u306e\u7fd2\u5f97\u306f\u30ad\u30e3\u30ea\u30a2\u306e\u5e45\u3092\u5e83\u3052\u308b\u6709\u529b\u306a\u624b\u6bb5\u3068\u306a\u308b\u3067\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h3 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mark_yellow\">Kotlin\u306fJava\u3068\u306e\u4e92\u63db\u6027\u304c\u9ad8\u304f\u3001\u65e2\u5b58\u306eJava\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3078\u306e\u5c0e\u5165\u3082\u5bb9\u6613\u3067\u3059\u3002\u305d\u306e\u305f\u3081Java\u30a8\u30f3\u30b8\u30cb\u30a2\u304cKotlin\u3092\u7fd2\u5f97\u3059\u308b\u3068\u3001\u696d\u52d9\u306e\u5e45\u3092\u5e83\u3052\u3089\u308c\u308b<\/span><\/strong>\u3067\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<p>Kotlin\u7fd2\u5f97\u306e\u5177\u4f53\u7684\u306a\u65b9\u6cd5\u306f\u3001Kotlin\u306e\u516c\u5f0f\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u3084\u30aa\u30f3\u30e9\u30a4\u30f3\u5b66\u7fd2\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u3092\u6d3b\u7528\u3059\u308b\u3053\u3068\u3067\u3059\u3002\u307e\u305fKotlin\u3092\u7528\u3044\u305f\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306b\u7a4d\u6975\u7684\u306b\u53c2\u52a0\u3057\u3001\u5b9f\u52d9\u7d4c\u9a13\u3092\u7a4d\u3080\u3053\u3068\u3067\u3001\u30b9\u30ad\u30eb\u3092\u78e8\u304f\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u53d6\u308a\u7d44\u307f\u306b\u3088\u308a\u3001Kotlin\u30a8\u30f3\u30b8\u30cb\u30a2\u3068\u3057\u3066\u306e\u5e02\u5834\u4fa1\u5024\u3092\u9ad8\u3081\u3001\u30ad\u30e3\u30ea\u30a2\u30a2\u30c3\u30d7\u306b\u3064\u306a\u3052\u3089\u308c\u308b\u3067\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h2 id=\"rtoc-9\"  class=\"wp-block-heading\"><a><\/a>Kotlin\u5c0e\u5165\u306b\u304a\u3051\u308b\u6ce8\u610f\u70b9<\/h2>\n\n\n\n<p>\u3053\u3053\u304b\u3089\u306f\u3001Kotlin\u5c0e\u5165\u306b\u304a\u3051\u308b\u4ee5\u4e0b3\u3064\u306e\u6ce8\u610f\u70b9\u3092\u8a73\u3057\u304f\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><a><\/a>\u5c0e\u5165\u3092\u691c\u8a0e\u3059\u308b\u969b\u306e\u6280\u8853\u7684\u306a\u30cf\u30fc\u30c9\u30eb<\/h3>\n\n\n\n<p>Kotlin\u306e\u5c0e\u5165\u306b\u969b\u3057\u3066\u306f\u3001\u3044\u304f\u3064\u304b\u306e\u6280\u8853\u7684\u306a\u30cf\u30fc\u30c9\u30eb\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3072\u3068\u3064\u306f\u3001\u65e2\u5b58\u306e\u30b3\u30fc\u30c9\u30d9\u30fc\u30b9\u3068\u306e\u4e92\u63db\u6027\u306e\u554f\u984c\u3067\u3059\u3002\u7279\u306b\u65e2\u5b58\u306e\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u304cJava\u3067\u69cb\u7bc9\u3055\u308c\u3066\u3044\u308b\u5834\u5408\u3001Kotlin\u3068\u306e\u76f8\u4e92\u904b\u7528\u6027\u3092\u78ba\u4fdd\u3059\u308b\u305f\u3081\u306e\u8ffd\u52a0\u306e\u4f5c\u696d\u304c\u5fc5\u8981\u3068\u306a\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u307