{"id":6326,"date":"2025-09-21T02:03:58","date_gmt":"2025-09-21T02:03:58","guid":{"rendered":"https:\/\/pokecon.jp\/job\/?p=6326"},"modified":"2025-09-21T02:03:58","modified_gmt":"2025-09-21T02:03:58","slug":"iosdc-japan-2025-%e3%82%a2%e3%83%b3%e3%83%89%e3%83%91%e3%83%83%e3%83%89swift%e3%82%af%e3%82%a4%e3%82%ba%e8%a7%a3%e8%aa%ac-day1-%e5%8d%88%e5%be%8c","status":"publish","type":"post","link":"https:\/\/pokecon.jp\/job\/6326\/","title":{"rendered":"iOSDC Japan 2025 \u30a2\u30f3\u30c9\u30d1\u30c3\u30c9Swift\u30af\u30a4\u30ba\u89e3\u8aac &#8211; Day1 \u5348\u5f8c"},"content":{"rendered":"\n<\/p>\n<div>\n<p>\u3053\u3093\u306b\u3061\u306f\u3001\u897f <a target=\"_blank\" href=\"https:\/\/x.com\/jrsaruo_tech\">@jrsaruo_tech<\/a> \u3067\u3059\u3002<\/p>\n<p>iOSDC Japan 2025 Day1 \u5f8c\u534a\u6226\u3067\u3059\uff01Day0\u304b\u3089\u6570\u3048\u308c\u3070\u3082\u3046\u6298\u308a\u8fd4\u3057\u3067\u3059\u306d\u3002<\/p>\n<p>\u30a2\u30f3\u30c9\u30d1\u30c3\u30c9\u306e\u30d6\u30fc\u30b9\u3067\u306f\u5f15\u304d\u7d9a\u304d\u30af\u30a4\u30ba\u3092\u51fa\u984c\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<ul>\n<li>Day0<\/li>\n<li>Day1 \u5348\u524d<\/li>\n<li>Day1 \u5348\u5f8c \u2190 \u672c\u8a18\u4e8b<\/li>\n<li>Day2 \u5348\u524d<\/li>\n<li>Day2 \u5348\u5f8c<\/li>\n<\/ul>\n<p>\u672c\u8a18\u4e8b\u3067\u306fDay1 \u5348\u5f8c\u306b\u51fa\u984c\u3057\u305f\u30af\u30a4\u30ba4\u984c\u3092\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n<p>\u305d\u308c\u305e\u308c\u306e\u89e3\u7b54\u3068\u89e3\u8aac\u306f\u30bb\u30af\u30b7\u30e7\u30f3\u3092\u9589\u3058\u3066\u3044\u308b\u306e\u3067\u3001\u307e\u3060\u89e3\u304b\u308c\u3066\u3044\u306a\u3044\u65b9\u306f\u305c\u3072\u30c1\u30e3\u30ec\u30f3\u30b8\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<p>\u203b \u30af\u30a4\u30ba\u3067\u4f7f\u7528\u3057\u3066\u3044\u308bSwift\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u306f6.1.2\u3001\u8a00\u8a9e\u30e2\u30fc\u30c9\u306f6\u3067\u3059\u3002<\/p>\n<pre class=\"code\" data-lang=\"\" data-unlink=\"\">% swift --version   \nswift-driver version: 1.120.5 Apple Swift version 6.1.2 (swiftlang-6.1.2.1.2 clang-1700.0.13.5)\nTarget: arm64-apple-macosx15.0<\/pre>\n<h2 id=\"Q1-\">Q1 \u2605\u2606\u2606\u2606\u2606<\/h2>\n<h3 id=\"\u554f\u984c\">\u554f\u984c<\/h3>\n<p><code>\/* ? *\/<\/code>\u306b\u5f53\u3066\u306f\u307e\u308b\u30b3\u30fc\u30c9\u3068\u3057\u3066\u6b63\u3057\u3044\u3082\u306e\u3092\u9078\u3093\u3067\u304f\u3060\u3055\u3044\u3002<\/p>\n<pre class=\"code lang-swift\" data-lang=\"swift\" data-unlink=\"\"><span class=\"synPreProc\">struct<\/span> <span class=\"synIdentifier\">Point<\/span> {\n    <span class=\"synPreProc\">var<\/span> <span class=\"synIdentifier\">x<\/span><span class=\"synSpecial\">:<\/span> <span class=\"synType\">Int<\/span>\n    <span class=\"synPreProc\">var<\/span> <span class=\"synIdentifier\">y<\/span><span class=\"synSpecial\">:<\/span> <span class=\"synType\">Int<\/span>\n}\n\n<span class=\"synPreProc\">func<\/span> <span class=\"synIdentifier\">move<\/span>(to destination<span class=\"synSpecial\">:<\/span> <span class=\"synType\">Point<\/span>) {  }\n\n<span