{"id":67085,"date":"2020-08-17T17:11:18","date_gmt":"2020-08-17T17:11:18","guid":{"rendered":"http:\/\/blog.jetbrains.com\/?post_type=kotlin&#038;p=67085"},"modified":"2020-08-17T17:11:18","modified_gmt":"2020-08-17T17:11:18","slug":"kotlin-1-4-released-with-a-focus-on-quality-and-performance-ja","status":"publish","type":"kotlin","link":"https:\/\/blog.jetbrains.com\/ja\/kotlin\/2020\/08\/kotlin-1-4-released-with-a-focus-on-quality-and-performance-ja\/","title":{"rendered":"\u54c1\u8cea\u3068\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306b\u6ce8\u529b\u3057\u305f Kotlin 1.4 \u3092\u30ea\u30ea\u30fc\u30b9\u3057\u307e\u3057\u305f"},"content":{"rendered":"<p>\u672c\u65e5\u3001Kotlin 1.4.0 \u3092\u30ea\u30ea\u30fc\u30b9\u3057\u307e\u3057\u305f\uff01 \u79c1\u305f\u3061\u306f\u904e\u53bb\u6570\u5e74\u9593\u3001Kotlin \u3092\u697d\u3057\u304f\u751f\u7523\u7684\u306b\u4f5c\u696d\u3067\u304d\u308b\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u8a00\u8a9e\u306b\u3059\u308b\u305f\u3081\u306b\u4e00\u751f\u61f8\u547d\u306b\u53d6\u308a\u7d44\u3093\u3067\u304d\u307e\u3057\u305f\u3002 \u3053\u306e Kotlin \u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u3067\u306f\u3053\u306e\u76ee\u6a19\u3092\u8ffd\u6c42\u3057\u7d9a\u3051\u308b\u305f\u3081\u3001\u591a\u5927\u306a\u30a8\u30cd\u30eb\u30ae\u30fc\u3068\u52b4\u529b\u3092\u6ce8\u3044\u3067 Kotlin \u3068\u95a2\u9023\u30c4\u30fc\u30eb\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3068\u54c1\u8cea\u3092\u6539\u5584\u3057\u307e\u3057\u305f\u3002 \u307e\u305f\u3001\u5f85\u3061\u671b\u307e\u308c\u3066\u3044\u305f Kotlin \u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e SAM \u5909\u63db\u3092\u542b\u3080\u3044\u304f\u3064\u304b\u306e\u65b0\u3057\u3044\u8a00\u8a9e\u6a5f\u80fd\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u307e\u3057\u305f\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/blog.jetbrains.com\/wp-content\/uploads\/2020\/08\/image-1597417083773.png\" alt=\"file\" \/><\/p>\n<p>Kotlin 1.4 \u3067\u5c0e\u5165\u3055\u308c\u308b\u5909\u66f4\u70b9\u3068\u6539\u5584\u70b9\u3092\u6700\u5927\u9650\u306b\u6d3b\u7528\u3067\u304d\u308b\u3088\u3046\u3001\u7686\u69d8\u3092 <a href=\"https:\/\/kotlinlang.org\/lp\/event-14\" target=\"_blank\" rel=\"noopener\">Kotlin 1.4 \u30aa\u30f3\u30e9\u30a4\u30f3\u30a4\u30d9\u30f3\u30c8<\/a>\u306b\u3054\u62db\u5f85\u3057\u307e\u3059\u3002\u3053\u306e\u30a4\u30d9\u30f3\u30c8\u3067\u306f 4 \u65e5\u9593\u306b\u308f\u305f\u308b Kotlin \u95a2\u9023\u306e\u8b1b\u6f14\u3001Kotlin \u30c1\u30fc\u30e0\u3068\u306e\u8cea\u7591\u5fdc\u7b54\u30bb\u30c3\u30b7\u30e7\u30f3\u306a\u3069\u304c\u4e88\u5b9a\u3055\u308c\u3066\u304a\u308a\u3001\u5b8c\u5168\u7121\u6599\u3067\u3054\u53c2\u52a0\u3044\u305f\u3060\u3051\u307e\u3059\u3002<\/p>\n<h2 id=\"compiler-and-ecosystem\">\u30b3\u30df\u30e5\u30cb\u30c6\u30a3\u3068\u30a8\u30b3\u30b7\u30b9\u30c6\u30e0<\/h2>\n<p>\u904e\u53bb 12 \u30ab\u6708\u9593\u3067 580 \u4e07\u4eba\u4ee5\u4e0a\u304c Kotlin \u306e\u30b3\u30fc\u30c9\u3092\u7de8\u96c6\u3057\u3066\u304a\u308a\u3001\u305d\u306e\u6570\u306f\u5e38\u306b\u5897\u3048\u7d9a\u3051\u3066\u3044\u307e\u3059\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/blog.jetbrains.com\/wp-content\/uploads\/2020\/08\/image-1596831871952.png\" alt=\"\u30d5\u30a1\u30a4\u30eb\" \/><\/p>\n<p>Kotlin \u306e\u77e5\u540d\u5ea6\u304c\u9ad8\u307e\u3063\u3066\u3044\u308b\u3053\u3068\u3092\u559c\u3070\u3057\u304f\u601d\u3063\u3066\u3044\u307e\u3059\u3002 \u6709\u52b9\u30e6\u30fc\u30b6\u30fc\u6570\u306f\u7279\u306b\u671f\u5f85\u304c\u6301\u3066\u307e\u3059\uff08\u3053\u306e\u6e2c\u5b9a\u9805\u76ee\u306b\u95a2\u3059\u308b\u8a73\u7d30\u306f\u4eca\u5f8c\u306e\u30d6\u30ed\u30b0\u8a18\u4e8b\u3067\u8aac\u660e\u3057\u307e\u3059\uff09\u3002 \u4eca\u56de\u306f\u524d\u5e74\u306e 1.5 \u500d\u4ee5\u4e0a\u306e\u6570\u5024\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<p><a href=\"https:\/\/insights.stackoverflow.com\/survey\/2020#most-popular-technologies\" target=\"_blank\" rel=\"noopener\">StackOverflow \u306e\u958b\u767a\u8005\u30a2\u30f3\u30b1\u30fc\u30c8\uff082020\u5e74\u7248\uff09<\/a>\u306b\u3088\u308b\u3068\u3001Kotlin \u306f\u30d7\u30ed\u958b\u767a\u8005\u306b\u6700\u3082\u4eba\u6c17\u306e\u3042\u308b\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u8a00\u8a9e\u3067 13 \u4f4d\u306b\u306a\u308a\u307e\u3057\u305f\u3002Kotlin \u304c\u6700\u3082\u611b\u3055\u308c\u308b\u4e0a\u4f4d 5 \u8a00\u8a9e\u306e 1 \u3064\u306b\u306a\u3063\u305f\u3053\u3068\u3092\u559c\u3070\u3057\u304f\u601d\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u591a\u304f\u306e\u4f01\u696d\u304c Kotlin \u3092\u81ea\u793e\u306e\u512a\u5148\u8a00\u8a9e\u306b\u9078\u3093\u3067\u304a\u308a\u3001\u69d8\u3005\u306a\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u3067\u6d3b\u7528\u3057\u3066\u3044\u307e\u3059\u3002 \u3053\u306e\u3088\u3046\u306a\u50be\u5411\u3092\u559c\u3070\u3057\u304f\u601d\u3046\u3068\u540c\u6642\u306b\u3001\u30b3\u30df\u30e5\u30cb\u30c6\u30a3\u5411\u3051\u306b\u95b2\u89a7\u30fb\u5b66\u7fd2\u3067\u304d\u308b\u30b1\u30fc\u30b9\u30b9\u30bf\u30c7\u30a3\u3092\u63d0\u4f9b\u3044\u305f\u3060\u3044\u305f\u3053\u308c\u3089\u591a\u304f\u306e\u4f01\u696d\u306b\u6df1\u304f\u611f\u8b1d\u3057\u3066\u304a\u308a\u307e\u3059\u3002 \u4ee5\u4e0b\u306f\u3001\u6700\u8fd1 Kotlin \u3067\u958b\u767a\u3055\u308c\u305f\u7d20\u6674\u3089\u3057\u3044\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u306e\u4f8b\u3067\u3059\u3002<\/p>\n<ul>\n<li>\u30b5\u30fc\u30d0\u30fc\u30b5\u30a4\u30c9: <a href=\"https:\/\/www.youtube.com\/watch?v=4GkoB4hZUnw\" target=\"_blank\" rel=\"noopener\">Atlassian<\/a>\u3001<a href=\"https:\/\/medium.com\/adobetech\/streamlining-server-side-app-development-with-kotlin-be8cf9d8b61a\" target=\"_blank\" rel=\"noopener\">Adobe<\/a>\u3001<a href=\"https:\/\/medium.com\/ing-blog\/introducing-kotlin-at-ing-a-long-but-rewarding-story-1bfcd3dc8da0\" target=\"_blank\" rel=\"noopener\">ING Bank<\/a><\/li>\n<li>Android: <a href=\"https:\/\/developer.android.com\/stories\/apps\/google-home\" target=\"_blank\" rel=\"noopener\">Google Home<\/a>\u3001<a href=\"https:\/\/developer.android.com\/stories\/apps\/duolingo-kotlin\" target=\"_blank\" rel=\"noopener\">Duolingo<\/a>\u3001<a href=\"https:\/\/www.youtube.com\/watch?v=ao9QvtpszOU\" target=\"_blank\" rel=\"noopener\">Zomato<\/a><\/li>\n<li>\u30de\u30eb\u30c1\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u30e2\u30d0\u30a4\u30eb: <a href=\"https:\/\/medium.com\/vmware-end-user-computing\/adopting-a-cross-platform-strategy-for-mobile-apps-59495ffa23b0\" target=\"_blank\" rel=\"noopener\">VMware<\/a>\u3001<a href=\"https:\/\/kotlinconf.com\/2019\/talks\/video\/2019\/116027\/\" target=\"_blank\" rel=\"noopener\">PlanGrid \u304a\u3088\u3073 CashApp<\/a>\u3001Mirego \u793e\u306e <a href=\"https:\/\/shift.mirego.com\/en\/trikot\" target=\"_blank\" rel=\"noopener\">Trikot<\/a><\/li>\n<li>\u30a6\u30a7\u30d6: <a href=\"https:\/\/kotlinconf.com\/2019\/talks\/video\/2019\/137062\/\" target=\"_blank\" rel=\"noopener\">JetBrains \u306e Space<\/a>\u3001<a href=\"https:\/\/www.karhoo.com\/\" target=\"_blank\" rel=\"noopener\">Karhoo<\/a>\u3001<a href=\"https:\/\/github.com\/mipt-npm\" target=\"_blank\" rel=\"noopener\">MIPT Nuclear physics methods laboratory<\/a>\u306e <a href=\"https:\/\/www.youtube.com\/watch?v=lzsF0NuhS6g\" target=\"_blank\" rel=\"noopener\">VisionForge<\/a><\/li>\n<\/ul>\n<p>Kotlin \u306e\u30b3\u30df\u30e5\u30cb\u30c6\u30a3\u3082\u6025\u901f\u306b\u6210\u9577\u3057\u3066\u3044\u307e\u3059\u3002 \u73fe\u5728\u30013\u4e07\u4eba\u4ee5\u4e0a\u306e Kotlin \u958b\u767a\u8005\u304c <a href=\"http:\/\/kotlinlang.slack.com\/\" target=\"_blank\" rel=\"noopener\">Slack<\/a> \u3084 <a href=\"https:\/\/www.reddit.com\/r\/Kotlin\/\" target=\"_blank\" rel=\"noopener\">Reddit<\/a> \u4e0a\u3067\u77e5\u8b58\u306e\u4ea4\u63db\u3084\u76f8\u4e92\u652f\u63f4\u3092\u884c\u3063\u3066\u304a\u308a\u30019\u4e07\u4eba\u4ee5\u4e0a\u304c\u5f53\u793e\u306e\u516c\u5f0f <a href=\"https:\/\/twitter.com\/kotlin\" target=\"_blank\" rel=\"noopener\">Twitter \u30a2\u30ab\u30a6\u30f3\u30c8<\/a>\u3092\u30d5\u30a9\u30ed\u30fc\u3057\u3066\u30d2\u30f3\u30c8\u3084\u30c8\u30ea\u30c3\u30af\u3001\u30a2\u30ca\u30a6\u30f3\u30b9\u3092\u53d7\u4fe1\u3057\u3066\u3044\u307e\u3059\u3002 \u4e16\u754c\u4e2d\u306b 200 \u4ee5\u4e0a\u306e\u30e6\u30fc\u30b6\u30fc\u30b0\u30eb\u30fc\u30d7\u3092\u64c1\u3059\u308b Kotlin \u306e\u30b3\u30df\u30e5\u30cb\u30c6\u30a3\u306f\u767a\u5c55\u3068\u6210\u9577\u3092\u7d9a\u3051\u3066\u3044\u307e\u3059\u3002 Kotlin\u306e\u8a8d\u77e5\u5ea6\u5411\u4e0a\u3078\u306e\u5354\u529b\u3001\u77e5\u8b58\u3092\u5171\u6709\u3001\u30b3\u30df\u30e5\u30cb\u30c6\u30a3\u30fc\u306e Kotlin \u958b\u767a\u8005\u3092\u652f\u63f4\u3044\u305f\u3060\u3044\u305f\u7686\u69d8\u306b\u611f\u8b1d\u3044\u305f\u3057\u307e\u3059\u3002 \u7686\u69d8\u304c\u4f5c\u308a\u51fa\u3059\u6e29\u304b\u304f\u53cb\u597d\u7684\u306a\u96f0\u56f2\u6c17\u306e\u304a\u304b\u3052\u3067\u3001\u975e\u5e38\u306b\u697d\u3057\u304f Kotlin \u306e\u53ef\u80fd\u6027\u3092\u4e00\u7dd2\u306b\u63a2\u308b\u3053\u3068\u304c\u3067\u304d\u3066\u3044\u307e\u3059\u3002 \u7686\u69d8\u304c\u3044\u306a\u3051\u308c\u3070\u3053\u306e\u3088\u3046\u306a\u72b6\u6cc1\u306b\u306f\u306a\u3089\u306a\u304b\u3063\u305f\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n<h3 id=\"online-event\">Kotlin 1.4 \u30aa\u30f3\u30e9\u30a4\u30f3\u30a4\u30d9\u30f3\u30c8<\/h3>\n<p>\u79c1\u305f\u3061\u306f\u7686\u69d8\u304c Kotlin 1.4 \u306e\u4f7f\u7528\u306b\u6e80\u8db3\u3057\u3066\u3044\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u3001\u3053\u306e\u8a00\u8a9e\u306e\u4eca\u5f8c\u306e\u65b9\u5411\u6027\u3092\u7686\u69d8\u306b\u3088\u304f\u7406\u89e3\u3057\u3066\u3044\u305f\u3060\u304d\u305f\u3044\u3068\u8003\u3048\u3066\u3044\u307e\u3059\u3002 \u305d\u306e\u305f\u3081\u3001\u7686\u69d8\u3092 Kotlin 1.4 \u30aa\u30f3\u30e9\u30a4\u30f3\u30a4\u30d9\u30f3\u30c8\u306b\u3054\u62db\u5f85\u3057\u307e\u3059\uff01<\/p>\n<p>\u3053\u306e\u30a4\u30d9\u30f3\u30c8\u306f 4 \u65e5\u9593\u958b\u50ac\u3055\u308c\u3001Kotlin \u306b\u95a2\u3059\u308b\u77e5\u8b58\u3068\u540c\u8a00\u8a9e\u3068\u30a8\u30b3\u30b7\u30b9\u30c6\u30e0\u306e\u5c06\u6765\u304c\u53d6\u308a\u4e0a\u3052\u3089\u308c\u307e\u3059\u3002\u5177\u4f53\u7684\u306b\u306f Kotlin 1.4 \u3067\u5c0e\u5165\u3055\u308c\u305f\u65b0\u3057\u3044\u5909\u66f4\u3084\u6539\u5584\u70b9\u306b\u3064\u3044\u3066\u8b70\u8ad6\u3057\u3001\u540c\u8a00\u8a9e\u306e\u4eca\u5f8c\u306e\u8a08\u753b\u3092\u304a\u4f1d\u3048\u3059\u308b\u4e88\u5b9a\u3067\u3059\u3002 \u6bce\u65e5\u306e\u8cea\u7591\u5fdc\u7b54\u30bb\u30c3\u30b7\u30e7\u30f3\u3067\u306f\u3001\u5f53\u793e\u306e Kotlin \u30c1\u30fc\u30e0\u30e1\u30f3\u30d0\u30fc\u304c\u7686\u69d8\u304b\u3089\u306e\u3054\u8cea\u554f\u306b\u56de\u7b54\u3057\u307e\u3059\u3002 Twitter \u3067\u30cf\u30c3\u30b7\u30e5\u30bf\u30b0\u300c<a href=\"https:\/\/twitter.com\/search?q=%23kotlin14ask&amp;src=typed_query\" target=\"_blank\" rel=\"noopener\">#kotlin14ask<\/a>\u300d\u3092\u4ed8\u3051\u3066\u6295\u7a3f\u3059\u308b\u304b\u3001<a href=\"https:\/\/surveys.jetbrains.com\/s3\/Q-A-Your-question-for-the-Kotlin-team\" target=\"_blank\" rel=\"noopener\">\u3053\u3061\u3089\u306e\u30d5\u30a9\u30fc\u30e0<\/a>\u3092\u4f7f\u7528\u3057\u3066\u4e8b\u524d\u306b\u3054\u8cea\u554f\u3092\u304a\u5bc4\u305b\u304f\u3060\u3055\u3044\u3002<\/p>\n<p>Kotlin 1.4 \u30aa\u30f3\u30e9\u30a4\u30f3\u30a4\u30d9\u30f3\u30c8\u306f10\u670812\u65e5\u304b\u308915\u65e5\u307e\u3067\u914d\u4fe1\u3055\u308c\u308b\u4e88\u5b9a\u3067\u3059\u3002\u307e\u305f\u3001\u6b21\u306e\u30ea\u30f3\u30af\u304b\u3089<strong><em>\u7121\u6599<\/em><\/strong>\u3067\u3054\u767b\u9332\u3044\u305f\u3060\u3051\u307e\u3059\u3002<\/p>\n<p align=\"center\"><a class=\"jb-download-button\" href=\"https:\/\/kotlinlang.org\/lp\/event-14#registration\" target=\"_blank\" rel=\"noopener\"><i class=\"download-icon\"><\/i>Kotlin 1.4 \u30aa\u30f3\u30e9\u30a4\u30f3\u30a4\u30d9\u30f3\u30c8\u3078\u306e\u3054\u767b\u9332<\/a><\/p>\n<p>\u7686\u69d8\u306b\u304a\u4f1a\u3044\u3067\u304d\u308b\u3053\u3068\u3092\u697d\u3057\u307f\u306b\u3057\u3066\u3044\u307e\u3059\uff01<\/p>\n<h2 id=\"focusing-on-quality\">\u54c1\u8cea\u3078\u306e\u6ce8\u529b<\/h2>\n<p>\u3053\u306e\u30ea\u30ea\u30fc\u30b9\u3067\u306f IDE \u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3068\u5b89\u5b9a\u6027\u306e\u5411\u4e0a\u306a\u3069\u3001\u4e3b\u306b\u5168\u4f53\u7684\u306a Kotlin \u958b\u767a\u4f53\u9a13\u306e\u6539\u5584\u306b\u6ce8\u529b\u3057\u307e\u3057\u305f\u3002 \u79c1\u305f\u3061\u306f\u53ef\u80fd\u306a\u9650\u308a Kotlin \u30e6\u30fc\u30b6\u30fc\u306e\u751f\u7523\u6027\u3092\u5411\u4e0a\u3059\u308b\u3053\u3068\u3092\u76ee\u6a19\u3068\u3057\u3066\u3044\u307e\u3059\u3002\u4eca\u56de\u306f\u30e6\u30fc\u30b6\u30fc\u306b\u3068\u3063\u3066\u6700\u3082\u91cd\u8981\u306a\u3082\u306e\u3092\u6539\u5584\u3059\u308b\u3053\u3068\u306b\u6ce8\u529b\u3057\u3001\u3055\u3089\u306b\u5feb\u9069\u306b\u304a\u4f7f\u3044\u3044\u305f\u3060\u3051\u308b\u3088\u3046\u306b\u3057\u307e\u3057\u305f\u3002<\/p>\n<p>IDE \u306e\u30d5\u30ea\u30fc\u30ba\u3084\u30e1\u30e2\u30ea\u30ea\u30fc\u30af\u3092\u5f15\u304d\u8d77\u3053\u3059\u591a\u304f\u306e\u554f\u984c\u3092\u542b\u3081\u3001\u3053\u308c\u307e\u3067\u306b <a href=\"https:\/\/youtrack.jetbrains.com\/issues?q=%23%7BPerformance%20Problem%7D%20Subsystems:%20%7BIDE*%7D%20%23Fixed%20resolved%20date:%202019-10%20..%20Today%20and%20Target%20versions:%20-1.4.20\" target=\"_blank\" rel=\"noopener\">60 \u4ef6\u8d85<\/a>\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u554f\u984c\u3092\u30ec\u30d3\u30e5\u30fc\u3057\u3066\u89e3\u6d88\u3057\u307e\u3057\u305f\u3002 Kotlin 1.4.0 \u306e EAP \u30d5\u30a7\u30fc\u30ba\u3067\u306f\u3001\u5168\u4f53\u7684\u306a\u4f7f\u7528\u611f\u304c\u5927\u5e45\u306b\u6539\u5584\u3055\u308c\u305f\u3053\u3068\u3092\u793a\u3059\u591a\u304f\u306e\u80af\u5b9a\u7684\u306a\u30d5\u30a3\u30fc\u30c9\u30d0\u30c3\u30af\u304c\u5bc4\u305b\u3089\u308c\u307e\u3057\u305f\u3002<\/p>\n<p>\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3092\u64cd\u4f5c\u4e2d\u306b\u5de8\u5927\u306a Kotlin \u30d5\u30a1\u30a4\u30eb\u3092\u521d\u3081\u3066\u958b\u304f\u969b\u3001\u305d\u306e\u5185\u5bb9\u304c\u306f\u308b\u304b\u306b\u9ad8\u901f\u306b\u30cf\u30a4\u30e9\u30a4\u30c8\u3055\u308c\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3057\u305f\u3002 \u307b\u3068\u3093\u3069\u306e\u5834\u5408\u3001\u30cf\u30a4\u30e9\u30a4\u30c8\u306f 1.5 \u500d\u304b\u3089 4 \u500d\u7a0b\u5ea6\u306b\u9ad8\u901f\u5316\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/blog.jetbrains.com\/wp-content\/uploads\/2020\/08\/image-1596832840332.png\" data-gif-src=\"https:\/\/resources.jetbrains.com\/storage\/products\/blog\/wp-content\/uploads\/Kotlin\/1.4-release-highlighting.gif\" width=\"607\" height=\"454\" \/><\/p>\n<p>\u81ea\u52d5\u88dc\u5b8c\u5019\u88dc\u304c\u8868\u793a\u3055\u308c\u308b\u307e\u3067\u306e\u6642\u9593\u3082\u5927\u5e45\u306b\u6539\u5584\u3057\u307e\u3057\u305f\u3002 \u6b21\u306e\u30b0\u30e9\u30d5\u306f\u3001Kotlin \u30e6\u30fc\u30b6\u30fc\u304c\u4f53\u9a13\u3059\u308b\u81ea\u52d5\u88dc\u5b8c\u306e\u5e73\u5747\u5fdc\u7b54\u6642\u9593\u306e\u6982\u8981\u3092\u793a\u3057\u307e\u3059\u3002 \u88dc\u5b8c\u306b 500 \u30df\u30ea\u79d2\u8d85\u3092\u8981\u3059\u308b\u30b1\u30fc\u30b9\u306e\u6570\u306f\u7d04\u534a\u5206\u306b\u524a\u6e1b\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/blog.jetbrains.com\/wp-content\/uploads\/2020\/08\/image-1597151211621.png\" alt=\"\u30d5\u30a1\u30a4\u30eb\" \/><\/p>\n<p>\u30b3\u30fc\u30c9\u30cf\u30a4\u30e9\u30a4\u30c8\u6a5f\u80fd\u306e\u9ad8\u901f\u5316\u3092\u542b\u3080\u3053\u308c\u3089\u306e\u6700\u65b0\u306e\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u3092\u4f7f\u3046\u306b\u306f\u3001IntelliJ IDEA 2020.1\u4ee5\u4e0a\u3001 \u307e\u305f\u306f Android Studio 4.1\u4ee5\u4e0a\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n<p>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6539\u5584\u306f\u5e38\u306b\u5b9f\u65bd\u3055\u308c\u3066\u304a\u308a\u3001\u7d99\u7d9a\u7684\u306a\u30d5\u30ea\u30fc\u30ba\u306e\u524a\u6e1b\u3084\u5165\u529b\u306e\u5186\u6ed1\u5316\u306a\u3069\u306e\u305d\u306e\u4ed6\u591a\u304f\u306e\u6a5f\u80fd\u5f37\u5316\u3082\u8a08\u753b\u3055\u308c\u3066\u3044\u307e\u3059\u3002 \u73fe\u6642\u70b9\u3067\u3059\u3067\u306b IDE \u3092\u5927\u5e45\u306b\u9ad8\u901f\u5316\u3059\u308b\u65b0\u3057\u3044\u5b9f\u9a13\u7684\u306a Kotlin <a href=\"#new-compiler\">\u30b3\u30f3\u30d1\u30a4\u30e9\u306e\u30d5\u30ed\u30f3\u30c8\u30a8\u30f3\u30c9<\/a>\u3068\u306e\u7d71\u5408\u3092\u958b\u59cb\u3057\u3066\u3044\u307e\u3059\u3002 \u3053\u308c\u306f\u30d7\u30e9\u30b0\u30a4\u30f3\u306e\u5927\u90e8\u5206\u3092\u66f8\u304d\u76f4\u3059\u5fc5\u8981\u306e\u3042\u308b\u5927\u304c\u304b\u308a\u306a\u4f5c\u696d\u3067\u3059\u304c\u3001\u30b3\u30fc\u30c9\u88dc\u5b8c\u3001\u30b7\u30f3\u30bf\u30c3\u30af\u30b9\u30cf\u30a4\u30e9\u30a4\u30c8\u3001\u30b3\u30f3\u30d1\u30a4\u30e9\u306e\u30a8\u30e9\u30fc\u30ec\u30dd\u30fc\u30c8\u3092\u542b\u3080 IDE \u306e\u591a\u304f\u306e\u9818\u57df\u3067\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u304c\u5411\u4e0a\u3059\u308b\u898b\u8fbc\u307f\u3067\u3059\u3002<\/p>\n<h3 id=\"new-ide-functionality\">\u65b0\u3057\u3044 IDE \u306e\u6a5f\u80fd<\/h3>\n<p>JetBrains \u306e\u30df\u30c3\u30b7\u30e7\u30f3\u306f\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u958b\u767a\u3092\u3088\u308a\u751f\u7523\u7684\u3067\u697d\u3057\u3044\u3082\u306e\u306b\u3059\u308b\u3053\u3068\u3067\u3059\u306e\u3067\u3001\u5f53\u7136\u306a\u304c\u3089\u512a\u308c\u305f Kotlin \u5468\u8fba\u306e\u30c4\u30fc\u30eb\u3092\u63d0\u4f9b\u3057\u3001\u53ef\u80fd\u306a\u9650\u308a Kotlin \u306e\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u3092\u697d\u306b\u3057\u305f\u3044\u3068\u8003\u3048\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u30b3\u30eb\u30fc\u30c1\u30f3\u3092\u3088\u308a\u6271\u3044\u3084\u3059\u304f\u3059\u308b\u305f\u3081\u3001\u7279\u306b\u4e26\u884c\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u5185\u306e\u30d0\u30b0\u3092\u6b63\u78ba\u306b\u7279\u5b9a\u3059\u308b\u305f\u3081\u3001<a href=\"https:\/\/kotlinlang.org\/docs\/reference\/whatsnew14.html#coroutine-debugger\" target=\"_blank\" rel=\"noopener\">Coroutine Debugger<\/a> \u3092\u5c0e\u5165\u3057\u307e\u3057\u305f\u3002 \u79c1\u305f\u3061\u306f\u30b3\u30df\u30e5\u30cb\u30c6\u30a3\u304c\u6700\u3082\u5fc5\u8981\u3068\u3059\u308b\u6a5f\u80fd\u3092\u63d0\u4f9b\u3059\u308b\u305f\u3081\u3001\u305d\u306e\u6700\u521d\u306e\u6a5f\u80fd\u30bb\u30c3\u30c8\u3092\u62e1\u5f35\u3059\u308b\u4e88\u5b9a\u3067\u3059\u3002\u305d\u306e\u305f\u3081\u3001\u5f53\u793e\u306e\u3044\u305a\u308c\u304b\u306e\u30c1\u30e3\u30cd\u30eb\u3092\u4f7f\u7528\u3059\u308b\u304b\u3001\u4ee5\u4e0b\u306e\u30b3\u30e1\u30f3\u30c8\u6b04\u3067\u30d5\u30a3\u30fc\u30c9\u30d0\u30c3\u30af\u3092\u304a\u5bc4\u305b\u304f\u3060\u3055\u3044\u3002<\/p>\n<p>\u307e\u305f\u3001\u67d4\u8edf\u6027\u306e\u9ad8\u3044\u65b0\u3057\u3044 <a href=\"https:\/\/kotlinlang.org\/docs\/reference\/whatsnew14.html#new-flexible-project-wizard\" target=\"_blank\" rel=\"noopener\">Kotlin Project Wizard<\/a> \u3092\u5c0e\u5165\u3057\u3066\u3044\u307e\u3059\u3002 \u3053\u306e\u65b0\u3057\u3044\u30a6\u30a3\u30b6\u30fc\u30c9\u3067\u306f\u5358\u4e00\u306e\u30d3\u30e5\u30fc\u3067\u3055\u307e\u3056\u307e\u306a\u30bf\u30a4\u30d7\u306e Kotlin \u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3092\u4f5c\u6210\u304a\u3088\u3073\u69cb\u6210\u53ef\u80fd\u3067\u3001\u30de\u30eb\u30c1\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306e\u3088\u3046\u306a\u3088\u308a\u8907\u96d1\u306a\u69cb\u9020\u3067\u3082\u7c21\u5358\u306b\u958b\u59cb\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>Kotlin 1.4.0 \u3068\u5171\u306b <a href=\"https:\/\/youtrack.jetbrains.com\/issues?q=%23Feature%20Subsystems:%20%7BIDE.%20Inspections%20and%20Intentions%7D%20%23Fixed%20resolved%20date:%202019-10%20..%20Today%20and%20Target%20versions:%20-1.4.20\" target=\"_blank\" rel=\"noopener\">40 \u500b\u306e\u65b0\u3057\u3044\u30af\u30a4\u30c3\u30af\u30d5\u30a3\u30c3\u30af\u30b9<\/a>\u3001\u30a4\u30f3\u30c6\u30f3\u30b7\u30e7\u30f3\u3001\u30a4\u30f3\u30b9\u30da\u30af\u30b7\u30e7\u30f3\u304c\u8ffd\u52a0\u3055\u308c\u3001\u5fc5\u8981\u306a\u3068\u304d\u306b\u6b63\u78ba\u306b\u5229\u7528\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3057\u305f\u3002\u30b3\u30fc\u30c9\u3092\u5909\u66f4\u3059\u308b\u969b\u306b <a href=\"https:\/\/www.jetbrains.com\/help\/idea\/intention-actions.html#apply-intention-actions\" target=\"_blank\" rel=\"noopener\">Alt+Enter \u3092\u62bc\u3059<\/a>\u3068\u3001\u305d\u306e\u7279\u5b9a\u306e\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u3067\u5229\u7528\u3067\u304d\u308b\u3082\u306e\u304c\u8868\u793a\u3055\u308c\u307e\u3059\u3002<\/p>\n<h3 id=\"new-compiler\">\u65b0\u3057\u3044\u30b3\u30f3\u30d1\u30a4\u30e9\u30fc<\/h3>\n<p>\u79c1\u305f\u3061\u306f\u304b\u306a\u308a\u4ee5\u524d\u304b\u3089\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3068\u62e1\u5f35\u6027\u306e\u70b9\u3067 Kotlin \u306e\u9032\u5316\u3092\u4fc3\u9032\u3059\u308b\u65b0\u3057\u3044 Kotlin \u30b3\u30f3\u30d1\u30a4\u30e9\u306b\u53d6\u308a\u7d44\u3093\u3067\u304d\u307e\u3057\u305f\u3002 \u65b0\u3057\u3044\u30b3\u30f3\u30d1\u30a4\u30e9\u306e\u4e3b\u306a\u76ee\u6a19\u306f\u3001\u5927\u5e45\u306a\u9ad8\u901f\u5316\u3068 Kotlin \u304c\u30b5\u30dd\u30fc\u30c8\u3059\u308b\u3059\u3079\u3066\u306e\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u306e\u7d71\u5408\u3001\u306a\u3089\u3073\u306b\u30b3\u30f3\u30d1\u30a4\u30e9\u62e1\u5f35\u6a5f\u80fd\u306e API \u3092\u63d0\u4f9b\u3059\u308b\u3053\u3068\u3067\u3059\u3002 \u65b0\u3057\u3044\u90e8\u54c1\u3092\u6bb5\u968e\u7684\u306b\u5c0e\u5165\u3057\u3001\u3067\u304d\u308b\u3060\u3051\u65e9\u304f\u30e6\u30fc\u30b6\u30fc\u304c\u305d\u308c\u3089\u3092\u8a66\u305b\u308b\u3088\u3046\u306b\u3057\u3066\u3044\u307e\u3059\u3002 Kotlin 1.4.0 \u3067\u306f\u3001\u3053\u306e\u9032\u884c\u4e2d\u306e\u53d6\u308a\u7d44\u307f\u306e\u4e2d\u304b\u3089\u4e00\u90e8\u3092\u30ea\u30ea\u30fc\u30b9\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<ul>\n<li>\u3055\u3089\u306b\u5f37\u5316\u3055\u308c\u305f\u65b0\u3057\u3044<a href=\"https:\/\/kotlinlang.org\/docs\/reference\/whatsnew14.html#new-more-powerful-type-inference-algorithm\" target=\"_blank\" rel=\"noopener\">\u578b\u63a8\u8ad6\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0<\/a>\u304c\u30c7\u30d5\u30a9\u30eb\u30c8\u3067\u6709\u52b9\u5316\u3055\u308c\u3066\u3044\u307e\u3059\u3002 \u3088\u308a\u591a\u304f\u306e\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u3067\u306e\u81ea\u52d5\u578b\u63a8\u8ad6\u3001\u8907\u96d1\u306a\u30b7\u30ca\u30ea\u30aa\u3067\u306e\u30b9\u30de\u30fc\u30c8\u30ad\u30e3\u30b9\u30c8\u306e\u30b5\u30dd\u30fc\u30c8\u3001\u30c7\u30ea\u30b2\u30fc\u30c8\u578b\u30d7\u30ed\u30d1\u30c6\u30a3\u306e\u63a8\u8ad6\u306e\u6539\u5584\u306a\u3069\u3092\u884c\u3044\u307e\u3059\u3002<\/li>\n<li><a href=\"https:\/\/kotlinlang.org\/docs\/reference\/whatsnew14.html#unified-backends-and-extensibility\" target=\"_blank\" rel=\"noopener\">\u65b0\u3057\u3044 JVM \u3068 JS IR \u30d0\u30c3\u30af\u30a8\u30f3\u30c9<\/a>\u306f <a href=\"https:\/\/kotlinlang.org\/docs\/reference\/evolution\/components-stability.html\" target=\"_blank\" rel=\"noopener\">Alpha<\/a> \u30e2\u30fc\u30c9\u3067\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002 \u5b89\u5b9a\u5316\u304c\u5b8c\u4e86\u6b21\u7b2c\u3001\u3053\u308c\u3089\u306f\u65b0\u3057\u3044\u30c7\u30d5\u30a9\u30eb\u30c8\u306b\u306a\u308a\u307e\u3059\u3002<\/li>\n<\/ul>\n<p>\u79c1\u305f\u3061\u306f\u73fe\u5728\u3001\u30b3\u30f3\u30d1\u30a4\u30e9\u30fc\u306e\u30d1\u30a4\u30d7\u30e9\u30a4\u30f3\u306b\u6700\u5927\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6539\u5584\u3092\u3082\u305f\u3089\u3059\u65b0\u3057\u3044\u30d5\u30ed\u30f3\u30c8\u30a8\u30f3\u30c9\u306e\u5b9f\u88c5\u306b\u6d3b\u767a\u306b\u53d6\u308a\u7d44\u3093\u3067\u3044\u307e\u3059\u3002 \u3053\u306e\u30d5\u30ed\u30f3\u30c8\u30a8\u30f3\u30c9\u306f\u3001\u30b3\u30fc\u30c9\u89e3\u6790\u3001\u540d\u524d\u306e\u89e3\u6c7a\u3001\u578b\u30c1\u30a7\u30c3\u30af\u306e\u5b9f\u884c\u3092\u62c5\u3046\u30b3\u30f3\u30d1\u30a4\u30e9\u306e\u4e00\u90e8\u3067\u3059\u3002\u305d\u306e\u305f\u3081\u3001IDE \u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306b\u3082\u5f71\u97ff\u3057\u307e\u3059\u3002 \u4eca\u5f8c\u306e\u30ea\u30ea\u30fc\u30b9\u3067\u30d7\u30ec\u30d3\u30e5\u30fc\u7248\u3092\u516c\u958b\u4e88\u5b9a\u3067\u3059\u306e\u3067\u3001\u305c\u3072\u3054\u671f\u5f85\u304f\u3060\u3055\u3044\uff01<\/p>\n<h2 id=\"language-features\">\u8a00\u8a9e\u6a5f\u80fd<\/h2>\n<p>Kotlin 1.4 \u306b\u306f\u3001\u6b21\u306e\u3088\u3046\u306a\u591a\u304f\u306e\u65b0\u6a5f\u80fd\u304c\u5b9f\u88c5\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<ul>\n<li><a href=\"https:\/\/kotlinlang.org\/docs\/reference\/whatsnew14.html#sam-conversions-for-kotlin-interfaces\" target=\"_blank\" rel=\"noopener\">Kotlin \u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e SAM \u5909\u63db<\/a><\/li>\n<li><a href=\"https:\/\/kotlinlang.org\/docs\/reference\/whatsnew14.html#explicit-api-mode-for-library-authors\" target=\"_blank\" rel=\"noopener\">\u30e9\u30a4\u30d6\u30e9\u30ea\u4f5c\u6210\u8005\u5411\u3051\u306e Explicit API \u30e2\u30fc\u30c9<\/a><\/li>\n<li><a href=\"https:\/\/kotlinlang.org\/docs\/reference\/whatsnew14.html#mixing-named-and-positional-arguments\" target=\"_blank\" rel=\"noopener\">\u540d\u524d\u4ed8\u304d\u5f15\u6570\u3068\u30dd\u30b8\u30b7\u30e7\u30ca\u30eb\u5f15\u6570\u306e\u6df7\u5728<\/a><\/li>\n<li><a href=\"https:\/\/kotlinlang.org\/docs\/reference\/whatsnew14.html#trailing-comma\" target=\"_blank\" rel=\"noopener\">\u672b\u5c3e\u306e\u30b3\u30f3\u30de<\/a><\/li>\n<li><a href=\"https:\/\/kotlinlang.org\/docs\/reference\/whatsnew14.html#callable-reference-improvements\" target=\"_blank\" rel=\"noopener\">\u547c\u3073\u51fa\u3057\u53ef\u80fd\u53c2\u7167\u306e\u6539\u5584<\/a><\/li>\n<li><a href=\"https:\/\/kotlinlang.org\/docs\/reference\/whatsnew14.html#using-break-and-continue-inside-when-expressions-included-in-loops\" target=\"_blank\" rel=\"noopener\">\u30eb\u30fc\u30d7\u6587\u306e <code>when<\/code> \u5185\u3067\u306e <code>break<\/code> \u3068 <code>continue<\/code> \u306e\u4f7f\u7528<\/a><\/li>\n<\/ul>\n<h2 id=\"library-improvements\">\u30e9\u30a4\u30d6\u30e9\u30ea\u95a2\u9023\u306e\u6539\u5584\u70b9<\/h2>\n<p>\u6a19\u6e96\u30e9\u30a4\u30d6\u30e9\u30ea\u306b\u95a2\u3057\u3066\u306f\u3001\u7570\u306a\u308b\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u9593\u3068\u6f14\u7b97\u305d\u306e\u3082\u306e\u306e\u4e21\u65b9\u306b\u3064\u3044\u3066\u6574\u5408\u6027\u3092\u5411\u4e0a\u3055\u305b\u308b\u3053\u3068\u3092\u4e00\u822c\u7684\u306a\u512a\u5148\u4e8b\u9805\u3068\u3057\u3066\u3044\u307e\u3059\u3002 \u3053\u306e\u30ea\u30ea\u30fc\u30b9\u306e Kotlin \u6a19\u6e96\u30e9\u30a4\u30d6\u30e9\u30ea\u306b\u306f<a href=\"https:\/\/kotlinlang.org\/docs\/reference\/whatsnew14.html#new-functions-for-arrays-and-collections\" target=\"_blank\" rel=\"noopener\">\u65b0\u3057\u3044\u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u578b\u6f14\u7b97\u5b50<\/a>\u3001<a href=\"https:\/\/kotlinlang.org\/docs\/reference\/whatsnew14.html#delegated-properties-improvements\" target=\"_blank\" rel=\"noopener\">\u30c7\u30ea\u30b2\u30fc\u30c8\u578b\u30d7\u30ed\u30d1\u30c6\u30a3\u306e\u6539\u5584<\/a>\u3001<a href=\"https:\/\/kotlinlang.org\/docs\/reference\/whatsnew14.html#arraydeque\" target=\"_blank\" rel=\"noopener\">\u4e21\u7aef\u30ad\u30e5\u30fc <code>ArrayDeque<\/code> \u306e\u5b9f\u88c5<\/a>\u3001\u304a\u3088\u3073<a href=\"https:\/\/kotlinlang.org\/docs\/reference\/whatsnew14.html#standard-library\" target=\"_blank\" rel=\"noopener\">\u305d\u306e\u4ed6<\/a>\u304c\u53d6\u308a\u8fbc\u307e\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u6a19\u6e96\u30e9\u30a4\u30d6\u30e9\u30ea\u306f\u3001Android \u3068 iOS\u3001\u3082\u3057\u304f\u306f JVM \u3068 JS \u306e\u3088\u3046\u306b\u7570\u306a\u308b\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u9593\u3067\u5171\u6709\u3067\u304d\u308b\u300c\u5171\u901a\u300d\u30b3\u30fc\u30c9\u3067\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002 \u73fe\u5728\u3001\u5171\u901a\u30e9\u30a4\u30d6\u30e9\u30ea\u30fc\u306e\u62e1\u5f35\u3068\u3001\u5171\u901a\u30e9\u30a4\u30d6\u30e9\u30ea\u30fc\u3078\u306e\u6a5f\u80fd\u8ffd\u52a0\u307e\u305f\u306f\u4e0d\u8db3\u3057\u3066\u3044\u308b\u6a5f\u80fd\u306e\u79fb\u52d5\u3092\u5f90\u3005\u306b\u884c\u3063\u3066\u3044\u308b\u3068\u3053\u308d\u3067\u3059\u3002<\/p>\n<p>\u307e\u305f\u3001\u4eca\u5f8c\u306f\u5358\u4e00\u306e\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u3092\u30bf\u30fc\u30b2\u30c3\u30c8\u306b\u3059\u308b\u5834\u5408\u3082\u3001\u30de\u30eb\u30c1\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067\u4f5c\u696d\u3059\u308b\u5834\u5408\u3067\u3082\u3001Gradle Kotlin \u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067 <code>stdlib<\/code> \u3078\u306e\u4f9d\u5b58\u95a2\u4fc2\u3092\u5ba3\u8a00\u3059\u308b\u5fc5\u8981\u306f\u306a\u304f\u306a\u308a\u307e\u3057\u305f\u3002 Kotlin 1.4.0 \u4ee5\u964d\u306f\u3001\u3053\u306e\u4f9d\u5b58\u95a2\u4fc2\u304c<a href=\"https:\/\/kotlinlang.org\/docs\/reference\/whatsnew14.html#dependency-on-the-standard-library-added-by-default\" target=\"_blank\" rel=\"noopener\">\u30c7\u30d5\u30a9\u30eb\u30c8\u3067\u8ffd\u52a0\u3055\u308c\u3066\u3044\u307e\u3059<\/a>\u3002<\/p>\n<p>\u6b21\u306e\u3088\u3046\u306a Kotlin \u30a8\u30b3\u30b7\u30b9\u30c6\u30e0\u306e\u4ed6\u306e\u6d3b\u52d5\u306b\u3082\u95a2\u308f\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<ul>\n<li>\u7686\u69d8\u304b\u3089\u306e\u30d5\u30a3\u30fc\u30c9\u30d0\u30c3\u30af\u3092\u5143\u306b <a href=\"https:\/\/github.com\/Kotlin\/kotlinx.coroutines\" target=\"_blank\" rel=\"noopener\">kotlinx.coroutines<\/a> \u3092\u6bb5\u968e\u7684\u306b\u9032\u5316\u3055\u305b\u3066\u3044\u307e\u3059\u3002<\/li>\n<li><a href=\"https:\/\/kotlinlang.org\/docs\/reference\/serialization.html\" target=\"_blank\" rel=\"noopener\">\u76f4\u5217\u5316\u30e9\u30a4\u30d6\u30e9\u30ea<\/a>\u304c\u6210\u719f\u3057\u3064\u3064\u3042\u308a\u307e\u3059\u3002 \u4eca\u56de\u306f <a href=\"https:\/\/github.com\/Kotlin\/kotlinx.serialization\" target=\"_blank\" rel=\"noopener\">kotlinx.serialization<\/a> 1.0.0-RC \u30d0\u30fc\u30b8\u30e7\u30f3\u3092\u30ea\u30ea\u30fc\u30b9\u3057\u307e\u3059\uff01<\/li>\n<li><a href=\"https:\/\/github.com\/Kotlin\/kotlinx-datetime\" target=\"_blank\" rel=\"noopener\">kotlinx-datetime<\/a> \u30e9\u30a4\u30d6\u30e9\u30ea\u3067\u3042\u308b DateTime API \u306e\u30d7\u30ec\u30d3\u30e5\u30fc\u306f\u3059\u3067\u306b\u5b9f\u9a13\u7684\u306a\u72b6\u614b\u3067\u30ea\u30ea\u30fc\u30b9\u3057\u3066\u3044\u307e\u3059\u3002<\/li>\n<\/ul>\n<h2 id=\"kotlin-jvm\">Kotlin\/JVM<\/h2>\n<p>\u901a\u5e38\u306e\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306b\u65b0\u3057\u3044\u30a2\u30eb\u30d5\u30a1\u7248\u306e <a href=\"https:\/\/kotlinlang.org\/docs\/reference\/whatsnew14.html#new-jvm-ir-backend\" target=\"_blank\" rel=\"noopener\">Kotlin\/JVM backend<\/a> \u3092\u305c\u3072\u304a\u8a66\u3057\u3044\u305f\u3060\u304d\u3001\u30d5\u30a3\u30fc\u30c9\u30d0\u30c3\u30af\u3092\u304a\u5bc4\u305b\u304f\u3060\u3055\u3044\uff01 \u30b3\u30f3\u30d1\u30a4\u30e9\u30fc\u306e\u30d1\u30a4\u30d7\u30e9\u30a4\u30f3\u3092\u7d71\u5408\u3059\u308b\u3068\u5171\u306b\u3001\u3053\u306e\u53d6\u308a\u7d44\u307f\u306b\u3088\u3063\u3066 <a href=\"https:\/\/developer.android.com\/jetpack\/compose\" target=\"_blank\" rel=\"noopener\">Jetpack Compose<\/a> \u306e\u3088\u3046\u306a\u30b3\u30f3\u30d1\u30a4\u30e9\u30fc\u62e1\u5f35\u6a5f\u80fd\u3092 Kotlin \u30b3\u30df\u30e5\u30cb\u30c6\u30a3\u306b\u3044\u3061\u65e9\u304f\u63d0\u4f9b\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>Kotlin \/ JVM\u306b\u56fa\u6709\u306e\u8a00\u8a9e\u6a5f\u80fd\uff1a<\/p>\n<ul>\n<li>\u30d0\u30a4\u30c8\u30b3\u30fc\u30c9\u5185\u306e\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306b<a href=\"https:\/\/kotlinlang.org\/docs\/reference\/whatsnew14.html#new-modes-for-generating-default-methods\" target=\"_blank\" rel=\"noopener\">\u30c7\u30d5\u30a9\u30eb\u30c8\u30e1\u30bd\u30c3\u30c9\u3092\u751f\u6210\u3059\u308b\u65b0\u3057\u3044\u5b9f\u9a13\u7684\u306a\u65b9\u6cd5<\/a>\u3092\u8ffd\u52a0\u3057\u307e\u3057\u305f\uff08Java 8 \u30bf\u30fc\u30b2\u30c3\u30c8\u7528\uff09\u3002<\/li>\n<li><a href=\"https:\/\/kotlinlang.org\/docs\/reference\/whatsnew14.html#unified-exception-type-for-null-checks\" target=\"_blank\" rel=\"noopener\"> null\u30c1\u30a7\u30c3\u30af\u306e\u7d71\u4e00\u4f8b\u5916\u30bf\u30a4\u30d7<\/a>\u3092\u5c0e\u5165\u3057\u307e\u3057\u305f\u3002<\/li>\n<li>Kotlin \u306f\u3001JVM \u30d0\u30a4\u30c8\u30b3\u30fc\u30c9\u3067<a href=\"https:\/\/kotlinlang.org\/docs\/reference\/whatsnew14.html#type-annotations-in-the-jvm-bytecode\" target=\"_blank\" rel=\"noopener\">\u578b\u6ce8\u91c8<\/a>\u3092\u751f\u6210\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u3001\u5b9f\u884c\u6642\u306b Java reflection \u3067\u5229\u7528\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3057\u305f\u3002 \u3053\u308c\u306f\u30bf\u30fc\u30b2\u30c3\u30c8\u30d0\u30fc\u30b8\u30e7\u30f38 \u4ee5\u964d\u3067\u5b9f\u884c\u304c\u53ef\u80fd\u3067\u3001\u5b9f\u9a13\u7684\u306a\u6a5f\u80fd\u3068\u3057\u3066\u30ea\u30ea\u30fc\u30b9\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/li>\n<\/ul>\n<h2 id=\"kotlin-js\">Kotlin\/JS<\/h2>\n<p>Kotlin 1.4.0 \u306f\u6570\u3042\u308b\u6a5f\u80fd\u306e\u4e2d\u3067\u3082\u3001\u65b0\u3057\u3044 Gradle DSL \u3068\u65b0\u3057\u3044 Kotlin\/JS \u30b3\u30f3\u30d1\u30a4\u30e9\u30fc\u30d0\u30c3\u30af\u30a8\u30f3\u30c9\u306e\u30a2\u30eb\u30d5\u30a1\u7248\u304c\u642d\u8f09\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u304c\u7279\u5fb4\u3067\u3059\u3002<\/p>\n<ul>\n<li><a href=\"https:\/\/kotlinlang.org\/docs\/reference\/whatsnew14.html#new-gradle-dsl\" target=\"_blank\" rel=\"noopener\">\u65b0\u3057\u3044 Gradle DSL<\/a> \u306f DSL \u304b\u3089\u306e CSS \u3068\u30b9\u30bf\u30a4\u30eb\u30ed\u30fc\u30c0\u30fc\u306e\u69cb\u6210\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u304a\u308a\u3001npm \u4f9d\u5b58\u95a2\u4fc2\u306e\u7ba1\u7406\u306b\u95a2\u3059\u308b\u3055\u307e\u3056\u307e\u306a\u6539\u5584\u304c\u53d6\u308a\u8fbc\u307e\u308c\u3001Dukat \u7d71\u5408\u306e\u7ba1\u7406\u6a5f\u80fd\u304c\u6539\u5584\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/li>\n<li><a href=\"https:\/\/kotlinlang.org\/docs\/reference\/whatsnew14.html#new-js-ir-backend\" target=\"_blank\" rel=\"noopener\">Kotlin\/JS \u30b3\u30f3\u30d1\u30a4\u30e9\u30fc\u306e\u30d0\u30c3\u30af\u30a8\u30f3\u30c9<\/a>\u306f Kotlin\/JS \u306b\u672a\u6765\u7684\u306a\u611f\u899a\u3092\u3082\u305f\u3089\u3057\u307e\u3059\u3002 Kotlin \u30b3\u30fc\u30c9\u304b\u3089\u306e TypeScript \u5b9a\u7fa9\u306e\u81ea\u52d5\u751f\u6210\u3001\u30d0\u30a4\u30ca\u30ea\u3068\u30d0\u30f3\u30c9\u30eb\u306e\u8efd\u91cf\u5316\u3001Kotlin \u306e\u6a5f\u80fd\u3092 JavaScript \u306b\u516c\u958b\u3059\u308b\u6700\u65b0\u306e\u65b9\u6cd5\u306a\u3069\u306e\u6700\u9069\u5316\u3084\u6a5f\u80fd\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002<\/li>\n<\/ul>\n<h2 id=\"kotlin-native\">Kotlin\/Native<\/h2>\n<p>Kotlin\/Native \u306b\u306f\u6b21\u3092\u306f\u3058\u3081\u3068\u3059\u308b\u591a\u6570\u306e\u65b0\u6a5f\u80fd\u3084\u6539\u5584\u304c\u52a0\u3048\u3089\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<ul>\n<li><a href=\"https:\/\/kotlinlang.org\/docs\/reference\/whatsnew14.html#performance-improvements\" target=\"_blank\" rel=\"noopener\">Kotlin\/Native \u306e\u5168\u4f53\u7684\u306a\u30b3\u30f3\u30d1\u30a4\u30eb\u3068\u5b9f\u884c\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u6539\u5584\u3057\u307e\u3057\u305f<\/a>\u3002<\/li>\n<li><a href=\"https:\/\/kotlinlang.org\/docs\/reference\/whatsnew14.html#support-for-kotlins-suspending-functions-in-swift-and-objective-c\" target=\"_blank\" rel=\"noopener\">Kotlin\/Native \u3068 Swift \/ Obj-C \u306e\u76f8\u4e92\u904b\u7528\u6027\u3092\u6539\u5584\u3057\u307e\u3057\u305f<\/a>\u3002<\/li>\n<li><a href=\"https:\/\/kotlinlang.org\/docs\/reference\/whatsnew14.html#simplified-management-of-cocoapods-dependencies\" target=\"_blank\" rel=\"noopener\">CocoaPods \u4f9d\u5b58\u95a2\u4fc2\u306e\u7ba1\u7406\u3092\u7c21\u7565\u5316\u3057\u307e\u3057\u305f<\/a>\u3002<\/li>\n<\/ul>\n<p>\u73fe\u5728\u306e Kotlin\/Native \u306e\u81ea\u52d5\u30e1\u30e2\u30ea\u7ba1\u7406\u306e\u5b9f\u88c5\u306b\u306f\u4e26\u884c\u6027\u306b\u95a2\u3059\u308b\u5236\u9650\u304c\u3042\u308b\u305f\u3081\u3001\u305d\u306e<a href=\"https:\/\/blog.jetbrains.com\/kotlin\/2020\/07\/kotlin-native-memory-management-roadmap\/\">\u4ee3\u308f\u308a\u3068\u306a\u308b\u3082\u306e<\/a>\u3092\u73fe\u5728\u958b\u767a\u4e2d\u3067\u3059\u3002<\/p>\n<p>Kotlin\/Native \u3067\u91cd\u70b9\u3092\u7f6e\u3044\u3066\u3044\u308b\u306e\u306f\u3053\u308c\u3092 <a href=\"https:\/\/www.jetbrains.com\/lp\/mobilecrossplatform\/\" target=\"_blank\" rel=\"noopener\">Kotlin Multiplatform Mobile<\/a> \u3067\u30b7\u30fc\u30e0\u30ec\u30b9\u306b\u3059\u308b\u3053\u3068\u3067\u3059\u304c\u3001\u305d\u308c\u3060\u3051\u306b\u9650\u5b9a\u3057\u3066\u3044\u308b\u308f\u3051\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<h2 id=\"kotlin-multiplatform\">Kotlin Multiplatform<\/h2>\n<p>Kotlin \u3092\u512a\u308c\u305f\u30de\u30eb\u30c1\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u306b\u3059\u308b\u3053\u3068\u306f\u6700\u512a\u5148\u4e8b\u9805\u306e1\u3064\u3067\u3059\u3002 \u79c1\u305f\u3061\u306f KotlinConf \u3067\u3044\u304f\u3064\u304b\u306e\u91cd\u8981\u306a\u6539\u5584\u4e8b\u9805\u3092<a href=\"https:\/\/kotlinconf.com\/2019\/talks\/video\/2019\/130754\/\" target=\"_blank\" rel=\"noopener\">\u7d04\u675f<\/a>\u3057\u307e\u3057\u305f\u304c\u3001\u4ee5\u4e0b\u306e\u5185\u5bb9\u3092\u9054\u6210\u3057\u305f\u3053\u3068\u3092\u3054\u5831\u544a\u3057\u307e\u3059\u3002<\/p>\n<ul>\n<li><a href=\"https:\/\/kotlinlang.org\/docs\/reference\/whatsnew14.html#sharing-code-in-several-targets-with-the-hierarchical-project-structure\" target=\"_blank\" rel=\"noopener\">\u968e\u5c64\u7684\u306a\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u69cb\u9020<\/a>\u306b\u3088\u308a\u3001\u985e\u4f3c\u3057\u305f iOS ARM64 \u30c7\u30d0\u30a4\u30b9\u30bf\u30fc\u30b2\u30c3\u30c8\u3084 x64 \u30b7\u30df\u30e5\u30ec\u30fc\u30bf\u30fc\u30bf\u30fc\u30b2\u30c3\u30c8\u306e\u3088\u3046\u306a\u7279\u5b9a\u306e\u30bf\u30fc\u30b2\u30c3\u30c8\u30b5\u30d6\u30bb\u30c3\u30c8\u9593\u3067\u30b3\u30fc\u30c9\u3092\u5171\u6709\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3057\u305f\u3002<\/li>\n<li><a href=\"https:\/\/kotlinlang.org\/docs\/reference\/whatsnew14.html#leveraging-native-libs-in-the-hierarchical-structure\" target=\"_blank\" rel=\"noopener\">\u8907\u6570\u306e\u30cd\u30a4\u30c6\u30a3\u30d6\u30bf\u30fc\u30b2\u30c3\u30c8\u9593\u3067\u5171\u6709\u3055\u308c\u308b\u5171\u901a\u30b3\u30fc\u30c9\u306e\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u4f9d\u5b58\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u4f7f\u7528<\/a>\u3067\u304d\u307e\u3059\u3002<\/li>\n<li>\u540c\u4e00\u30e9\u30a4\u30d6\u30e9\u30ea\u306e\u5225\u30d0\u30fc\u30b8\u30e7\u30f3\u3078\u306e\u4f9d\u5b58\u95a2\u4fc2\u3092\u5171\u6709\u30bd\u30fc\u30b9\u30bb\u30c3\u30c8\u3068\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u56fa\u6709\u306e\u30bd\u30fc\u30b9\u30bb\u30c3\u30c8\u306b\u6307\u5b9a\u3059\u308b\u4ee3\u308f\u308a\u306b\u3001\u5171\u6709\u30bd\u30fc\u30b9\u30bb\u30c3\u30c8\u306b<a href=\"https:\/\/kotlinlang.org\/docs\/reference\/whatsnew14.html#specifying-dependencies-only-once\" target=\"_blank\" rel=\"noopener\">\u4e00\u5ea6\u3060\u3051\u6307\u5b9a<\/a>\u3067\u304d\u307e\u3059\u3002<\/li>\n<li>\u30de\u30eb\u30c1\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u5171\u6709\u3059\u308b\u305f\u3081\u306b\u5185\u90e8\u3067\u4f7f\u7528\u3055\u308c\u3066\u3044\u308b Kotlin \u30e9\u30a4\u30d6\u30e9\u30ea\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\uff08Klib\uff09\u3092\u7d99\u7d9a\u7684\u306b\u958b\u767a\u3057\u307e\u3059\u3002<\/li>\n<\/ul>\n<p>\u73fe\u5728\u3001iOS \u306e\u30c7\u30d0\u30a4\u30b9\u3084\u30b7\u30df\u30e5\u30ec\u30fc\u30bf\u30fc\u3067 Kotlin \u30b3\u30fc\u30c9\u306e\u5b9f\u884c\u3001\u30c6\u30b9\u30c8\u3001\u30c7\u30d0\u30c3\u30b0\u3092\u5b9f\u73fe\u3059\u308b Android Studio \u7528\u306e\u30d7\u30e9\u30b0\u30a4\u30f3\u3092\u958b\u767a\u3057\u3066\u3044\u307e\u3059\u3002 \u6700\u521d\u306e\u30d1\u30d6\u30ea\u30c3\u30af\u30d7\u30ec\u30d3\u30e5\u30fc\u306f\u307e\u3082\u306a\u304f\u30ea\u30ea\u30fc\u30b9\u4e88\u5b9a\u3067\u3059\u306e\u3067\u3001\u4e5e\u3046\u3054\u671f\u5f85\u304f\u3060\u3055\u3044\u3002<\/p>\n<p>Kotlin \u30b3\u30df\u30e5\u30cb\u30c6\u30a3\u30e1\u30f3\u30d0\u30fc\u306e\u652f\u63f4\u3092\u53d7\u3051\u3066\u4f5c\u6210\u3057\u305f\u3001Kotlin Multiplatform Mobile\uff08KMM\uff09\u30c6\u30af\u30ce\u30ed\u30b8\u30fc\u3092\u4f7f\u7528\u3057\u3066 Android \u3068 iOS \u9593\u3067\u30b3\u30fc\u30c9\u304c\u5171\u6709\u3055\u308c\u308b\u30e2\u30d0\u30a4\u30eb\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u3092\u5177\u4f53\u7684\u306b\u30bf\u30fc\u30b2\u30c3\u30c8\u3068\u3059\u308b\u65b9\u6cd5\u3092\u8aac\u660e\u3059\u308b\u8cc7\u6599\u3092\u307e\u3082\u306a\u304f\u5927\u91cf\u306b\u30ea\u30ea\u30fc\u30b9\u3059\u308b\u4e88\u5b9a\u3067\u3059\u3002<\/p>\n<p>\u73fe\u5728\u306f\u4e3b\u306b\u30e2\u30d0\u30a4\u30eb\u30bf\u30fc\u30b2\u30c3\u30c8\u306b\u6ce8\u529b\u3057\u3066\u3044\u307e\u3059\u304c\u3001Kotlin Multiplatform \u306e Web \u30bf\u30fc\u30b2\u30c3\u30c8\u306f\u3059\u3067\u306b JetBrains \u304c <a href=\"https:\/\/www.jetbrains.com\/space\/\" target=\"_blank\" rel=\"noopener\">JetBrains Space<\/a> \u306e\u30d3\u30eb\u30c9\u3068\u30ea\u30ea\u30fc\u30b9\u306b\u7a4d\u6975\u7684\u306b\u4f7f\u7528\u3057\u3066\u3044\u307e\u3059\u3002 \u30a6\u30a7\u30d6\u306f\u4eca\u5f8c\u3082 Kotlin \u306b\u3068\u3063\u3066\u91cd\u8981\u306a\u6226\u7565\u7684\u6295\u8cc7\u5bfe\u8c61\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n<h2 id=\"more-details\">\u305d\u306e\u4ed6\u306e\u60c5\u5831<\/h2>\n<p>\u65b0\u6a5f\u80fd\u306e\u8a73\u7d30\u306a\u8aac\u660e\u306f <a href=\"https:\/\/kotlinlang.org\/docs\/reference\/whatsnew14.html\" target=\"_blank\" rel=\"noopener\">Kotlin 1.4 \u306e\u65b0\u6a5f\u80fd\u30da\u30fc\u30b8\u3068\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8<\/a>\u3092\u3054\u89a7\u304f\u3060\u3055\u3044\u3002\u307e\u305f\u3001<a href=\"https:\/\/kotlinlang.org\/docs\/reference\/whatsnew14.html#migrating-to-kotlin-140\" target=\"_blank\" rel=\"noopener\">Kotlin 1.4 \u3078\u306e\u79fb\u884c<\/a>\u306b\u95a2\u3059\u308b\u8a73\u7d30\u3082\u304a\u8aad\u307f\u304f\u3060\u3055\u3044\u3002<\/p>\n<p>\u3059\u3079\u3066\u306e\u30e1\u30b8\u30e3\u30fc\u30ea\u30ea\u30fc\u30b9\u3068\u540c\u69d8\u306b\u3001Kotlin 1.4 \u3092\u4ee5\u3066\u3001\u4ee5\u524d\u306b\u767a\u8868\u3057\u305f\u5909\u66f4\u306e\u4f7f\u7528\u5ec3\u6b62\u30b5\u30a4\u30af\u30eb\u304c\u4e00\u90e8\u7d42\u4e86\u3092\u8fce\u3048\u307e\u3059\u3002 \u3059\u3079\u3066\u306e\u30b1\u30fc\u30b9\u306f<a href=\"https:\/\/kotlinlang.org\/docs\/reference\/evolution\/kotlin-evolution.html#decision-making\" target=\"_blank\" rel=\"noopener\">\u8a00\u8a9e\u59d4\u54e1\u4f1a<\/a>\u306b\u3088\u308b\u5341\u5206\u306a\u691c\u8a0e\u306e\u5f8c\u3001\u300c<a href=\"https:\/\/kotlinlang.org\/docs\/reference\/compatibility-guide-14.html\" target=\"_blank\" rel=\"noopener\">Kotlin 1.4 \u306e\u4e92\u63db\u6027\u30ac\u30a4\u30c9<\/a>\u300d\u306b\u8a18\u8f09\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<h2 id=\"how-to-help-us\">Kotlin \u306e\u6539\u5584\u3092\u652f\u63f4\u3059\u308b\u306b\u306f<\/h2>\n<p>IntelliJ IDEA \u3068 Android Studio \u306e Kotlin \u30d7\u30e9\u30b0\u30a4\u30f3\u306f\u3001\u6a5f\u80fd\u306e\u5229\u7528\u72b6\u6cc1\u306b\u95a2\u3059\u308b\u533f\u540d\u306e\u7d71\u8a08\u60c5\u5831\u3092\u53ce\u96c6\u3057\u3066\u3044\u307e\u3059\u3002 \u3053\u306e\u7d71\u8a08\u60c5\u5831\u306e\u53ce\u96c6\u3078\u306e\u3054\u5354\u529b\u3092\u304a\u9858\u3044\u3044\u305f\u3057\u307e\u3059\u3002<\/p>\n<p>\u3053\u306e\u533f\u540d\u30c7\u30fc\u30bf\u306f\u30e6\u30fc\u30b6\u30fc\u3092\u3088\u308a\u6df1\u304f\u7406\u89e3\u3057\u3001\u6b63\u5e38\u306b\u52d5\u4f5c\u3057\u3066\u3044\u308b\u6a5f\u80fd\u3084\u4e0d\u5177\u5408\u3092\u5f15\u304d\u8d77\u3053\u3057\u3066\u3044\u308b\u6a5f\u80fd\u3001\u306a\u3089\u3073\u306b\u6ce8\u529b\u3059\u3079\u304d\u7b87\u6240\u3092\u628a\u63e1\u3059\u308b\u306e\u306b\u5927\u3044\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002 \u7d71\u8a08\u60c5\u5831\u3092\u6709\u52b9\u306b\u3059\u308b\u306b\u306f\u3001<em>Preferences<\/em> \u306b\u79fb\u52d5\u3057\u3066 <a href=\"https:\/\/www.jetbrains.com\/help\/idea\/settings-usage-statistics.html\" target=\"_blank\" rel=\"noopener\"><em>Appearance &amp; Behaviour | System Settings | Data Sharing<\/em><\/a> \u3092\u958b\u304d\u3001<em>Send usage statistics<\/em> \u30c1\u30a7\u30c3\u30af\u30dc\u30c3\u30af\u30b9\u3092\u6709\u52b9\u306b\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<h3 id=\"top-issue-reporters\">Kotlin 1.3 \u4ee5\u964d\u306e\u4e0a\u4f4d\u8ab2\u984c\u5831\u544a\u8005<\/h3>\n<p>YouTrack \u306b\u8ab2\u984c\u3092\u5831\u544a\u3057\u3066\u3053\u306e\u30ea\u30ea\u30fc\u30b9\u306e\u6539\u5584\u306b\u3054\u5354\u529b\u3044\u305f\u3060\u3044\u305f\u30b3\u30df\u30e5\u30cb\u30c6\u30a3\u30e1\u30f3\u30d0\u30fc\u5168\u54e1\u306b\u611f\u8b1d\u3044\u305f\u3057\u307e\u3059\uff01 \u4ee5\u4e0b\u306f\u7279\u306b\u591a\u304f\u306e\u8ab2\u984c\u3092\u5831\u544a\u3044\u305f\u3060\u3044\u305f 20 \u540d\u306e\u65b9\u3067\u3059\u3002\u4ee5\u4e0b\u306e\u30e1\u30f3\u30d0\u30fc\u306e\u7686\u69d8\u306b\u306f\u7279\u306b\u611f\u8b1d\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p><a href=\"https:\/\/youtrack.jetbrains.com\/issues\/KT?q=created:%202018-10-29%20..%20*%20created%20by:%20panell\" target=\"_blank\" rel=\"noopener\">Igor Wojda<\/a>\uff08145 \u4ef6\u306e\u8ab2\u984c\uff09<a href=\"https:\/\/youtrack.jetbrains.com\/issues\/KT?q=created:%202018-10-29%20..%20*%20created%20by:%20louis.cad\" target=\"_blank\" rel=\"noopener\">Louis CAD<\/a>\uff0887 \u4ef6\u306e\u8ab2\u984c\uff09<a href=\"https:\/\/youtrack.jetbrains.com\/issues\/KT?q=created:%202018-10-29%20..%20*%20created%20by:%20fluidsonic\" target=\"_blank\" rel=\"noopener\">Marc Knaup<\/a>\uff0886 \u4ef6\u306e\u8ab2\u984c\uff09<a href=\"https:\/\/youtrack.jetbrains.com\/issues\/KT?q=created:%202018-10-29%20..%20*%20created%20by:%20lblb636\" target=\"_blank\" rel=\"noopener\">AndroidDeveloperLB<\/a>\uff0883 \u4ef6\u306e\u8ab2\u984c\uff09<a href=\"https:\/\/youtrack.jetbrains.com\/issues\/KT?q=created:%202018-10-29%20..%20*%20created%20by:%20Robert_Stoll\" target=\"_blank\" rel=\"noopener\">Robert Stoll<\/a>\uff0868 \u4ef6\u306e\u8ab2\u984c\uff09<a href=\"https:\/\/youtrack.jetbrains.com\/issues\/KT?q=created:%202018-10-29%20..%20*%20created%20by:%20kotlinisland\" target=\"_blank\" rel=\"noopener\">Morgan Bartholomew<\/a>\uff0862 \u4ef6\u306e\u8ab2\u984c\uff09<a href=\"https:\/\/youtrack.jetbrains.com\/issues\/KT?q=created:%202018-10-29%20..%20*%20created%20by:%20Turansky\" target=\"_blank\" rel=\"noopener\">Victor Turansky<\/a>\uff0854 \u4ef6\u306e\u8ab2\u984c\uff09<a href=\"https:\/\/youtrack.jetbrains.com\/issues\/KT?q=created:%202018-10-29%20..%20*%20created%20by:%20him188\" target=\"_blank\" rel=\"noopener\">Guan Tianyi<\/a>\uff0851 \u4ef6\u306e\u8ab2\u984c\uff09<a href=\"https:\/\/youtrack.jetbrains.com\/issues\/KT?q=created:%202018-10-29%20..%20*%20created%20by:%20spierce7.1\" target=\"_blank\" rel=\"noopener\">Scott Pierce<\/a>\uff0838 \u4ef6\u306e\u8ab2\u984c\uff09<a href=\"https:\/\/youtrack.jetbrains.com\/issues\/KT?q=created:%202018-10-29%20..%20*%20created%20by:%20gamalik\" target=\"_blank\" rel=\"noopener\">Andreas Malik<\/a>\uff0837 \u4ef6\u306e\u8ab2\u984c\uff09<a href=\"https:\/\/youtrack.jetbrains.com\/issues\/KT?q=created:%202018-10-29%20..%20*%20created%20by:%20stevenschaefer\" target=\"_blank\" rel=\"noopener\">Steven Sch\u00e4fer<\/a>\uff0837 \u4ef6\u306e\u8ab2\u984c\uff09<a href=\"https:\/\/youtrack.jetbrains.com\/issues\/KT?q=created:%202018-10-29%20..%20*%20created%20by:%20Vampire\" target=\"_blank\" rel=\"noopener\">Bj\u00f6rn Kautler<\/a>\uff0836 \u4ef6\u306e\u8ab2\u984c\uff09<a href=\"https:\/\/youtrack.jetbrains.com\/issues\/KT?q=created:%202018-10-29%20..%20*%20created%20by:%20TWiStErRob\" target=\"_blank\" rel=\"noopener\">R\u00f3bert Papp<\/a>\uff0834 \u4ef6\u306e\u8ab2\u984c\uff09<a href=\"https:\/\/youtrack.jetbrains.com\/issues\/KT?q=created:%202018-10-29%20..%20*%20created%20by:%20t-kameyama\" target=\"_blank\" rel=\"noopener\">Toshiaki Kameyama<\/a>\uff0830 \u4ef6\u306e\u8ab2\u984c\uff09<a href=\"https:\/\/youtrack.jetbrains.com\/issues\/KT?q=created:%202018-10-29%20..%20*%20created%20by:%20nbilyk3\" target=\"_blank\" rel=\"noopener\">Nicholas Bilyk<\/a>\uff0829 \u4ef6\u306e\u8ab2\u984c\uff09<a href=\"https:\/\/youtrack.jetbrains.com\/issues\/KT?q=created:%202018-10-29%20..%20*%20created%20by:%20Michael.Bailey\" target=\"_blank\" rel=\"noopener\">Michael Bailey<\/a>\uff0826 \u4ef6\u306e\u8ab2\u984c\uff09<a href=\"https:\/\/youtrack.jetbrains.com\/issues\/KT?q=created:%202018-10-29%20..%20*%20created%20by:%20Jake.Wharton\" target=\"_blank\" rel=\"noopener\">Jake Wharton<\/a>\uff0825 \u4ef6\u306e\u8ab2\u984c\uff09<a href=\"https:\/\/youtrack.jetbrains.com\/issues\/KT?q=created:%202018-10-29%20..%20*%20created%20by:%20lamba92\" target=\"_blank\" rel=\"noopener\">Lamberto Basti<\/a>\uff0824 \u4ef6\u306e\u8ab2\u984c\uff09<a href=\"https:\/\/youtrack.jetbrains.com\/issues\/KT?q=created:%202018-10-29%20..%20*%20created%20by:%20sergepro\" target=\"_blank\" rel=\"noopener\">Serge Pro<\/a>\uff0823 \u4ef6\u306e\u8ab2\u984c\uff09<a href=\"https:\/\/youtrack.jetbrains.com\/issues\/KT?q=created:%202018-10-29%20..