e\u305f\u3001\u30c1\u30fc\u30e0\u30e1\u30f3\u30d0\u30fc\u5168\u54e1\u304cKotlin\u306b\u7cbe\u901a\u3057\u3066\u3044\u306a\u3044\u5834\u5408\u3001\u65b0\u305f\u306a\u8a00\u8a9e\u306e\u5b66\u7fd2\u30b3\u30b9\u30c8\u304c\u767a\u751f\u3057\u3001\u751f\u7523\u6027\u306e\u4e00\u6642\u7684\u306a\u4f4e\u4e0b\u3092\u62db\u304f\u53ef\u80fd\u6027\u304c\u3042\u308b\u3067\u3057\u3087\u3046\u3002\u3055\u3089\u306b\u3001Kotlin\u7279\u6709\u306e\u30c4\u30fc\u30eb\u3084\u30e9\u30a4\u30d6\u30e9\u30ea\u306e\u5c0e\u5165\u30fb\u8a2d\u5b9a\u306b\u6642\u9593\u3092\u8981\u3059\u308b\u53ef\u80fd\u6027\u3082\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u6280\u8853\u7684\u30cf\u30fc\u30c9\u30eb\u3092\u4e57\u308a\u8d8a\u3048\u308b\u305f\u3081\u306b\u306f\u3001\u6bb5\u968e\u7684\u306a\u5c0e\u5165\u306e\u691c\u8a0e\u304c\u4e0d\u53ef\u6b20\u3067\u3059\u3002\u5c0f\u898f\u6a21\u306a\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3084\u30e2\u30b8\u30e5\u30fc\u30eb\u304b\u3089Kotlin\u3092\u5c0e\u5165\u3059\u308b\u3053\u3068\u3067\u3001\u30ea\u30b9\u30af\u3092\u6700\u5c0f\u9650\u306b\u6291\u3048\u3089\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><a><\/a>\u958b\u767a\u30d7\u30ed\u30bb\u30b9\u3067\u306e\u8ab2\u984c\u3068\u305d\u306e\u89e3\u6c7a\u7b56<\/h3>\n\n\n\n<p>Kotlin\u5c0e\u5165\u306b\u969b\u3057\u3066\u306f\u3001\u958b\u767a\u30d7\u30ed\u30bb\u30b9\u3067\u306e\u8ab2\u984c\u3068\u305d\u306e\u89e3\u6c7a\u7b56\u306e\u7406\u89e3\u304c\u4e0d\u53ef\u6b20\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u7279\u306bKotlin Multiplatform\uff08KMP\uff09\u306e\u63a1\u7528\u306f\u3001\u8907\u6570\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u9593\u3067\u306e\u30b3\u30fc\u30c9\u5171\u6709\u3092\u53ef\u80fd\u306b\u3057\u3001\u958b\u767a\u52b9\u7387\u306e\u5411\u4e0a\u304c\u671f\u5f85\u3067\u304d\u307e\u3059\u3002\u3057\u304b\u3057\u3001\u5c0e\u5165\u306b\u306f\u3044\u304f\u3064\u304b\u306e\u6280\u8853\u7684\u30cf\u30fc\u30c9\u30eb\u304c\u5b58\u5728\u3059\u308b\u306e\u3067\u3059\u3002<\/p>\n\n\n\n<p>KMP\u306e\u5c0e\u5165\u306b\u3088\u308aiOS\u3068Android\u9593\u3067\u306e\u52d5\u4f5c\u306e\u4e0d\u4e00\u81f4\u304c\u89e3\u6d88\u3055\u308c\u3001\u54c1\u8cea\u5411\u4e0a\u304c\u898b\u8fbc\u307e\u308c\u307e\u3059\u304c\u3001KMP\u306e\u5c0e\u5165\u306b\u306f\u6280\u8853\u7684\u306a\u8ab2\u984c\u3082\u4f34\u3044\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001KMP\u3092\u30d0\u30a4\u30ca\u30ea\u5f62\u5f0f\u3067iOS\u3068Android\u3078\u914d\u5e03\u3059\u308b\u5834\u5408\u3001\u5909\u66f4\u6642\u306e\u5f71\u97ff\u7bc4\u56f2\u304c\u5927\u304d\u304f\u3001\u30ea\u30ea\u30fc\u30b9\u30b5\u30a4\u30af\u30eb\u304c\u8907\u96d1\u5316\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u306e\u8ab2\u984c\u306b\u5bfe\u3059\u308b\u89e3\u6c7a\u7b56\u3068\u3057\u3066\u3001\u30d