class=\"synPreProc\">let<\/span> <span class=\"synIdentifier\">origin<\/span> <span class=\"synIdentifier\">=<\/span> Point(x<span class=\"synSpecial\">:<\/span> <span class=\"synConstant\">0<\/span>, y<span class=\"synSpecial\">:<\/span> <span class=\"synConstant\">0<\/span>)\n\n<\/pre>\n<p><summary>\n\u89e3\u7b54\u3068\u89e3\u8aac<\/p>\n<details\/><\/summary>\n<\/p>\n<h3 id=\"\u89e3\u7b54\">\u89e3\u7b54<\/h3>\n<p>B<\/p>\n<h3 id=\"\u89e3\u8aac\">\u89e3\u8aac<\/h3>\n<p>Swift\u3067\u306f\u95a2\u6570\u547c\u3073\u51fa\u3057\u306e\u969b\u306b\u5f15\u6570\u540d\uff08\u5f15\u6570\u30e9\u30d9\u30eb\uff09\u3092\u66f8\u304f\u3053\u3068\u304c\u5f37\u5236\u3055\u308c\u307e\u3059\u3002<\/p>\n<pre class=\"code lang-swift\" data-lang=\"swift\" data-unlink=\"\"><span class=\"synPreProc\">func<\/span> <span class=\"synIdentifier\">move<\/span>(destination<span class=\"synSpecial\">:<\/span> <span class=\"synType\">Point<\/span>) { <span class=\"synIdentifier\">...<\/span> }\n\n\nmove(destination<span class=\"synSpecial\">:<\/span> <span class=\"synType\">origin<\/span>)\n<\/pre>\n<p>\u305d\u3057\u3066\u3001\u95a2\u6570\u306e\u5ba3\u8a00\u5074\u3067\u305d\u306e\u547c\u3073\u51fa\u3057\u5074\u306b\u66f8\u304b\u305b\u308b\u5f15\u6570\u30e9\u30d9\u30eb\u3092\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<pre class=\"code lang-swift\" data-lang=\"swift\" data-unlink=\"\">\n<span class=\"synPreProc\">func<\/span> <span class=\"synIdentifier\">move<\/span>(to destination<span class=\"synSpecial\">:<\/span> <span class=\"synType\">Point<\/span>) {\n    \n    print(<span class=\"synConstant\">\"Move to:\"<\/span>, destination)\n}\n\n\nmove(to<span class=\"synSpecial\">:<\/span> <span class=\"synType\">origin<\/span>)\n<\/pre>\n<p>\u3053\u306e\u6a5f\u80fd\u306b\u3088\u308a\u3001Swift\u306eAPI\u306f&#8221;move to origin&#8221;\u306e\u3088\u3046\u306b\u82f1\u8a9e\u3068\u3057\u3066\u81ea\u7136\u306b\u8aad\u3080\u3053\u3068\u304c\u3067\u304d\u3001\u5f15\u6570\u306e\u5f79\u5272\u3092\u5206\u304b\u308a\u3084\u3059\u304f\u7c21\u6f54\u306b\u8868\u73fe\u3067\u304d\u307e\u3059\u3002\u95a2\u6570\u30b7\u30b0\u30cd\u30c1\u30e3\u3082&#8221;move to destination&#8221;\u3068\u8aad\u3081\u308b\u306e\u304c\u500b\u4eba\u7684\u306b\u306f\u597d\u304d\u3067\u3059\u3002<\/p>\n<h2 id=\"Q2-\">Q2 \u2605\u2605\u2606\u2606\u2606<\/h2>\n<h3 id=\"\u554f\u984c-1\">\u554f\u984c<\/h3>\n<p>\u6b21\u306e\u30b3\u30fc\u30c9\u306b\u304a\u3044\u3066\u3001\u5909\u6570<code>foo<\/code>\u306e\u578b\u3068\u3057\u3066\u6b63\u3057\u3044\u3082\u306e\u3092\u9078\u3093\u3067\u304f\u3060\u3055\u3044\u3002<\/p>\n<pre class=\"code lang-swift\" data-lang=\"swift\" data-unlink=\"\"><span class=\"synPreProc\">struct<\/span> <span class=\"synIdentifier\">Foo<\/span> {}\n\n<span class=\"synPreProc\">struct<\/span> <span class=\"synIdentifier\">Bar<\/span> {\n    <span class=\"synPreProc\">func<\/span> <span class=\"synIdentifier\">makeFoo<\/span>() <span class=\"synStatement\">throws<\/span> <span class=\"synSpecial\">-&gt;<\/span> <span class=\"synType\">Foo?<\/span> {\n        <span class=\"synConstant\">nil<\/span>\n    }\n}\n\n<span class=\"synPreProc\">func<\/span> <span class=\"synIdentifier\">makeFoo<\/span>(from bar<span class=\"synSpecial\">:<\/span> <span class=\"synType\">Bar?