{"id":254670,"date":"2022-04-04T12:09:26","date_gmt":"2022-04-04T11:09:26","guid":{"rendered":"https:\/\/blog.jetbrains.com\/kotlin\/2022\/04\/kotlin-1-6-20-released\/"},"modified":"2025-09-18T13:21:07","modified_gmt":"2025-09-18T12:21:07","slug":"kotlin-1-6-20-released","status":"publish","type":"kotlin","link":"https:\/\/blog.jetbrains.com\/ja\/kotlin\/2022\/04\/kotlin-1-6-20-released\/","title":{"rendered":"Kotlin 1.6.20 \u304c\u30ea\u30ea\u30fc\u30b9\u3055\u308c\u307e\u3057\u305f"},"content":{"rendered":"<nav><span style=\"font-size: revert;\">Kotlin 1.6.20 \u304c\u6b63\u5f0f\u306b\u30ea\u30ea\u30fc\u30b9\u3055\u308c\u307e\u3057\u305f\u3002 \u4eca\u5f8c\u306e\u8a00\u8a9e\u6a5f\u80fd\u306e\u30d7\u30ec\u30d3\u30e5\u30fc\u3092\u63d0\u4f9b\u3057\u3001\u30de\u30eb\u30c1\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067\u968e\u5c64\u69cb\u9020\u3092\u30c7\u30d5\u30a9\u30eb\u30c8\u306b\u3057\u305f\u307b\u304b\u3001JVM\u3001JS\u3001Native \u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u6539\u5584\u3057\u3066\u3044\u307e\u3059\u3002<\/span><\/nav>\n<p>\u3053\u306e\u30d6\u30ed\u30b0\u8a18\u4e8b\u3067\u306f\u3001\u4ee5\u4e0b\u306e\u6539\u5584\u70b9\u306b\u95a2\u3059\u308b\u6982\u8981\u3068<a title=\"#complete-list-of-improvements\" href=\"#complete-list-of-improvements\">\u305d\u308c\u4ee5\u5916\u306e\u3059\u3079\u3066\u306e\u6f38\u9032\u7684\u306a\u5909\u66f4<\/a>\u3092\u3054\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n<ul>\n<li><a title=\"#prototype-of-context-receivers-for-kotlin-jvm\" href=\"#prototype-of-context-receivers-for-kotlin-jvm\">\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u30ec\u30b7\u30fc\u30d0\u30fc\u306e\u30d7\u30ed\u30c8\u30bf\u30a4\u30d7\u5b9f\u88c5<\/a>\u306b\u3088\u308a\u3001Kotlin \/ JVM \u3067\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u4f9d\u5b58\u306e\u5ba3\u8a00\u3092\u65b0\u305f\u306b\u30b5\u30dd\u30fc\u30c8\u3002<\/li>\n<li><a title=\"#definitely-non-nullable-types\" href=\"#definitely-non-nullable-types\">\u78ba\u5b9f\u306b\u975e nullable \u306a\u578b<\/a>\u306b\u3088\u308b Java \u306e\u30b8\u30a7\u30cd\u30ea\u30c3\u30af\u30af\u30e9\u30b9\u3068\u30b8\u30a7\u30cd\u30ea\u30c3\u30af\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e\u76f8\u4e92\u904b\u7528\u6027\u6539\u5584\u3002<\/li>\n<li><a title=\"#support-for-parallel-compilation-of-a-single-module-in-the-JVM-backend\" href=\"#support-for-parallel-compilation-of-a-single-module-in-the-JVM-backend\">JVM IR \u30d0\u30c3\u30af\u30a8\u30f3\u30c9\u3067\u5358\u4e00\u30e2\u30b8\u30e5\u30fc\u30eb\u3092\u4e26\u5217\u30b3\u30f3\u30d1\u30a4\u30eb<\/a>\u3059\u308b\u3053\u3068\u306b\u3088\u308a\u3001\u30d3\u30eb\u30c9\u306e\u6240\u8981\u6642\u9593\u3092\u77ed\u7e2e\u3002<\/li>\n<li><a href=\"#incremental-compilation-for-development-binaries-with-kotlin-js-ir-compiler\">Kotlin \/ JS IR \u3067\u30a4\u30f3\u30af\u30ea\u30e1\u30f3\u30bf\u30eb\u30b3\u30f3\u30d1\u30a4\u30eb\u3092\u5b9f\u884c<\/a>\u3059\u308b\u3053\u3068\u3067\u958b\u767a\u4f53\u9a13\u3092\u5408\u7406\u5316\u3002<\/li>\n<li><a href=\"#kotlin-native-performance-improvements\">Kotlin \/ Native \u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u6539\u5584<\/a>\u3002<\/li>\n<li><a href=\"#hierarchical-structure-support-for-multiplatform-projects\">\u30de\u30eb\u30c1\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306e\u968e\u5c64\u69cb\u9020<\/a>\u3092\u30b5\u30dd\u30fc\u30c8\u3059\u308b\u3053\u3068\u306b\u3088\u308a\u3001\u30b3\u30fc\u30c9\u3092\u7c21\u5358\u306b\u5171\u6709\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u307e\u3057\u305f\u3002<\/li>\n<\/ul>\n<p><!--more--><\/p>\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\">\n<div class=\"wp-block-embed__wrapper\"><iframe loading=\"lazy\" title=\"Kotlin 1.6.20 \u306e\u65b0\u6a5f\u80fd\" src=\"https:\/\/www.youtube.com\/embed\/8F19ds109-o?feature=oembed\" width=\"500\" height=\"281\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><\/iframe><\/div>\n<\/figure>\n<hr class=\"wp-block-separator\">\n<h1 id=\"how-to-update\">\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u65b9\u6cd5<\/h1>\n<p><a href=\"https:\/\/www.jetbrains.com\/idea\/download\/\" target=\"_blank\" rel=\"noopener\">IntelliJ IDEA<\/a> \u307e\u305f\u306f <a href=\"https:\/\/developer.android.com\/studio\" target=\"_blank\" rel=\"noopener\">Android Studio<\/a> \u3092\u4f7f\u7528\u3057\u3066\u3044\u308b\u5834\u5408\u3001\u65b0\u3057\u3044 Kotlin \u304c\u30ea\u30ea\u30fc\u30b9\u3055\u308c\u305f\u3089\u81ea\u52d5\u7684\u306b\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u3059\u308b\u30aa\u30d7\u30b7\u30e7\u30f3\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p align=\"center\"><a class=\"ek-link jb-download-button\" title=\"Kotlin 1.6.20 \u3078\u306e\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\" href=\"#how-to-install\">Kotlin 1.6.20 \u3078\u306e\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8<\/a><\/p>\n<h1 id=\"major-updates\">\u30e1\u30b8\u30e3\u30fc\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8<\/h1>\n<h2 id=\"prototype-of-context-receivers-for-kotlin-jvm\"><span id=\"Prototype_of_context_receivers_for_KotlinJVM\" class=\"ez-toc-section\"><\/span>Kotlin \/ JVM \u306b\u304a\u3051\u308b\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u30ec\u30b7\u30fc\u30d0\u30fc\u306e\u30d7\u30ed\u30c8\u30bf\u30a4\u30d7<\/h2>\n<p>Kotlin 1.6.20 \u304b\u3089\u306f\u30ec\u30b7\u30fc\u30d0\u30fc\u306e\u6570\u304c 1 \u3064\u306b\u5236\u9650\u3055\u308c\u306a\u304f\u306a\u308a\u307e\u3057\u305f\u3002 \u8907\u6570\u500b\u5fc5\u8981\u3067\u3042\u308c\u3070\u3001\u95a2\u6570\u3001\u30d7\u30ed\u30d1\u30c6\u30a3\u3001\u30af\u30e9\u30b9\u306e\u5ba3\u8a00\u306b\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u30ec\u30b7\u30fc\u30d0\u30fc\u3092\u8ffd\u52a0\u3059\u308b\u3053\u3068\u306b\u3088\u308a\u3001\u305d\u308c\u305e\u308c\u3092\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u4f9d\u5b58 (<em>\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u5bfe\u5fdc<\/em>) \u306e\u5ba3\u8a00\u306b\u3067\u304d\u307e\u3059\u3002 \u4ee5\u4e0b\u306f\u3001\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u5bfe\u5fdc\u5ba3\u8a00\u306e\u6319\u52d5\u3067\u3059\u3002<\/p>\n<ul>\n<li>\u5ba3\u8a00\u3055\u308c\u3066\u3044\u308b\u3059\u3079\u3066\u306e\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u30ec\u30b7\u30fc\u30d0\u30fc\u3092\u547c\u3073\u51fa\u3057\u5074\u306e\u30b9\u30b3\u30fc\u30d7\u5185\u306b\u6697\u9ed9\u7684\u306a\u30ec\u30b7\u30fc\u30d0\u30fc\u3068\u3057\u3066\u8a18\u8ff0\u3059\u308b\u3053\u3068\u3092\u8981\u6c42\u3059\u308b\u3002<\/li>\n<li>\u5ba3\u8a00\u3055\u308c\u3066\u3044\u308b\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u30ec\u30b7\u30fc\u30d0\u30fc\u3092\u305d\u306e\u672c\u4f53\u306e\u30b9\u30b3\u30fc\u30d7\u306b\u9ed9\u793a\u7684\u306a\u30ec\u30b7\u30fc\u30d0\u30fc\u3068\u3057\u3066\u53d6\u308a\u5165\u308c\u308b\u3002<\/li>\n<\/ul>\n<pre