0\u30a4\u30ca\u30ea\u5f62\u5f0f\u304b\u3089\u30bd\u30fc\u30b9\u5f62\u5f0f\u3078\u306e\u4f9d\u5b58\u5f62\u614b\u306b\u79fb\u884c\u3059\u308b\u3053\u3068\u304c\u8003\u3048\u3089\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u307e\u305fKMP\u5c0e\u5165\u306b\u3088\u308a\u3001\u30c1\u30fc\u30e0\u30e1\u30f3\u30d0\u30fc\u304c\u65b0\u305f\u306a\u6280\u8853\u30b9\u30bf\u30c3\u30af\u3092\u5b66\u7fd2\u3059\u308b\u5fc5\u8981\u304c\u751f\u3058\u3001\u5b66\u7fd2\u30b3\u30b9\u30c8\u304c\u5897\u5927\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u306e\u554f\u984c\u306b\u5bfe\u51e6\u3059\u308b\u305f\u3081\u3001<strong><span class=\"swl-marker mark_yellow\">\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u306e\u6574\u5099\u3084\u30da\u30a2\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306e\u5b9f\u65bd\u306a\u3069\u3001\u30c1\u30fc\u30e0\u5168\u4f53\u3067\u306e\u77e5\u8b58\u5171\u6709\u304c\u91cd\u8981<\/span><\/strong>\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3064\u307e\u308aKotlin\u5c0e\u5165\u6642\u306b\u306f\u3053\u308c\u3089\u306e\u6280\u8853\u7684\u8ab2\u984c\u3092\u8a8d\u8b58\u3057\u3001\u9069\u5207\u306a\u89e3\u6c7a\u7b56\u3092\u8b1b\u3058\u308b\u3053\u3068\u3067\u3001\u958b\u767a\u30d7\u30ed\u30bb\u30b9\u306e\u5186\u6ed1\u5316\u3068\u54c1\u8cea\u5411\u4e0a\u304c\u671f\u5f85\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><a><\/a>\u904b\u7528\u30b3\u30b9\u30c8\u3068\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u306e\u30dd\u30a4\u30f3\u30c8<\/h3>\n\n\n\n<p>Kotlin\u3092\u5c0e\u5165\u3059\u308b\u969b\u306f\u3001\u904b\u7528\u30b3\u30b9\u30c8\u3068\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u306b\u304a\u3044\u3066\u3001\u3044\u304f\u3064\u304b\u306e\u6ce8\u610f\u70b9\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong><span class=\"swl-marker 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id=\"rtoc-10\"  class=\"wp-block-heading\">Kotlin\u6848\u4ef6\u306a\u3089\u30a8\u30f3\u30b8\u30cb\u30a2\u30d5\u30a1\u30af\u30c8\u30ea\u30fc<\/h2>\n\n\n\n<figure class=\"wp-block-image size-full is-resized u-mb-ctrl u-mb-5\"><img decoding=\"async\" width=\"1090\" height=\"558\" src=\"https:\/\/www.engineer-factory.com\/media\/wp-content\/uploads\/2025\/01\/KV.webp\" alt=\"\" class=\"wp-image-6584\" style=\"width:852px;height:auto\" srcset=\"https:\/\/www.engineer-factory.com\/media\/wp-content\/uploads\/2025\/01\/KV.webp 1090w, https:\/\/www.engineer-factory.com\/media\/wp-content\/uploads\/2025\/01\/KV-300x154.webp 300w, https:\/\/www.engineer-factory.com\/media\/wp-content\/uploads\/2025\/01\/KV-1024x524.webp 1024w, https:\/\/www.engineer-factory.com\/media\/wp-content\/uploads\/2025\/01\/KV-768x393.webp 768w\" sizes=\"(max-width: 1090px) 100vw, 1090px\" 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