<\/span>) {\n    <span class=\"synPreProc\">let<\/span> <span class=\"synIdentifier\">foo<\/span> <span class=\"synIdentifier\">=<\/span> <span class=\"synStatement\">try<\/span>? bar?.makeFoo()\n}\n<\/pre>\n<p><summary>\n\u89e3\u7b54\u3068\u89e3\u8aac<\/p>\n<details\/><\/summary>\n<\/p>\n<h3 id=\"\u89e3\u7b54-1\">\u89e3\u7b54<\/h3>\n<p>A<\/p>\n<h3 id=\"\u89e3\u8aac-1\">\u89e3\u8aac<\/h3>\n<p>\u30aa\u30d7\u30b7\u30e7\u30ca\u30eb\u30c1\u30a7\u30fc\u30f3\u3084<code>try?<\/code>\u6f14\u7b97\u5b50\u304c\u30aa\u30d7\u30b7\u30e7\u30ca\u30eb\u3092\u30cd\u30b9\u30c8\u3055\u305b\u308b\u304b\u3069\u3046\u304b\u3001\u3068\u3044\u3046\u30af\u30a4\u30ba\u3067\u3059\u3002\u30aa\u30d7\u30b7\u30e7\u30ca\u30eb\u306e\u30cd\u30b9\u30c8\u3068\u306f\u3064\u307e\u308a<code>T??<\/code>\uff08<code>Optional<optional>&gt;<\/optional><\/code>\uff09\u306e\u3088\u3046\u306a\u72b6\u614b\u3067\u3059\u3002<\/p>\n<p>\u30aa\u30d7\u30b7\u30e7\u30ca\u30eb\u30c1\u30a7\u30fc\u30f3\u306f\u30aa\u30d7\u30b7\u30e7\u30ca\u30eb\u306e\u5024\u306e\u30d7\u30ed\u30d1\u30c6\u30a3\u30a2\u30af\u30bb\u30b9\u3084\u30e1\u30bd\u30c3\u30c9\u547c\u3073\u51fa\u3057\u306a\u3069\u3092\u30a2\u30f3\u30e9\u30c3\u30d7\u306a\u3057\u3067\u884c\u3048\u308b\u4ed5\u7d44\u307f\u3067\u3059\u3002\u30c9\u30c3\u30c8\u30a2\u30af\u30bb\u30b9\u306e\u76f4\u524d\u306b<code>?<\/code>\u3092\u4ed8\u3051\u308b\u3053\u3068\u3067\u884c\u3044\u307e\u3059\u3002<\/p>\n<pre class=\"code lang-swift\" data-lang=\"swift\" data-unlink=\"\"><span class=\"synPreProc\">let<\/span> <span class=\"synIdentifier\">property<\/span> <span class=\"synIdentifier\">=<\/span> optionalValue?.property\n<span class=\"synPreProc\">let<\/span> <span class=\"synIdentifier\">result<\/span> <span class=\"synIdentifier\">=<\/span> optionalValue?.method()\n<\/pre>\n<p>\u30aa\u30d7\u30b7\u30e7\u30ca\u30eb\u306e\u5024\u304c<code>nil<\/code>\u3067\u306a\u3051\u308c\u3070\u30d7\u30ed\u30d1\u30c6\u30a3\u3084\u30e1\u30bd\u30c3\u30c9\u306e\u547c\u3073\u51fa\u3057\u304c\u6210\u529f\u3057\u3001\u305d\u306e\u7d50\u679c\u3092\u53d7\u3051\u53d6\u308c\u307e\u3059\u3002\u30aa\u30d7\u30b7\u30e7\u30ca\u30eb\u306e\u5024\u304c<code>nil<\/code>\u3060\u3063\u305f\u5834\u5408\u306f\u547c\u3073\u51fa\u3057\u304c\u884c\u308f\u308c\u305a\u3001\u5f0f\u5168\u4f53\u304c<code>nil<\/code>\u3068\u3057\u3066\u8a55\u4fa1\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>\u305d\u3057\u3066\u305d\u306e\u5f0f\u5168\u4f53\u306e\u578b\u306f\u30aa\u30d7\u30b7\u30e7\u30ca\u30eb\u306b\u306a\u308a\u307e\u3059\u304c\u3001\u30d7\u30ed\u30d1\u30c6\u30a3\u3084\u30e1\u30bd\u30c3\u30c9\u81ea\u4f53\u304c\u30aa\u30d7\u30b7\u30e7\u30ca\u30eb\u306e\u5024\u3092\u8fd4\u3059\u3068\u3057\u3066\u3082\u30cd\u30b9\u30c8\u3057\u307e\u305b\u3093\u3002<\/p>\n<pre class=\"code lang-swift\" data-lang=\"swift\" data-unlink=\"\"><span class=\"synPreProc\">struct<\/span> <span class=\"synIdentifier\">A<\/span> {\n    <span class=\"synPreProc\">var<\/span> <span class=\"synIdentifier\">value<\/span><span class=\"synSpecial\">:<\/span> <span class=\"synType\">Int<\/span>\n    <span class=\"synPreProc\">var<\/span> <span class=\"synIdentifier\">optionalValue<\/span><span class=\"synSpecial\">:<\/span> <span class=\"synType\">Int?