class=\"kotlin-code\" style=\"visibility: hidden; padding: 36px 0;\" data-highlight-only=\"true\">&lt;br \/&gt;\ninterface LoggingContext {&lt;br \/&gt;\n    val log: Logger \/\/ This context provides a reference to a logger&lt;br \/&gt;\n}&lt;\/p&gt;\n&lt;p&gt;context(LoggingContext)&lt;br \/&gt;\nfun startBusinessOperation() {&lt;br \/&gt;\n    \/\/ You can access the log property since LoggingContext is an implicit receiver&lt;br \/&gt;\n    log.info(\"Operation has started\")&lt;br \/&gt;\n}&lt;\/p&gt;\n&lt;p&gt;fun test(loggingContext: LoggingContext) {&lt;br \/&gt;\n    with(loggingContext) {&lt;br \/&gt;\n        \/\/ You need to have LoggingContext in a scope as an implicit receiver&lt;br \/&gt;\n        \/\/ to call startBusinessOperation()&lt;br \/&gt;\n        startBusinessOperation()&lt;br \/&gt;\n    }&lt;br \/&gt;\n}&lt;br \/&gt;\n<\/pre>\n<p>\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u30ec\u30b7\u30fc\u30d0\u30fc\u3092\u6709\u52b9\u306b\u3059\u308b\u306b\u306f\u3001\u30b3\u30f3\u30d1\u30a4\u30e9\u30fc\u30aa\u30d7\u30b7\u30e7\u30f3 <code>-Xcontext-receivers<\/code> \u3092\u4f7f\u7528\u3057\u307e\u3059\u3002 \u6a5f\u80fd\u3068\u69cb\u6587\u306e\u8a73\u7d30\u306f\u3001<a href=\"https:\/\/github.com\/Kotlin\/KEEP\/blob\/master\/proposals\/context-receivers.md#detailed-design\" target=\"_blank\" rel=\"noopener\">KEEP<\/a> \u3092\u53c2\u7167\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<p>\u305f\u3060\u3057\u3001<strong>\u30d7\u30ed\u30c8\u30bf\u30a4\u30d7<\/strong>\u5b9f\u88c5\u3067\u3042\u308b\u3053\u3068\u306b\u6ce8\u610f\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<ul>\n<li><code>-Xcontext-receivers<\/code> \u3092\u6709\u52b9\u306b\u3059\u308b\u3068\u3001\u30d7\u30ed\u30c0\u30af\u30b7\u30e7\u30f3\u30b3\u30fc\u30c9\u3067\u306f\u4f7f\u7528\u3067\u304d\u306a\u3044\u30ea\u30ea\u30fc\u30b9\u524d\u306e\u30d0\u30a4\u30ca\u30ea\u304c\u30b3\u30f3\u30d1\u30a4\u30e9\u30fc\u306b\u3088\u3063\u3066\u751f\u6210\u3055\u308c\u307e\u3059\u3002<\/li>\n<li>\u73fe\u5728\u3001IDE \u3067\u306f\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u30ec\u30b7\u30fc\u30d0\u30fc\u3092\u6700\u4f4e\u9650\u306e\u30ec\u30d9\u30eb\u3067\u3057\u304b\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u307e\u305b\u3093\u3002<\/li>\n<\/ul>\n<h2 id=\"definitely-non-nullable-types\"><span id=\"Definitely_non-nullable_types\" class=\"ez-toc-section\"><\/span>\u78ba\u5b9f\u306b\u975e nullable \u306a\u578b<\/h2>\n<p>Java \u306e\u30b8\u30a7\u30cd\u30ea\u30c3\u30af\u30af\u30e9\u30b9\u3068\u30b8\u30a7\u30cd\u30ea\u30c3\u30af\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u62e1\u5f35\u3059\u308b\u969b\u306e\u76f8\u4e92\u904b\u7528\u6027\u3092\u6539\u5584\u3059\u308b\u305f\u3081\u3001Kotlin 1.6.20 \u3067\u306f <code>T &amp; Any<\/code> \u3068\u3044\u3046\u65b0\u3057\u3044\u69cb\u9020\u3092\u4f7f\u7528\u3057\u3066\u30b8\u30a7\u30cd\u30ea\u30c3\u30af\u578b\u30d1\u30e9\u30e1\u30fc\u30bf\u30fc\u3092\u305d\u306e\u4f7f\u7528\u7b87\u6240\u3067\u78ba\u5b9f\u306b\u975e nullable \u306b\u6307\u5b9a\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u3066\u3044\u307e\u3059\u3002 \u3053\u306e\u69cb\u6587\u306f<a href=\"https:\/\/en.wikipedia.org\/wiki\/Intersection_type\" target=\"_blank\" rel=\"noopener\">\u4ea4\u5dee\u578b<\/a>\u306e\u8868\u8a18\u6cd5\u304c\u57fa\u306b\u306a\u3063\u3066\u304a\u308a\u3001\u73fe\u6642\u70b9\u3067\u306f <code>&amp;<\/code> \u306e\u5de6\u5074\u306b nullable \u306e\u4e0a\u9650\u3001\u53f3\u5074\u306b\u975e nullable \u306e <code>Any<\/code> \u3092\u8a18\u8ff0\u3057\u305f\u578b\u30d1\u30e9\u30e1\u30fc\u30bf\u30fc\u306b\u9650\u5b9a\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<pre class=\"kotlin-code\" style=\"visibility: hidden; padding: 36px 0;\" data-highlight-only=\"true\">&lt;br \/&gt;\nfun &lt;T&gt; elvisLike(x: T, y: T &amp; Any): T &amp; Any = x ?: y&lt;\/p&gt;\n&lt;p&gt;fun main() {&lt;br \/&gt;\n   \/\/ OK&lt;br \/&gt;\n   elvisLike&lt;String&gt;(\"\", \"\").length&lt;br \/&gt;\n   \/\/ Error: 'null' cannot be a value of a non-null type&lt;br \/&gt;\n   elvisLike&lt;String&gt;(\"\", null).length&lt;\/p&gt;\n&lt;p&gt;   \/\/ OK&lt;br \/&gt;\n   elvisLike&lt;String?&gt;(null, \"\").length&lt;br \/&gt;\n   \/\/ Error: 'null' cannot be a value of a non-null type&lt;br \/&gt;\n   elvisLike&lt;String?&gt;(null, null).length&lt;br \/&gt;\n}&lt;br \/&gt;\n<\/pre>\n<p>\u3053\u306e\u6a5f\u80fd\u3092\u6709\u52b9\u306b\u3059\u308b\u306b\u306f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u30b3\u30fc\u30c9\u3067\u8a00\u8a9e\u30d0\u30fc\u30b8\u30e7\u30f3\u3092 1.7 \u306b\u8a2d\u5b9a\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"kotlin-code\" style=\"visibility: hidden; padding: 36px 0;\" data-highlight-only=\"true\">&lt;br \/&gt;\nkotlin {&lt;br \/&gt;\n   sourceSets.all {&lt;br \/&gt;\n       languageSettings.apply {&lt;br \/&gt;\n           languageVersion = \"1.7\"&lt;br \/&gt;\n       }&lt;br \/&gt;\n   }&lt;br \/&gt;\n}&lt;br \/&gt;\n<\/pre>\n<p>\u78ba\u5b9f\u306b\u975e nullable \u306a\u578b\u306e\u8a73\u7d30\u306f\u3001<a href=\"https:\/\/github.com\/Kotlin\/KEEP\/blob\/c72601cf35c1e95a541bb4b230edb474a6d1d1a8\/proposals\/definitely-non-nullable-types.md\" target=\"_blank\" rel=\"noopener\">KEEP<\/a> \u3092\u53c2\u7167\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<p>\u305f\u3060\u3057\u3001\u78ba\u5b9f\u306b\u975e nullable \u306a\u578b\u306f<strong>\u30d9\u30fc\u30bf\u7248<\/strong>\u306e\u6a5f\u80fd\u3067\u3059\u3002 \u307b\u307c\u5b89\u5b9a\u3057\u3066\u3044\u308b\u6a5f\u80fd\u3067\u3059\u304c\u3001\u5c06\u6765\u7684\u306b\u306f\u79fb\u884c\u624b\u7d9a\u304d\u304c\u5fc5\u8981\u306b\u306a\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002 \u30e6\u30fc\u30b6\u30fc\u306e\u7686\u3055\u3093\u306b\u52a0\u3048\u3066\u3044\u305f\u3060\u304f\u5909\u66f4\u306e\u91cf\u306f\u3001\u6700\u5c0f\u9650\u306b\u6291\u3048\u308b\u3088\u3046\u52aa\u529b\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n<h2 id=\"support-for-parallel-compilation-of-a-single-module-in-the-JVM-backend\"><span