%20*%20created%20by:%20Egorand\" target=\"_blank\" rel=\"noopener\">Egor Andreevici<\/a>\uff0821 \u4ef6\u306e\u8ab2\u984c\uff09<\/p>\n<h2 id=\"start-using\">\u4eca\u3059\u3050 Kotlin 1.4 \u3092\u59cb\u3081\u307e\u3057\u3087\u3046<\/h2>\n<p>\u5f93\u6765\u901a\u308a\u3001<a href=\"http:\/\/play.kotl.in\/\" target=\"_blank\" rel=\"noopener\">play.kotl.in<\/a> \u3067 Kotlin \u3092\u30aa\u30f3\u30e9\u30a4\u30f3\u3067\u8a66\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>Gradle \u3068 Maven \u3067\u306f\u30011.4.0 \u3092\u30b3\u30f3\u30d1\u30a4\u30e9\u30fc\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u306b\u4f7f\u7528\u3057\u3066\u304f\u3060\u3055\u3044\u3002 <a href=\"http:\/\/kotlinlang.org\/docs\/reference\/using-gradle.html\" target=\"_blank\" rel=\"noopener\">Gradle<\/a> \u3068 <a href=\"https:\/\/kotlinlang.org\/docs\/reference\/using-maven.html\" target=\"_blank\" rel=\"noopener\">Maven<\/a> \u306e\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u3092\u3054\u89a7\u304f\u3060\u3055\u3044\u3002<\/p>\n<p>IntelliJ IDEA \u3068 Android Studio \u306f\u3001Kotlin \u30d7\u30e9\u30b0\u30a4\u30f3\u3092\u30d0\u30fc\u30b8\u30e7\u30f31.4.0\u306b\u66f4\u65b0\u3059\u308b\u3088\u3046\u306b\u81ea\u52d5\u7684\u306b<a href=\"https:\/\/kotlinlang.org\/releases.html#updating-to-a-new-release\" target=\"_blank\" rel=\"noopener\">\u63d0\u6848<\/a>\u3057\u307e\u3059\u3002 <a href=\"https:\/\/www.jetbrains.com\/help\/idea\/managing-plugins.html\" target=\"_blank\" rel=\"noopener\">Preferences | Plugins<\/a> \u3092\u958b\u3044\u3066 Kotlin \u30d7\u30e9\u30b0\u30a4\u30f3\u3092\u624b\u52d5\u3067\u66f4\u65b0\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u30b3\u30de\u30f3\u30c9\u30e9\u30a4\u30f3\u30b3\u30f3\u30d1\u30a4\u30e9\u306f\u3001<a href=\"https:\/\/github.com\/JetBrains\/kotlin\/releases\/tag\/v1.4.0\" target=\"_blank\" rel=\"noopener\">GitHub \u30ea\u30ea\u30fc\u30b9\u30da\u30fc\u30b8<\/a>\u304b\u3089\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u3053\u306e\u30ea\u30ea\u30fc\u30b9\u3068\u3068\u3082\u306b\u3001\u4ee5\u4e0b\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u306e\u30e9\u30a4\u30d6\u30e9\u30ea\u304c\u516c\u958b\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<ul>\n<li><a href=\"https:\/\/github.com\/Kotlin\/kotlinx.coroutines\" target=\"_blank\" rel=\"noopener\">kotlinx.coroutines<\/a> \u30d0\u30fc\u30b8\u30e7\u30f3: <code>1.3.9<\/code><\/li>\n<li><a href=\"https:\/\/github.com\/Kotlin\/kotlinx.serialization\" target=\"_blank\" rel=\"noopener\">kotlinx.serialization<\/a> \u30d0\u30fc\u30b8\u30e7\u30f3: <code>1.0.0-RC<\/code><\/li>\n<li><a href=\"https:\/\/ktor.io\/\" target=\"_blank\" rel=\"noopener\">ktor<\/a> \u30d0\u30fc\u30b8\u30e7\u30f3: <code>1.4.0<\/code><\/li>\n<li><a href=\"https:\/\/github.com\/Kotlin\/kotlinx.atomicfu\" target=\"_blank\" rel=\"noopener\">kotlinx.atomicfu<\/a> \u30d0\u30fc\u30b8\u30e7\u30f3: <code>0.14.4<\/code><\/li>\n<li><a href=\"https:\/\/github.com\/Kotlin\/kotlinx.html\" target=\"_blank\" rel=\"noopener\">kotlinx.html<\/a> \u30d0\u30fc\u30b8\u30e7\u30f3: <code>0.7.2<\/code><\/li>\n<li><a href=\"https:\/\/github.com\/Kotlin\/kotlinx-nodejs\" target=\"_blank\" rel=\"noopener\">kotlinx-nodejs<\/a> \u30d0\u30fc\u30b8\u30e7\u30f3: <code>0.0.6<\/code><\/li>\n<\/ul>\n<p><code> kotlin-wrappers<\/code> \u304b\u3089\u306e\u30e9\u30a4\u30d6\u30e9\u30ea\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\uff08<code>kotlin-react <\/code> \u306a\u3069\uff09\u306f\u3001\u5bfe\u5fdc\u3059\u308b<a href=\"https:\/\/github.com\/JetBrains\/kotlin-wrappers\" target=\"_blank\" rel=\"noopener\">\u30ea\u30dd\u30b8\u30c8\u30ea<\/a>\u3067\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u30b3\u30fc\u30c9\u30cf\u30a4\u30e9\u30a4\u30c8\u6a5f\u80fd\u306e\u9ad8\u901f\u5316\u3092\u542b\u3080\u3053\u308c\u3089\u306e\u6700\u65b0\u306e\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u3092\u4f7f\u3046\u306b\u306f\u3001IntelliJ IDEA 2020.1\u4ee5\u4e0a\u3001\u307e\u305f\u306f Android Studio 4.1\u4ee5\u4e0a\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n<p>\u3053\u306e\u65b0\u30ea\u30ea\u30fc\u30b9\u3067\u554f\u984c\u304c\u767a\u751f\u3057\u305f\u5834\u5408\u306f\u3001<a href=\"http:\/\/kotlinlang.slack.com\/\" target=\"_blank\" rel=\"noopener\">Slack<\/a> \uff08<a href=\"http:\/\/slack.kotlinlang.org\/\" target=\"_blank\" rel=\"noopener\">\u3053\u3061\u3089<\/a>\u3067\u62db\u5f85\u3092\u53d7\u3051\u3066\u304f\u3060\u3055\u3044\uff09\u3067\u652f\u63f4\u3092\u6c42\u3081\u308b\u304b\u3001<a href=\"https:\/\/youtrack.jetbrains.com\/issues\/KT\" target=\"_blank\" rel=\"noopener\">YouTrack<\/a> \u3067\u8ab2\u984c\u3092\u5831\u544a\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<h2 id=\"thank-you\">\u304a\u308f\u308a\u306b\u3000<\/h2>\n<p>Kotlin EAP \u3068\u5b9f\u9a13\u7684\u6a5f\u80fd\u3092\u304a\u8a66\u3057\u3044\u305f\u3060\u304d\u3001\u30d5\u30a3\u30fc\u30c9\u30d0\u30c3\u30af\u3092\u3054\u63d0\u4f9b\u3044\u305f\u3060\u3044\u305f\u7686\u69d8\u306b\u5fc3\u304b\u3089\u611f\u8b1d\u7533\u3057\u4e0a\u3052\u307e\u3059\u3002 \u5f53\u793e\u306f\u7686\u69d8\u3068\u4e00\u7dd2\u306b Kotlin \u8a00\u8a9e\u3092\u958b\u767a\u3057\u3001\u7686\u69d8\u304b\u3089\u306e\u8cb4\u91cd\u306a\u3054\u610f\u898b\u306b\u57fa\u3065\u3044\u3066\u591a\u304f\u306e\u8a2d\u8a08\u4e0a\u306e\u6c7a\u5b9a\u3092\u4e0b\u3057\u3066\u3044\u307e\u3059\u3002 \u30b3\u30df\u30e5\u30cb\u30c6\u30a3\u3067\u3053\u306e\u8fc5\u901f\u304b\u3064\u52b9\u679c\u7684\u306a\u30d5\u30a3\u30fc\u30c9\u30d0\u30c3\u30af\u306e\u30b5\u30a4\u30af\u30eb\u3092\u7dad\u6301\u3059\u308b\u3053\u3068\u306f\u3001Kotlin\u3092\u53ef\u80fd\u306a\u9650\u308a\u6700\u9ad8\u306e\u8a00\u8a9e\u306b\u3059\u308b\u305f\u3081\u306b\u975e\u5e38\u306b\u91cd\u8981\u3067\u3059\uff01<\/p>\n<p>\u3053\u306e\u30ea\u30ea\u30fc\u30b9\u306b\u542b\u3081\u3089\u308c\u305f\u30d7\u30eb\u30ea\u30af\u30a8\u30b9\u30c8\u306f\u3001\u6b21\u306e\u5916\u90e8\u8ca2\u732e\u8005\u304b\u3089\u3044\u305f\u3060\u3044\u305f\u3082\u306e\u3067\u3059\u3002\u3054\u5354\u529b\u3044\u305f\u3060\u304d\u3042\u308a\u304c\u3068\u3046\u3054\u3056\u3044\u307e\u3057\u305f\u3002 \u7686\u69d8\u306e\u304a\u304b\u3052\u3067\u3053\u306e\u30ea\u30ea\u30fc\u30b9\u3092\u5b9f\u73fe\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3057\u305f\uff01<\/p>\n<p>Kotlin\u3092\u4f7f\u3063\u3066\u975e\u5e38\u306b\u591a\u304f\u306e\u7d20\u6674\u3089\u3057\u3044\u4f5c\u54c1\u3092\u4f5c\u6210\u3057\u3066\u3044\u305f\u3060\u3044\u305f\u30b3\u30df\u30e5\u30cb\u30c6\u30a3\u30e1\u30f3\u30d0\u30fc\u306e\u7686\u69d8\u306b\u5fc3\u304b\u3089\u611f\u8b1d\u7533\u3057\u4e0a\u3052\u307e\u3059\u3002 <em>Kotlin 1.4: One for all!<\/em><\/p>\n","protected":false},"author":811,"featured_media":67100,"comment_status":"closed","ping_status":"closed","template":"","categories":[],"tags":[],"cross-post-tag":[],"acf":[],"_links":{"self":[{"href":"https:\/\/blog.jetbrains.com\/ja\/wp-json\/wp\/v2\/kotlin\/67085"}],"collection":[{"href":"https:\/\/blog.jetbrains.com\/ja\/wp-json\/wp\/v2\/kotlin"}],"about":[{"href":"https:\/\/blog.jetbrains.com\/ja\/wp-json\/wp\/v2\/types\/kotlin"}],"author":[{"embeddable":true,"href":"https:\/\/blog.jetbrains.com\/ja\/wp-json\/wp\/v2\/users\/811"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.jetbrains.com\/ja\/wp-json\/wp\/v2\/comments?post=67085"}],"version-history":[{"count":2,"href":"https:\/\/blog.jetbrains.com\/ja\/wp-json\/wp\/v2\/kotlin\/67085\/revisions"}],"predecessor-version":[{"id":67172,"href":"https:\/\/blog.jetbrains.com\/ja\/wp-json\/wp\/v2\/kotlin\/67085\/revisions\/67172"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/blog.jetbrains.com\/ja\/wp-json\/wp\/v2\/media\/67100"}],"wp:attachment":[{"href":"https:\/\/blog.jetbrains.com\/ja\/wp-json\/wp\/v2\/media?parent=67085"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.jetbrains.com\/ja\/wp-json\/wp\/v2\/categories?post=67085"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.jetbrains.com\/ja\/wp-json\/wp\/v2\/tags?post=67085"},{"taxonomy":"cross-post-tag","embeddable":true,"href":"https:\/\/blog.jetbrains.com\/ja\/wp-json\/wp\/v2\/cross-post-tag?post=67085"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}