id=\"Support_for_parallel_compilation_of_a_single_module_in_the_JVM_backend\" class=\"ez-toc-section\"><\/span>JMV \u30d0\u30c3\u30af\u30a8\u30f3\u30c9\u306b\u304a\u3051\u308b\u5358\u4e00\u30e2\u30b8\u30e5\u30fc\u30eb\u306e\u4e26\u5217\u30b3\u30f3\u30d1\u30a4\u30eb\u306b\u5bfe\u3059\u308b\u30b5\u30dd\u30fc\u30c8<\/h2>\n<p>Kotlin 1.6.20 \u3067\u306f\u3001\u30e2\u30b8\u30e5\u30fc\u30eb\u5185\u306e\u3059\u3079\u3066\u306e\u30d5\u30a1\u30a4\u30eb\u3092\u4e26\u5217\u30b3\u30f3\u30d1\u30a4\u30eb\u3059\u308b\u5b9f\u9a13\u7684\u306a JVM IR \u30d0\u30c3\u30af\u30a8\u30f3\u30c9\u30e2\u30fc\u30c9\u3092\u8ffd\u52a0\u3057\u307e\u3057\u305f\u3002 \u4e26\u5217\u30b3\u30f3\u30d1\u30a4\u30eb\u3092\u5b9f\u884c\u3059\u308b\u3068\u3001\u30b3\u30f3\u30d1\u30a4\u30eb\u306e\u6240\u8981\u6642\u9593\u3092\u6700\u5927\u3067 15% \u3082\u524a\u6e1b\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u5b9f\u9a13\u7684\u306a\u4e26\u5217\u30d0\u30c3\u30af\u30a8\u30f3\u30c9\u30e2\u30fc\u30c9\u3092\u6709\u52b9\u306b\u3059\u308b\u306b\u306f\u3001<a href=\"https:\/\/kotlinlang.org\/docs\/compiler-reference.html#compiler-options\" target=\"_blank\" rel=\"noopener\">\u30b3\u30f3\u30d1\u30a4\u30e9\u30fc\u30aa\u30d7\u30b7\u30e7\u30f3<\/a> <code>-Xbackend-threads<\/code> \u3092\u4f7f\u7528\u3057\u307e\u3059\u3002 \u3053\u306e\u30aa\u30d7\u30b7\u30e7\u30f3\u306b\u306f\u3001\u4ee5\u4e0b\u306e\u5f15\u6570\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002<\/p>\n<ul>\n<li><code>N<\/code> \u306f\u4f7f\u7528\u3059\u308b\u30b9\u30ec\u30c3\u30c9\u306e\u6570\u3067\u3059\u3002 \u3053\u306e\u5024\u304c CPU \u30b3\u30a2\u306e\u6570\u3092\u8d85\u3048\u308b\u3068\u30b9\u30ec\u30c3\u30c9\u9593\u3067\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u5207\u308a\u66ff\u3048\u304c\u767a\u751f\u3059\u308b\u305f\u3081\u3001\u4e26\u5217\u51e6\u7406\u306e\u52b9\u679c\u304c\u5931\u308f\u308c\u308b\u306e\u3067\u6ce8\u610f\u304c\u5fc5\u8981\u3067\u3059\u3002<\/li>\n<li>\u5404 CPU \u30b3\u30a2\u306b 1 \u3064\u306e\u30b9\u30ec\u30c3\u30c9\u3092\u4f7f\u3046\u5834\u5408\u306f\u3001<code>0<\/code> \u3092\u4f7f\u7528\u3057\u307e\u3059\u3002<\/li>\n<\/ul>\n<p><a href=\"https:\/\/kotlinlang.org\/docs\/gradle.html\" target=\"_blank\" rel=\"noopener\">Gradle<\/a> \u3067\u306f\u8907\u6570\u306e\u30bf\u30b9\u30af\u3092\u4e26\u5217\u51e6\u7406\u3067\u304d\u307e\u3059\u304c\u3001Gradle \u306e\u8996\u70b9\u304b\u3089\u898b\u305f\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\uff08\u307e\u305f\u306f\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306e\u4e3b\u8981\u306a\u90e8\u5206\uff09\u304c 1 \u3064\u306e\u5927\u304d\u306a\u30bf\u30b9\u30af\u3067\u3042\u308b\u5834\u5408\u3001\u3053\u306e\u7a2e\u306e\u4e26\u5217\u51e6\u7406\u306f\u3042\u307e\u308a\u52b9\u679c\u3092\u767a\u63ee\u3057\u307e\u305b\u3093\u3002 \u5de8\u5927\u306a\u30e2\u30b8\u30e5\u30fc\u30eb\u304c\u3042\u308b\u5834\u5408\u306f\u3001\u4e26\u5217\u30b3\u30f3\u30d1\u30a4\u30eb\u3092\u5229\u7528\u3059\u308b\u3068\u30b3\u30f3\u30d1\u30a4\u30eb\u901f\u5ea6\u304c\u5411\u4e0a\u3057\u307e\u3059\u3002 \u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u304c\u6570\u591a\u304f\u306e\u5c0f\u3055\u306a\u30e2\u30b8\u30e5\u30fc\u30eb\u3067\u69cb\u6210\u3055\u308c\u3066\u304a\u308a\u3001\u304b\u3064 Gradle \u306b\u3088\u3063\u3066\u4e26\u5217\u51e6\u7406\u3055\u308c\u308b\u30d3\u30eb\u30c9\u304c\u3042\u308b\u5834\u5408\u306b\u4e26\u5217\u51e6\u7406\u306e\u30ec\u30a4\u30e4\u30fc\u3092\u3055\u3089\u306b\u8ffd\u52a0\u3059\u308b\u3068\u3001\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u306e\u5207\u308a\u66ff\u3048\u304c\u539f\u56e0\u3067\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u304c\u640d\u306a\u308f\u308c\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u4e26\u5217\u30b3\u30f3\u30d1\u30a4\u30eb\u306b\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u5236\u9650\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<ul>\n<li><a href=\"https:\/\/kotlinlang.org\/docs\/kapt.html\" target=\"_blank\" rel=\"noopener\">kapt<\/a> \u3067\u306f\u6a5f\u80fd\u3057\u306a\u3044\u3002IR \u30d0\u30c3\u30af\u30a8\u30f3\u30c9\u304c\u7121\u52b9\u5316\u3055\u308c\u308b\u305f\u3081\u3067\u3059\u3002<\/li>\n<li>\u8a2d\u8a08\u4e0a\u3001\u3088\u308a\u591a\u304f\u306e JVM \u30d2\u30fc\u30d7\u304c\u5fc5\u8981\u3067\u3059\u3002 \u30d2\u30fc\u30d7\u306e\u91cf\u306f\u30b9\u30ec\u30c3\u30c9\u306e\u6570\u306b\u6bd4\u4f8b\u3057\u307e\u3059\u3002<\/li>\n<\/ul>\n<h2 id=\"incremental-compilation-for-development-binaries-with-kotlin-js-ir-compiler\"><span id=\"Incremental_compilation_for_development_binaries_with_KotlinJS_IR_compiler\" class=\"ez-toc-section\"><\/span>Kotlin\/JS \u306e IR \u30b3\u30f3\u30d1\u30a4\u30e9\u30fc\u3092\u4f7f\u3063\u305f\u958b\u767a\u7528\u30d0\u30a4\u30ca\u30ea\u306e\u30a4\u30f3\u30af\u30ea\u30e1\u30f3\u30bf\u30eb\u30b3\u30f3\u30d1\u30a4\u30eb<\/h2>\n<p>IR \u30b3\u30f3\u30d1\u30a4\u30e9\u30fc\u3092\u4f7f\u3063\u305f Kotlin \/ JS \u958b\u767a\u306e\u52b9\u7387\u30a2\u30c3\u30d7\u3092\u72d9\u3063\u3066\u3001\u65b0\u305f\u306b<em>\u30a4\u30f3\u30af\u30ea\u30e1\u30f3\u30bf\u30eb\u30b3\u30f3\u30d1\u30a4\u30eb<\/em>\u30e2\u30fc\u30c9\u3092\u5c0e\u5165\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u3053\u306e\u30e2\u30fc\u30c9\u3067 Gradle \u30bf\u30b9\u30af <code>compileDevelopmentExecutableKotlinJs<\/code> \u3092\u4f7f\u3063\u3066<strong>\u958b\u767a\u7528\u30d0\u30a4\u30ca\u30ea<\/strong>\u3092\u30d3\u30eb\u30c9\u3059\u308b\u3068\u3001\u30b3\u30f3\u30d1\u30a4\u30e9\u30fc\u304c\u524d\u306e\u30b3\u30f3\u30d1\u30a4\u30eb\u306e\u7d50\u679c\u3092\u30e2\u30b8\u30e5\u30fc\u30eb\u30ec\u30d9\u30eb\u3067\u30ad\u30e3\u30c3\u30b7\u30e5\u3057\u307e\u3059\u3002 \u30b3\u30f3\u30d1\u30a4\u30e9\u30fc\u304c\u5f8c\u7d9a\u306e\u30b3\u30f3\u30d1\u30a4\u30eb\u3067\u30ad\u30e3\u30c3\u30b7\u30e5\u3055\u308c\u3066\u3044\u308b\u30b3\u30f3\u30d1\u30a4\u30eb\u7d50\u679c\u3092\u672a\u5909\u66f4\u306e\u30bd\u30fc\u30b9\u30d5\u30a1\u30a4\u30eb\u306b\u5bfe\u3057\u3066\u4f7f\u7528\u3059\u308b\u305f\u3081\u3001\u30b3\u30f3\u30d1\u30a4\u30eb\u306e\u5b8c\u4e86\u901f\u5ea6\u304c\uff08\u5c0f\u3055\u306a\u5909\u66f4\u3067\u306f\u7279\u306b\uff09\u5411\u4e0a\u3057\u307e\u3059\u3002 \u3053\u306e\u6539\u5584\u306f\u3001\u958b\u767a\u30d7\u30ed\u30bb\u30b9\u306b\u304a\u3044\u3066\u7de8\u96c6\u30fb\u30d3\u30eb\u30c9\u30fb\u30c7\u30d0\u30c3\u30b0\u306e\u30b5\u30a4\u30af\u30eb\u3092\u77ed\u7e2e\u3059\u308b\u305f\u3081\u306e\u3082\u306e\u3067\u3042\u308a\u3001\u30d7\u30ed\u30c0\u30af\u30b7\u30e7\u30f3\u306e\u30a2\u30fc\u30c6\u30a3\u30d5\u30a1\u30af\u30c8\u3092\u30d3\u30eb\u30c9\u3059\u308b\u3053\u3068\u306b\u306f\u5f71\u97ff\u3057\u307e\u305b\u3093\u3002<\/p>\n<p>\u958b\u767a\u7528\u30d0\u30a4\u30ca\u30ea\u306e\u30a4\u30f3\u30af\u30ea\u30e1\u30f3\u30bf\u30eb\u30b3\u30f3\u30d1\u30a4\u30eb\u3092\u6709\u52b9\u306b\u3059\u308b\u306b\u306f\u3001\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306e <code>gradle.properties<\/code> \u306b\u6b21\u306e\u884c\u3092\u8ffd\u52a0\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"kotlin-code\" style=\"visibility: hidden; padding: 36px 0;\" data-highlight-only=\"true\">&lt;br \/&gt;\nkotlin.incremental.js.ir=true \/\/ false by default&lt;br \/&gt;\n<\/pre>\n<p>\u5f53\u793e\u306e\u30c6\u30b9\u30c8\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067\u306f\u3001\u3053\u306e\u65b0\u3057\u3044\u30e2\u30fc\u30c9\u3092\u4f7f\u3046\u3053\u3068\u306b\u3088\u308a\u3001\u30a4\u30f3\u30af\u30ea\u30e1\u30f3\u30bf\u30eb\u30b3\u30f3\u30d1\u30a4\u30eb\u306e\u901f\u5ea6\u304c 30% \u3082\u5411\u4e0a\u3057\u307e\u3057\u305f\u3002 \u3057\u304b\u3057\u3001\u3053\u306e\u30e2\u30fc\u30c9\u3067\u30af\u30ea\u30fc\u30f3\u306a\u30d3\u30eb\u30c9\u3092\u5b9f\u884c\u3059\u308b\u5834\u5408\u306f\u30ad\u30e3\u30c3\u30b7\u30e5\u306e\u4f5c\u6210\u3068\u66f8\u304d\u8fbc\u307f\u304c\u5fc5\u8981\u306b\u306a\u308b\u305f\u3081\u3001\u901f\u5ea6\u304c\u4f4e\u4e0b\u3057\u3066\u3057\u307e\u3044\u307e\u3057\u305f\u3002<\/p>\n<h2 id=\"kotlin-native-performance-improvements\"><span id=\"KotlinNative_performance_improvements\" class=\"ez-toc-section\"><\/span>Kotlin \/ Native \u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6539\u5584<\/h2>\n<p>Kotlin 1.6.20 \u3067\u306f\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u6539\u5584\u3057\u305f\u307b\u304b\u3001Kotlin \u304c\u751f\u6210\u3059\u308b LLVM IR \u306b\u5f71\u97ff\u3092\u53ca\u307c\u3059\u30d0\u30b0\u3092\u4fee\u6b63\u3057\u3066\u3044\u307e\u3059\u3002 \u5f53\u793e\u306e\u793e\u5185\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306b\u5bfe\u3059\u308b\u30d9\u30f3\u30c1\u30de\u30fc\u30af\u3092\u5b9f\u65bd\u3057\u305f\u7d50\u679c\u3001\u6982\u3057\u3066\u4ee5\u4e0b\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6539\u5584\u3092\u9054\u6210\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<ul>\n<li>\u5b9f\u884c\u6642\u9593\u3092 15% \u524a\u6e1b<\/li>\n<li>\u30ea\u30ea\u30fc\u30b9\u7248\u3068\u30c7\u30d0\u30c3\u30b0\u7248\u306e\u30d0\u30a4\u30ca\u30ea\u306e\u4e21\u65b9\u3067\u30b3\u30fc\u30c9\u30b5\u30a4\u30ba\u3092 20% \u524a\u6e1b<\/li>\n<li>\u30ea\u30ea\u30fc\u30b9\u7248\u30d0\u30a4\u30ca\u30ea\u306e\u30b3\u30f3\u30d1\u30a4\u30eb\u6642\u9593\u3092 26% \u524a\u6e1b<\/li>\n<\/ul>\n<p>\u3053\u306e\u3088\u3046\u306a\u6539\u5584\u306b\u3088\u308a\u3001\u5927\u898f\u6a21\u306a\u793e\u5185\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306b\u304a\u3051\u308b\u30c7\u30d0\u30c3\u30b0\u7248\u30d0\u30a4\u30ca\u30ea\u306e\u30b3\u30f3\u30d1\u30a4\u30eb\u6642\u9593\u3082 10% \u524a\u6e1b\u3067\u304d\u307e\u3057\u305f\u3002<\/p>\n<p>\u3053\u308c\u3092\u9054\u6210\u3059\u308b\u305f\u3081\u3001\u30b3\u30f3\u30d1\u30a4\u30e9\u30fc\u304c\u751f\u6210\u3059\u308b\u5408\u6210\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u4e00\u90e8\u3092\u9759\u7684\u306b\u521d\u671f\u5316\u3057\u3001\u5404\u95a2\u6570\u306e LLVM IR \u3092\u69cb\u9020\u5316\u3059\u308b\u65b9\u6cd5\u3092\u6539\u5584\u3057\u3001\u3055\u3089\u306b\u30b3\u30f3\u30d1\u30a4\u30e9\u30fc\u30ad\u30e3\u30c3\u30b7\u30e5\u3092\u6700\u9069\u5316\u3057\u307e\u3057\u305f\u3002<\/p>\n<h2 id=\"hierarchical-structure-support-for-multiplatform-projects\"><span id=\"Hierarchical_structure_support_for_multiplatform_projects\" class=\"ez-toc-section\"><\/span>\u30de\u30eb\u30c1\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306b\u304a\u3051\u308b\u968e\u5c64\u69cb\u9020\u306e\u30b5\u30dd\u30fc\u30c8<\/h2>\n<p>Kotlin 1.6.20 \u306f\u3001\u30c7\u30d5\u30a9\u30eb\u30c8\u3067\u968e\u5c64\u69cb\u9020\u306e\u30b5\u30dd\u30fc\u30c8\u304c\u6709\u52b9\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002 <a href=\"https:\/\/kotlinlang.org\/docs\/whatsnew14.html#sharing-code-in-several-targets-with-the-hierarchical-project-structure\" target=\"_blank\" rel=\"noopener\">Kotlin 1.4.0<\/a> \u3067\u968e\u5c64\u69cb\u9020\u3092\u5c0e\u5165\u3057\u3066\u4ee5\u6765\u3001\u30d5\u30ed\u30f3\u30c8\u30a8\u30f3\u30c9\u3092\u5927\u5e45\u306b\u6539\u5584\u3057\u3001IDE \u306e\u30a4\u30f3\u30dd\u30fc\u30c8\u3092\u5b89\u5b9a\u3055\u305b\u307e\u3057\u305f\u3002<\/p>\n<p>\u5f93\u6765\u3001\u30de\u30eb\u30c1\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067\u30b3\u30fc\u30c9\u3092\u8ffd\u52a0\u3059\u308b\u65b9\u6cd5\u306f 2 \u3064\u3042\u308a\u307e\u3057\u305f\u3002 1 \u3064\u76ee\u306f\u3001\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u56fa\u6709\u306e\u30bd\u30fc\u30b9\u30bb\u30c3\u30c8\u306b\u633f\u5165\u3059\u308b\u3068\u3044\u3046\u65b9\u6cd5\u3067\u3059\u30021 \u3064\u306e\u30bf\u30fc\u30b2\u30c3\u30c8\u306b\u9650\u5b9a\u3055\u308c\u308b\u307b\u304b\u3001\u4ed6\u306e\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u306b\u3088\u308b\u518d\u5229\u7528\u306f\u3067\u304d\u307e\u305b\u3093\u3067\u3057\u305f\u3002 2 \u3064\u76ee\u306f\u3001\u73fe\u5728 Kotlin \u304c\u5bfe\u5fdc\u3057\u3066\u3044\u308b\u3059\u3079\u3066\u306e\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u3067\u5171\u6709\u3055\u308c\u3066\u3044\u308b\u5171\u901a\u306e\u30bd\u30fc\u30b9\u30bb\u30c3\u30c8\u3092\u4f7f\u7528\u3059\u308b\u3068\u3044\u3046\u65b9\u6cd5\u3067\u3059\u3002<\/p>\n<p>\u4eca\u56de\u3001\u6570\u591a\u304f\u306e\u5171\u901a\u30ed\u30b8\u30c3\u30af\u3068\u30b5\u30fc\u30c9\u30d1\u30fc\u30c6\u30a3 API \u3092\u518d\u5229\u7528\u3059\u308b\u8907\u6570\u306e\u985e\u4f3c\u3057\u305f\u30cd\u30a4\u30c6\u30a3\u30d6\u30bf\u30fc\u30b2\u30c3\u30c8\u3067<a href=\"https:\/\/blog.jetbrains.com\/kotlin\/2022\/02\/kotlin-1-6-20-m1-released\/#better-code-sharing-in-your-project\">\u30bd\u30fc\u30b9\u30b3\u30fc\u30c9\u3092\u5171\u6709<\/a>\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3057\u305f\u3002 \u968e\u5c64\u7684\u306a\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u69cb\u9020\u306e\u30b5\u30dd\u30fc\u30c8\u306b\u3088\u308a\u3001\u6b63\u3057\u3044\u30c7\u30d5\u30a9\u30eb\u30c8\u306e\u4f9d\u5b58\u95a2\u4fc2\u3092\u63d0\u4f9b\u3057\u3001\u5171\u6709\u30b3\u30fc\u30c9\u3067\u5229\u7528\u53ef\u80fd\u306a API \u3092\u691c\u51fa\u3057\u307e\u3059\u3002 \u3053\u308c\u306b\u3088\u308a\u3001\u8907\u96d1\u306a\u30d3\u30eb\u30c9\u69cb\u6210\u3068\u56de\u907f\u7b56\u306e\u4f7f\u7528\u3092\u56de\u907f\u3057\u3001IDE \u306e\u652f\u63f4\u306e\u4e0b\u3067\u30cd\u30a4\u30c6\u30a3\u30d6\u30bf\u30fc\u30b2\u30c3\u30c8\u9593\u3067\u30bd\u30fc\u30b9\u30bb\u30c3\u30c8\u3092\u5171\u6709\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 \u307e\u305f\u3001\u5225\u306e\u30bf\u30fc\u30b2\u30c3\u30c8\u3092\u5bfe\u8c61\u3068\u3059\u308b\u5b89\u5168\u3067\u306a\u3044 API \u306e\u4f7f\u7528\u3082\u907f\u3051\u3089\u308c\u307e\u3059\u3002<\/p>\n<p>\u968e\u5c64\u7684\u306a\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u69cb\u9020\u306f\u30e9\u30a4\u30d6\u30e9\u30ea\u306e\u4f5c\u6210\u8005\u306b\u3082\u91cd\u5b9d\u3057\u307e\u3059\u3002\u30bf\u30fc\u30b2\u30c3\u30c8\u306e\u30b5\u30d6\u30bb\u30c3\u30c8\u306b\u5bfe\u3057\u3066\u4e00\u822c\u7684\u306a API \u3092\u6301\u3064\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u516c\u958b\u3001\u4f7f\u7528\u3067\u304d\u308b\u305f\u3081\u3067\u3059\u3002<br \/>\u30c7\u30d5\u30a9\u30eb\u30c8\u3067\u306f\u3001\u968e\u5c64\u7684\u306a\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u69cb\u9020\u3092\u6301\u3064\u516c\u958b\u5bfe\u8c61\u306e\u30e9\u30a4\u30d6\u30e9\u30ea\u306f\u3001\u968e\u5c64\u7684\u306a\u69cb\u9020\u3092\u6301\u3064\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3068\u306e\u307f\u4e92\u63db\u6027\u3092\u6301\u3061\u307e\u3059\u3002 \u8a73\u7d30\u306f\u3001<a href=\"https:\/\/kotlinlang.org\/docs\/multiplatform-hierarchy.html#compatibility\" target=\"_blank\" rel=\"noopener\">\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u30e9\u30a4\u30d6\u30e9\u30ea\u306e\u4e92\u63db\u6027<\/a>\u3092\u53c2\u7167\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<h3 id=\"better-code-sharing-in-your-project\"><span id=\"Better_code-sharing_in_your_project\" class=\"ez-toc-section\"><\/span>\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067\u306e\u30b3\u30fc\u30c9\u5171\u6709\u3092\u6539\u5584<\/h3>\n<p>\u968e\u5c64\u69cb\u9020\u304c\u30b5\u30dd\u30fc\u30c8\u3055\u308c\u3066\u3044\u306a\u3044\u5834\u5408\u3001\u30b3\u30fc\u30c9\u3092<em>\u3059\u3079\u3066<\/em>\u306e <a href=\"https:\/\/kotlinlang.org\/docs\/multiplatform-dsl-reference.html#targets\" target=\"_blank\" rel=\"noopener\">Kotlin \u30bf\u30fc\u30b2\u30c3\u30c8<\/a>\u3067\u306f\u306a\u304f<em>\u4e00\u90e8<\/em>\u3067\u306e\u307f\u7c21\u5358\u306b\u5171\u6709\u3059\u308b\u624b\u6bb5\u306f\u3042\u308a\u307e\u305b\u3093\u3002 \u3088\u304f\u3042\u308b\u4f8b\u3068\u3057\u3066\u3001\u3059\u3079\u3066\u306e iOS \u30bf\u30fc\u30b2\u30c3\u30c8\u3067\u30b3\u30fc\u30c9\u3092\u5171\u6709\u3059\u308b\u3068\u540c\u6642\u306b\u3001<code>Foundation<\/code> \u306e\u3088\u3046\u306a iOS \u7279\u6709\u306e<a href=\"https:\/\/kotlinlang.org\/docs\/multiplatform-share-on-platforms.html#use-native-libraries-in-the-hierarchical-structure\" target=\"_blank\" rel=\"noopener\">\u4f9d\u5b58\u95a2\u4fc2<\/a>\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308b\u5834\u5408\u304c\u6319\u3052\u3089\u308c\u307e\u3059\u3002<\/p>\n<p>\u968e\u5c64\u7684\u306a\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u69cb\u9020\u304c\u30b5\u30dd\u30fc\u30c8\u3055\u308c\u308b\u3053\u3068\u3067\u3001\u3053\u308c\u3092\u7c21\u5358\u306b\u9054\u6210\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3057\u305f\u3002 \u65b0\u3057\u3044\u69cb\u9020\u3067\u306f\u3001\u30bd\u30fc\u30b9\u30bb\u30c3\u30c8\u306b\u3088\u308a\u968e\u5c64\u304c\u4f5c\u3089\u308c\u307e\u3059\u3002 \u7279\u5b9a\u30bd\u30fc\u30b9\u30bb\u30c3\u30c8\u306e\u30b3\u30f3\u30d1\u30a4\u30eb\u5148\u3068\u306a\u308b\u5404\u30bf\u30fc\u30b2\u30c3\u30c8\u3067\u5229\u7528\u53ef\u80fd\u306a\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u7279\u6709\u306e\u8a00\u8a9e\u6a5f\u80fd\u3068\u4f9d\u5b58\u95a2\u4fc2\u3092\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u305f\u3068\u3048\u3070\u3001iOS \u30c7\u30d0\u30a4\u30b9\u3068\u30b7\u30df\u30e5\u30ec\u30fc\u30bf\u30fc\u306e <code>iosArm64<\/code> \u3068 <code>iosX64<\/code> \u306e 2 \u3064\u3092\u30bf\u30fc\u30b2\u30c3\u30c8\u3068\u3057\u305f\u4e00\u822c\u7684\u306a\u30de\u30eb\u30c1\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306b\u3064\u3044\u3066\u8003\u3048\u3066\u307f\u307e\u3057\u3087\u3046\u3002 Kotlin \u306e\u30c4\u30fc\u30ea\u30f3\u30b0\u306f\u3001\u3053\u306e 2 \u3064\u306e\u30bf\u30fc\u30b2\u30c3\u30c8\u304c\u540c\u3058\u95a2\u6570\u3092\u6301\u3063\u3066\u3044\u308b\u3068\u7406\u89e3\u3059\u308b\u305f\u3081\u3001\u30e6\u30fc\u30b6\u30fc\u306f\u4e2d\u9593\u30bd\u30fc\u30b9\u30bb\u30c3\u30c8\u3001\u3064\u307e\u308a <code>iosMain<\/code> \u304b\u3089\u305d\u306e\u95a2\u6570\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/blog.jetbrains.com\/wp-content\/uploads\/2025\/09\/LHS-2rPAgtESE4DYL_hqh6AGQdKUC0BAmS-cGiuoaiHM5Qq4cU1Lwzur0-pjDG8WI_rgu03A-SWj9H4O2T2Y7Cze5guSSod7fEeqVGfS7EL74iTRQjuvyOGP2Uv3pPkNejYPrjJa.jpg\" width=\"624\" height=\"279\"><\/p>\n<p>Kotlin \u306e\u30c4\u30fc\u30eb\u30c1\u30a7\u30fc\u30f3\u306f\u3001Kotlin \/ Native stdlib \u3084\u30cd\u30a4\u30c6\u30a3\u30d6\u30e9\u30a4\u30d6\u30e9\u30ea\u3068\u3044\u3063\u305f\u30c7\u30d5\u30a9\u30eb\u30c8\u306e\u6b63\u3057\u3044\u4f9d\u5b58\u95a2\u4fc2\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002 \u3055\u3089\u306b\u3001Kotlin \u306e\u30c4\u30fc\u30ea\u30f3\u30b0\u306f\u3001\u5171\u6709\u30b3\u30fc\u30c9\u5185\u3067\u5229\u7528\u3067\u304d\u308b API \u30b5\u30fc\u30d5\u30a7\u30b9\u30a8\u30ea\u30a2\u3092\u6b63\u78ba\u306b\u691c\u51fa\u3057\u3088\u3046\u3068\u8a66\u307f\u307e\u3059\u3002 \u3053\u308c\u306b\u3088\u308a\u3001Windows \u306b\u5171\u6709\u3055\u308c\u308b\u30b3\u30fc\u30c9\u3067 macOS \u7279\u6709\u306e\u95a2\u6570\u3092\u4f7f\u7528\u3057\u3066\u3057\u307e\u3046\u4e8b\u614b\u306a\u3069\u3092\u907f\u3051\u3089\u308c\u307e\u3059\u3002<\/p>\n<h3 id=\"more-opportunities-for-library-authors\"><span id=\"More_opportunities_for_library_authors\" class=\"ez-toc-section\"><\/span>\u30e9\u30a4\u30d6\u30e9\u30ea\u4f5c\u6210\u8005\u306e\u53ef\u80fd\u6027\u5411\u4e0a<\/h3>\n<p>\u30de\u30eb\u30c1\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u30e9\u30a4\u30d6\u30e9\u30ea\u304c\u516c\u958b\u3055\u308c\u308b\u3068\u3001\u305d\u306e\u4e2d\u9593\u30bd\u30fc\u30b9\u30bb\u30c3\u30c8\u306e API \u3082\u4e00\u7dd2\u306b\u516c\u958b\u3055\u308c\u3066\u30b3\u30f3\u30b7\u30e5\u30fc\u30de\u30fc\u3067\u5229\u7528\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002 \u3055\u3089\u306b\u3001Kotlin \u306e\u30c4\u30fc\u30eb\u30c1\u30a7\u30fc\u30f3\u306f\u30b3\u30f3\u30b7\u30e5\u30fc\u30de\u30fc\u306e\u30bd\u30fc\u30b9\u30bb\u30c3\u30c8\u3067\u5229\u7528\u53ef\u80fd\u306a API \u3092\u81ea\u52d5\u691c\u51fa\u3059\u308b\u3068\u540c\u6642\u306b\u3001\u5b89\u5168\u3067\u306a\u3044\u4f7f\u7528\u65b9\u6cd5\uff08JVM \u3092\u5bfe\u8c61\u3068\u3059\u308b API \u3092 JS \u30b3\u30fc\u30c9\u3067\u4f7f\u7528\u3059\u308b\u7b49\uff09\u3092\u6ce8\u610f\u6df1\u304f\u76e3\u8996\u3057\u307e\u3059\u3002 \u8a73\u7d30\u306f\u3001<a href=\"https:\/\/kotlinlang.org\/docs\/multiplatform-share-on-platforms.html#share-code-in-libraries\" target=\"_blank\" rel=\"noopener\">\u30e9\u30a4\u30d6\u30e9\u30ea\u306e\u30b3\u30fc\u30c9\u5171\u6709<\/a>\u3092\u53c2\u7167\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<h3 id=\"configuration-an-setup\"><span id=\"Configuration_and_setup\" class=\"ez-toc-section\"><\/span>\u69cb\u6210\u3068\u30bb\u30c3\u30c8\u30a2\u30c3\u30d7<\/h3>\n<p>Kotlin 1.6.20 \u3088\u308a\u3001\u3059\u3079\u3066\u306e\u65b0\u898f\u30de\u30eb\u30c1\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306b\u968e\u5c64\u7684\u306a\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u69cb\u9020\u304c\u7528\u3044\u3089\u308c\u307e\u3059\u3002 \u8ffd\u52a0\u306e\u30bb\u30c3\u30c8\u30a2\u30c3\u30d7\u306f\u4e0d\u8981\u3067\u3059\u3002<\/p>\n<ul>\n<li>\u3059\u3067\u306b<a href=\"https:\/\/kotlinlang.org\/docs\/mpp-share-on-platforms.html#share-code-on-similar-platforms\" target=\"_blank\" rel=\"noopener\">\u624b\u52d5\u3067\u6709\u52b9\u306b\u3057\u3066\u3044\u308b<\/a>\u5834\u5408\u306f\u3001<code>gradle.properties<\/code> \u304b\u3089\u975e\u63a8\u5968\u3068\u306a\u3063\u305f\u30aa\u30d7\u30b7\u30e7\u30f3\u3092\u524a\u9664\u3067\u304d\u307e\u3059\u3002<\/li>\n<\/ul>\n<pre class=\"kotlin-code\" style=\"visibility: hidden; padding: 36px 0;\" data-highlight-only=\"true\">&lt;br \/&gt;\nkotlin.mpp.enableGranularSourceSetsMetadata=true&lt;br \/&gt;\nkotlin.native.enableDependencyPropagation=true&lt;br \/&gt;\n<\/pre>\n<ul>\n<li>Kotlin 1.6.20 \u3067\u6700\u9ad8\u306e\u4f7f\u7528\u4f53\u9a13\u3092\u5f97\u308b\u306b\u306f\u3001<a href=\"https:\/\/developer.android.com\/studio\" target=\"_blank\" rel=\"noopener\">Android Studio 2021.1.1<\/a>\uff08Bumblebee\uff09\u4ee5\u964d\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3092\u304a\u52e7\u3081\u3057\u307e\u3059\u3002<\/li>\n<li>\u968e\u5c64\u69cb\u9020\u3092\u4f7f\u7528\u3057\u306a\u3044\u3068\u3044\u3046\u9078\u629e\u80a2\u3082\u7528\u610f\u3055\u308c\u3066\u3044\u307e\u3059\u3002 \u968e\u5c64\u69cb\u9020\u306e\u30b5\u30dd\u30fc\u30c8\u3092\u7121\u52b9\u306b\u3059\u308b\u306b\u306f\u3001<code>gradle.properties<\/code> \u3067\u4ee5\u4e0b\u306e\u30aa\u30d7\u30b7\u30e7\u30f3\u3092\u8a2d\u5b9a\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/li>\n<\/ul>\n<pre class=\"kotlin-code\" style=\"visibility: hidden; padding: 36px 0;\" data-highlight-only=\"true\">&lt;br \/&gt;\nkotlin.mpp.hierarchicalStructureSupport=false&lt;br \/&gt;\n<\/pre>\n<h1 id=\"complete-list-of-improvements\">\u3059\u3079\u3066\u306e\u6539\u5584\u70b9<\/h1>\n<h2 id=\"language\"><span id=\"Language\" class=\"ez-toc-section\"><\/span>\u8a00\u8a9e<\/h2>\n<ul>\n<li><a href=\"https:\/\/kotlinlang.org\/docs\/whatsnew1620.html#prototype-of-context-receivers-for-kotlin-jvm\" target=\"_blank\" rel=\"noopener\">Kotlin\/JVM \u306b\u304a\u3051\u308b\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u30ec\u30b7\u30fc\u30d0\u30fc\u306e\u30d7\u30ed\u30c8\u30bf\u30a4\u30d7<\/a><\/li>\n<li><a href=\"https:\/\/kotlinlang.org\/docs\/whatsnew1620.html#definitely-non-nullable-types\" target=\"_blank\" rel=\"noopener\">\u78ba\u5b9f\u306b\u975e nullable \u306a\u578b<\/a><\/li>\n<\/ul>\n<h2 id=\"kotlin-jvm\"><span id=\"KotlinJVM\" class=\"ez-toc-section\"><\/span>Kotlin\/JVM<\/h2>\n<ul>\n<li><a href=\"https:\/\/kotlinlang.org\/docs\/whatsnew1620.html#new-jvmdefaultwithcompatibility-annotation-for-interfaces\" target=\"_blank\" rel=\"noopener\">\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u7528\u306e\u65b0\u3057\u3044 <code>@JvmDefaultWithCompatibility<\/code> \u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3<\/a><\/li>\n<li><a href=\"https:\/\/kotlinlang.org\/docs\/whatsnew1620.html#compatibility-changes-in-the-xjvm-default-modes\" target=\"_blank\" rel=\"noopener\"><code>-Xjvm-default`<\/code> \u30e2\u30fc\u30c9\u306b\u304a\u3051\u308b\u4e92\u63db\u6027\u306e\u5909\u66f4<\/a><\/li>\n<li><a href=\"https:\/\/kotlinlang.org\/docs\/whatsnew1620.html#support-for-parallel-compilation-of-a-single-module-in-the-jvm-backend\" target=\"_blank\" rel=\"noopener\">JMV \u30d0\u30c3\u30af\u30a8\u30f3\u30c9\u306b\u304a\u3051\u308b\u5358\u4e00\u30e2\u30b8\u30e5\u30fc\u30eb\u306e\u4e26\u5217\u30b3\u30f3\u30d1\u30a4\u30eb\u306b\u5bfe\u3059\u308b\u30b5\u30dd\u30fc\u30c8<\/a><\/li>\n<li><a href=\"https:\/\/kotlinlang.org\/docs\/whatsnew1620.html#support-for-callable-references-to-function-interface-constructors\" target=\"_blank\" rel=\"noopener\">\u95a2\u6570\u578b\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u30fc\u306b\u5bfe\u3059\u308b\u547c\u3073\u51fa\u3057\u53ef\u80fd\u53c2\u7167\u306e\u30b5\u30dd\u30fc\u30c8<\/a><\/li>\n<\/ul>\n<h2 id=\"kotlin-native\"><span id=\"KotlinNative\" class=\"ez-toc-section\"><\/span>Kotlin\/Native<\/h2>\n<ul>\n<li><a href=\"https:\/\/kotlinlang.org\/docs\/whatsnew1620.html#an-update-on-the-new-memory-manager\" target=\"_blank\" rel=\"noopener\">\u65b0\u3057\u3044\u30e1\u30e2\u30ea\u30de\u30cd\u30fc\u30b8\u30e3\u30fc\u306e\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8<\/a><\/li>\n<li><a href=\"https:\/\/kotlinlang.org\/docs\/whatsnew1620.html#concurrent-implementation-for-the-sweep-phase-in-new-memory-manager\" target=\"_blank\" rel=\"noopener\">\u65b0\u3057\u3044\u30e1\u30e2\u30ea\u30de\u30cd\u30fc\u30b8\u30e3\u30fc\u306b\u304a\u3051\u308b\u30b9\u30a4\u30fc\u30d7\u30d5\u30a7\u30fc\u30ba\u306e\u4e26\u884c\u5b9f\u88c5<\/a><\/li>\n<li><a href=\"https:\/\/kotlinlang.org\/docs\/whatsnew1620.html#instantiation-of-annotation-classes\" target=\"_blank\" rel=\"noopener\">\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u30af\u30e9\u30b9\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u5316<\/a><\/li>\n<li><a href=\"https:\/\/kotlinlang.org\/docs\/whatsnew1620.html#interop-with-swift-async-await-returning-void-instead-of-kotlinunit\" target=\"_blank\" rel=\"noopener\">Swift \u306e async\/await \u3068\u306e\u76f8\u4e92\u904b\u7528\u6027\u78ba\u4fdd: <code>KotlinUnit<\/code> \u306e\u4ee3\u308f\u308a\u306b <code>Void<\/code> \u3092\u8fd4\u5374<\/a><\/li>\n<li><a href=\"https:\/\/kotlinlang.org\/docs\/whatsnew1620.html#better-stack-traces-with-libbacktrace\" target=\"_blank\" rel=\"noopener\"><code>libbacktrace<\/code> \u306b\u3088\u308b\u30b9\u30bf\u30c3\u30af\u30c8\u30ec\u30fc\u30b9\u306e\u6539\u5584<\/a><\/li>\n<li><a href=\"https:\/\/kotlinlang.org\/docs\/whatsnew1620.html#support-for-standalone-android-executables\" target=\"_blank\" rel=\"noopener\">Android \u306e\u30b9\u30bf\u30f3\u30c9\u30a2\u30ed\u30f3\u5b9f\u884c\u53ef\u80fd\u30d5\u30a1\u30a4\u30eb\u306e\u30b5\u30dd\u30fc\u30c8<\/a><\/li>\n<li><a href=\"https:\/\/kotlinlang.org\/docs\/whatsnew1620.html#performance-improvements\" target=\"_blank\" rel=\"noopener\">\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u6539\u5584<\/a><\/li>\n<li><a href=\"https:\/\/kotlinlang.org\/docs\/whatsnew1620.html#improved-error-handling-during-cinterop-modules-import\" target=\"_blank\" rel=\"noopener\">cinterop \u30e2\u30b8\u30e5\u30fc\u30eb\u306e\u30a4\u30f3\u30dd\u30fc\u30c8\u4e2d\u306b\u767a\u751f\u3059\u308b\u30a8\u30e9\u30fc\u51e6\u7406\u306e\u6539\u5584<\/a><\/li>\n<li><a href=\"https:\/\/kotlinlang.org\/docs\/whatsnew1620.html#support-for-xcode-13-libraries\" target=\"_blank\" rel=\"noopener\">Xcode 13 \u30e9\u30a4\u30d6\u30e9\u30ea\u306e\u30b5\u30dd\u30fc\u30c8<\/a><\/li>\n<\/ul>\n<h2 id=\"kotlin-multiplatform\"><span id=\"Kotlin_Multiplatform\" class=\"ez-toc-section\"><\/span>Kotlin Multiplatform<\/h2>\n<ul>\n<li><a href=\"https:\/\/kotlinlang.org\/docs\/whatsnew1620.html#hierarchical-structure-support-for-multiplatform-projects\" target=\"_blank\" rel=\"noopener\">\u30de\u30eb\u30c1\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306b\u304a\u3051\u308b\u968e\u5c64\u69cb\u9020\u306e\u30b5\u30dd\u30fc\u30c8<\/a><\/li>\n<li><a href=\"https:\/\/kotlinlang.org\/docs\/whatsnew1620.html#kotlin-cocoapods-gradle-plugin\" target=\"_blank\" rel=\"noopener\">Kotlin CocoaPods Gradle \u30d7\u30e9\u30b0\u30a4\u30f3\u306e\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8<\/a><\/li>\n<\/ul>\n<h2 id=\"kotlin-js\"><span id=\"KotlinJS\" class=\"ez-toc-section\"><\/span>Kotlin\/JS<\/h2>\n<ul>\n<li><a href=\"https:\/\/kotlinlang.org\/docs\/whatsnew1620.html#incremental-compilation-for-development-binaries-with-ir-compiler\" target=\"_blank\" rel=\"noopener\">IR \u30b3\u30f3\u30d1\u30a4\u30e9\u30fc\u3092\u4f7f\u3063\u305f\u958b\u767a\u7528\u30d0\u30a4\u30ca\u30ea\u306e\u30a4\u30f3\u30af\u30ea\u30e1\u30f3\u30bf\u30eb\u30b3\u30f3\u30d1\u30a4\u30eb<\/a><\/li>\n<li><a href=\"https:\/\/kotlinlang.org\/docs\/whatsnew1620.html#lazy-initialization-of-top-level-properties-by-default-with-ir-compiler\" target=\"_blank\" rel=\"noopener\">IR \u30b3\u30f3\u30d1\u30a4\u30e9\u30fc\u3067\u30c8\u30c3\u30d7\u30ec\u30d9\u30eb\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u30c7\u30d5\u30a9\u30eb\u30c8\u3067\u9045\u5ef6\u521d\u671f\u5316<\/a><\/li>\n<li><a href=\"https:\/\/kotlinlang.org\/docs\/whatsnew1620.html#separate-js-files-for-project-modules-by-default-with-ir-compiler\" target=\"_blank\" rel=\"noopener\">IR \u30b3\u30f3\u30d1\u30a4\u30e9\u30fc\u3067\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u30e2\u30b8\u30e5\u30fc\u30eb\u306b\u500b\u5225\u306e JS \u30d5\u30a1\u30a4\u30eb\u3092\u30c7\u30d5\u30a9\u30eb\u30c8\u3067\u4f7f\u7528<\/a><\/li>\n<li><a href=\"https:\/\/kotlinlang.org\/docs\/whatsnew1620.html#char-class-optimization\" target=\"_blank\" rel=\"noopener\"><code>Char<\/code> \u30af\u30e9\u30b9\u306e\u6700\u9069\u5316<\/a><\/li>\n<li><a href=\"https:\/\/kotlinlang.org\/docs\/whatsnew1620.html#improvements-to-export-and-typescript-declaration-generation\" target=\"_blank\" rel=\"noopener\">\u30a8\u30af\u30b9\u30dd\u30fc\u30c8\u304a\u3088\u3073 TypeScript \u306e\u5ba3\u8a00\u751f\u6210\u306b\u95a2\u3059\u308b\u6539\u5584<\/a><\/li>\n<li><a href=\"https:\/\/kotlinlang.org\/docs\/whatsnew1620.html#aftertest-guarantees-for-asynchronous-tests\" target=\"_blank\" rel=\"noopener\">\u975e\u540c\u671f\u30c6\u30b9\u30c8\u306b\u5bfe\u3059\u308b <code>@AfterTest<\/code> \u306e\u52d5\u4f5c\u4fdd\u8a3c<\/a><\/li>\n<\/ul>\n<h2 id=\"security\"><span id=\"Security\" class=\"ez-toc-section\"><\/span>\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3<\/h2>\n<ul>\n<li><a href=\"https:\/\/kotlinlang.org\/docs\/whatsnew1620.html#using-relative-paths-in-klibs\" target=\"_blank\" rel=\"noopener\">klibs \u306b\u304a\u3051\u308b\u76f8\u5bfe\u30d1\u30b9\u306e\u4f7f\u7528<\/a><\/li>\n<li><a href=\"https:\/\/kotlinlang.org\/docs\/whatsnew1620.html#persisting-yarn-lock-for-kotlin-js-gradle-projects\" target=\"_blank\" rel=\"noopener\">Kotlin\/JS Gradle \u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306b\u304a\u3051\u308b <code>yarn.lock<\/code> \u306e\u6c38\u7d9a\u5316<\/a><\/li>\n<li><a href=\"https:\/\/kotlinlang.org\/docs\/whatsnew1620.html#installation-of-npm-dependencies-with-ignore-scripts-by-default\" target=\"_blank\" rel=\"noopener\"> \u30c7\u30d5\u30a9\u30eb\u30c8\u3067 <code>--ignore-scripts<\/code> \u3092\u4f7f\u3063\u305f npm \u306e\u4f9d\u5b58\u95a2\u4fc2\u306e\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb<\/a><\/li>\n<\/ul>\n<h2 id=\"gradle\"><span id=\"Gradle%EF%BB%BF\" class=\"ez-toc-section\"><\/span>Gradle<\/h2>\n<ul>\n<li><a href=\"https:\/\/kotlinlang.org\/docs\/whatsnew1620.html#properties-for-defining-kotlin-compiler-execution-strategy\" target=\"_blank\" rel=\"noopener\">Kotlin \u30b3\u30f3\u30d1\u30a4\u30e9\u30fc\u306e\u5b9f\u884c\u6226\u7565\u3092\u5b9a\u7fa9\u3059\u308b\u30d7\u30ed\u30d1\u30c6\u30a3<\/a><\/li>\n<li><a href=\"https:\/\/kotlinlang.org\/docs\/whatsnew1620.html#deprecation-of-build-options-for-kapt-and-coroutines\" target=\"_blank\" rel=\"noopener\">kapt \u3068\u30b3\u30eb\u30fc\u30c1\u30f3\u306e\u30d3\u30eb\u30c9\u30aa\u30d7\u30b7\u30e7\u30f3\u306e\u5ec3\u6b62<\/a><\/li>\n<li><a href=\"https:\/\/kotlinlang.org\/docs\/whatsnew1620.html#removal-of-the-kotlin-parallel-tasks-in-project-build-option\" target=\"_blank\" rel=\"noopener\">\u30d3\u30eb\u30c9\u30aa\u30d7\u30b7\u30e7\u30f3 <code>kotlin.parallel.tasks.in.project<\/code> \u306e\u9664\u53bb<\/a><\/li>\n<\/ul>\n<h1 id=\"how-to-install\">Kotlin 1.6.20 \u306e\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u65b9\u6cd5<\/h1>\n<p>\u3059\u3067\u306b <a href=\"https:\/\/www.jetbrains.com\/ja-jp\/idea\/download\/\" target=\"_blank\" rel=\"noopener\">IntelliJ IDEA<\/a> \u304b <a href=\"https:\/\/developer.android.com\/studio\" target=\"_blank\" rel=\"noopener\">Android Studio<\/a> \u3092\u304a\u4f7f\u3044\u306e\u5834\u5408\u306f\u3001IDE \u3067 Kotlin 1.6.20 \u3078\u306e\u81ea\u52d5\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u304c\u63d0\u6848\u3055\u308c\u307e\u3059\u3002 \u307e\u305f\u3001<a href=\"https:\/\/kotlinlang.org\/docs\/releases.html#update-to-a-new-release\" target=\"_blank\" rel=\"noopener\">\u6307\u5b9a\u306e\u624b\u9806<\/a>\u306b\u5f93\u3063\u3066\u624b\u52d5\u3067\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>Kotlin \u306e\u6700\u5927\u9650\u306e\u6a5f\u80fd\u30b5\u30dd\u30fc\u30c8\u3092\u5f97\u308b\u306b\u306f\u3001\u4ee5\u4e0b\u306e\u6700\u65b0\u30d0\u30fc\u30b8\u30e7\u30f3\u3092\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<ul>\n<li><a href=\"https:\/\/www.jetbrains.com\/ja-jp\/idea\/download\/\" target=\"_blank\" rel=\"noopener\">IntelliJ IDEA<\/a> &#8211; \u3055\u307e\u3056\u307e\u306a\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u3092\u5bfe\u8c61\u3068\u3059\u308b Kotlin \u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u958b\u767a\u306b\u9069\u3057\u3066\u3044\u307e\u3059\u3002<\/li>\n<li><a href=\"https:\/\/developer.android.com\/studio\" target=\"_blank\" rel=\"noopener\">Android Studio<\/a> &#8211;&nbsp;Android \u3068\u30af\u30ed\u30b9\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u30e2\u30d0\u30a4\u30eb\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u958b\u767a\u306b\u9069\u3057\u3066\u3044\u307e\u3059\u3002<\/li>\n<\/ul>\n<p>kotlinx \u30e9\u30a4\u30d6\u30e9\u30ea\u3092<a href=\"https:\/\/kotlinlang.org\/releases.html#release-details\" target=\"_blank\" rel=\"noopener\">\u4e92\u63db\u6027\u306e\u3042\u308b\u30d0\u30fc\u30b8\u30e7\u30f3<\/a>\u306b\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u3057\u3001\u65e2\u5b58\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306e\u30d3\u30eb\u30c9\u30b9\u30af\u30ea\u30d7\u30c8\u3067 Kotlin \u306e\u30d0\u30fc\u30b8\u30e7\u30f3 1.6.20 \u3092\u6307\u5b9a\u3057\u3066\u3044\u308b\u3053\u3068\u3082\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<p>\u30b3\u30de\u30f3\u30c9\u30e9\u30a4\u30f3\u30b3\u30f3\u30d1\u30a4\u30e9\u30fc\u304c\u5fc5\u8981\u306a\u5834\u5408\u306f\u3001<a href=\"https:\/\/github.com\/JetBrains\/kotlin\/releases\/tag\/v1.6.20\" target=\"_blank\" rel=\"noopener\">GitHub \u306e\u30ea\u30ea\u30fc\u30b9\u30da\u30fc\u30b8<\/a>\u304b\u3089\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3067\u304d\u307e\u3059\u3002<\/p>\n<h3 id=\"if-you-run-into-any-problems\"><span id=\"If_you_run_into_any_problems\" class=\"ez-toc-section\"><\/span>\u554f\u984c\u767a\u751f\u6642\u306f\u4ee5\u4e0b\u306e\u5bfe\u5fdc\u3092\u304a\u9858\u3044\u3057\u307e\u3059<\/h3>\n<ul>\n<li><a href=\"http:\/\/kotlinlang.slack.com\/\" target=\"_blank\" rel=\"noopener\">Slack<\/a> \u3067\u652f\u63f4\u3092\u6c42\u3081\u308b\uff08<a href=\"https:\/\/surveys.jetbrains.com\/s3\/kotlin-slack-sign-up\" target=\"_blank\" rel=\"noopener\">\u62db\u5f85\u3092\u53d7\u3051\u3066\u304f\u3060\u3055\u3044<\/a>\uff09\u3002<\/li>\n<li>\u8ab2\u984c\u30c8\u30e9\u30c3\u30ab\u30fc <a href=\"https:\/\/youtrack.jetbrains.com\/issues\/KT\" target=\"_blank\" rel=\"noopener\">YouTrack<\/a> \u306b\u8ab2\u984c\u3092\u5831\u544a\u3059\u308b\u3002<\/li>\n<\/ul>\n<div style=\"background-color: #f1f6fe; margin-bottom: 2px; padding: 5px; margin-right: 0%; text-align: left; min-height: px;\">\n<p>\u6700\u65b0\u306e Kotlin \u6a5f\u80fd\u306b\u95a2\u3059\u308b\u60c5\u5831\u3092\u5165\u624b\u3057\u307e\u3057\u3087\u3046\uff01 \u3053\u306e\u8a18\u4e8b\u306e\u53f3\u5074\u306b\u3042\u308b\u30d5\u30a9\u30fc\u30e0\u306b\u3054\u5165\u529b\u3044\u305f\u3060\u304f\u3068\u3001Kotlin \u306e\u6700\u65b0\u60c5\u5831\u3092\u304a\u5c4a\u3051\u3057\u307e\u3059\u3002<\/p>\n<\/div>\n<h1 id=\"what-else-to-read-and-watch\">\u305d\u306e\u4ed6\u306e\u8a18\u4e8b\u3068\u52d5\u753b<\/h1>\n<ul>\n<li><a href=\"https:\/\/kotlinlang.org\/docs\/roadmap.html\" target=\"_blank\" rel=\"noopener\">Kotlin \u306e\u30ed\u30fc\u30c9\u30de\u30c3\u30d7<\/a><\/li>\n<li><a class=\"ek-link\" href=\"https:\/\/kotlinlang.org\/docs\/whatsnew1620.html\" target=\"_blank\" rel=\"noopener\">Kotlin 1.6.20 \u306e\u65b0\u6a5f\u80fd\uff08\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\uff09<\/a><\/li>\n<li><a href=\"https:\/\/kotlinlang.org\/docs\/compatibility-guide-16.html\" target=\"_blank\" rel=\"noopener\">Kotlin 1.6. \u306e\u4e92\u63db\u6027\u30ac\u30a4\u30c9<\/a><\/li>\n<li><a href=\"https:\/\/blog.jetbrains.com\/kotlin\/2021\/11\/kotlin-1-6-0-is-released\/\">Kotlin 1.6.0 \u304c\u30ea\u30ea\u30fc\u30b9\u3055\u308c\u307e\u3057\u305f\uff01<\/a><\/li>\n<\/ul>\n\n\n<p><strong>\u30aa\u30ea\u30b8\u30ca\u30eb\uff08\u82f1\u8a9e\uff09\u30d6\u30ed\u30b0\u6295\u7a3f\u306e\u4f5c\u8005\uff1a<\/strong><\/p>\n\n\n    <div class=\"about-author \">\n        <div class=\"about-author__box\">\n            <div class=\"row\">\n                <div class=\"about-author__box-img\">\n                    <img decoding=\"async\" src=\"https:\/\/secure.gravatar.com\/avatar\/?s=200&#038;r=g\" width=\"200\" height=\"200\" alt=\"\" loading=\"lazy\"  class=\"avatar avatar-200 wp-user-avatar wp-user-avatar-200 photo avatar-default\">\n                <\/div>\n                <div 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<\/div>\n","protected":false},"author":811,"featured_media":237310,"comment_status":"closed","ping_status":"closed","template":"","categories":[907],"tags":[671],"cross-post-tag":[],"acf":[],"_links":{"self":[{"href":"https:\/\/blog.jetbrains.com\/ja\/wp-json\/wp\/v2\/kotlin\/254670"}],"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=254670"}],"version-history":[{"count":10,"href":"https:\/\/blog.jetbrains.com\/ja\/wp-json\/wp\/v2\/kotlin\/254670\/revisions"}],"predecessor-version":[{"id":631850,"href":"https:\/\/blog.jetbrains.com\/ja\/wp-json\/wp\/v2\/kotlin\/254670\/revisions\/631850"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/blog.jetbrains.com\/ja\/wp-json\/wp\/v2\/media\/237310"}],"wp:attachment":[{"href":"https:\/\/blog.jetbrains.com\/ja\/wp-json\/wp\/v2\/media?parent=254670"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.jetbrains.com\/ja\/wp-json\/wp\/v2\/categories?post=254670"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.jetbrains.com\/ja\/wp-json\/wp\/v2\/tags?post=254670"},{"taxonomy":"cross-post-tag","embeddable":true,"href":"https:\/\/blog.jetbrains.com\/ja\/wp-json\/wp\/v2\/cross-post-tag?post=254670"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}