<\/span>\n}\n\n<span class=\"synPreProc\">func<\/span> <span class=\"synIdentifier\">useOptionalA<\/span>(_ a<span class=\"synSpecial\">:<\/span> <span class=\"synType\">A?<\/span>) {\n    <span class=\"synPreProc\">let<\/span> <span class=\"synIdentifier\">value<\/span><span class=\"synSpecial\">:<\/span> <span class=\"synType\">Int?<\/span> <span class=\"synIdentifier\">=<\/span> a?.value\n    <span class=\"synPreProc\">let<\/span> <span class=\"synIdentifier\">optionalValue<\/span><span class=\"synSpecial\">:<\/span> <span class=\"synType\">Int?<\/span> <span class=\"synIdentifier\">=<\/span> a?.optionalValue \n}\n<\/pre>\n<p>\u3088\u3063\u3066\u554f\u984c\u306e<code>bar?.makeFoo()<\/code>\u5358\u4f53\u3067\u898b\u308b\u3068\u305d\u306e\u5024\u306f<code>Foo?<\/code>\u578b\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n<pre class=\"code lang-swift\" data-lang=\"swift\" data-unlink=\"\"><span class=\"synPreProc\">let<\/span> <span class=\"synIdentifier\">foo<\/span><span class=\"synSpecial\">:<\/span> <span class=\"synType\">Foo?<\/span> <span class=\"synIdentifier\">=<\/span> <span class=\"synStatement\">try<\/span> bar?.makeFoo()\n<\/pre>\n<p>\u3053\u3053\u304b\u3089\u3055\u3089\u306b<code>try<\/code>\u3092<code>try?<\/code>\u306b\u5909\u66f4\u3057\u307e\u3059\u3002<\/p>\n<p><code>try?<\/code>\u6f14\u7b97\u5b50\u306f<code>throws<\/code>\u30d7\u30ed\u30d1\u30c6\u30a3\u3084\u95a2\u6570\u304c\u6295\u3052\u305f\u30a8\u30e9\u30fc\u3092<code>nil<\/code>\u306b\u5909\u63db\u3057\u3066\u304f\u308c\u307e\u3059\u3002<\/p>\n<pre class=\"code lang-swift\" data-lang=\"swift\" data-unlink=\"\"><span class=\"synPreProc\">func<\/span> <span class=\"synIdentifier\">doSomething<\/span>() <span class=\"synStatement\">throws<\/span> <span class=\"synSpecial\">-&gt;<\/span> <span class=\"synType\">Int<\/span> { <span class=\"synIdentifier\">...<\/span> }\n\n<span class=\"synPreProc\">let<\/span> <span class=\"synIdentifier\">result<\/span><span class=\"synSpecial\">:<\/span> <span class=\"synType\">Int?<\/span> <span class=\"synIdentifier\">=<\/span> <span class=\"synStatement\">try<\/span>? doSomething()\n\n\n\n<span class=\"synPreProc\">let<\/span> <span class=\"synIdentifier\">result<\/span><span class=\"synSpecial\">:<\/span> <span class=\"synType\">Int?<\/span>\n<span class=\"synStatement\">do<\/span> {\n    result <span class=\"synIdentifier\">=<\/span> <span class=\"synStatement\">try<\/span> doSomething()\n} <span class=\"synStatement\">catch<\/span> {\n    result <span class=\"synIdentifier\">=<\/span> <span class=\"synConstant\">nil<\/span>\n}\n<\/pre>\n<p><code>try?<\/code>\u6f14\u7b97\u5b50\u304c\u4ed8\u304f\u3068\u3001\u5f0f\u5168\u4f53\u306e\u578b\u306f\u30aa\u30d7\u30b7\u30e7\u30ca\u30eb\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u305d\u3057\u3066\u3053\u306e<code>try?<\/code>\u6f14\u7b97\u5b50\u3082\u5148\u307b\u3069\u3068\u540c\u69d8\u306b\u3001\u5143\u306e\u5f0f\u304c\u30aa\u30d7\u30b7\u30e7\u30ca\u30eb\u306e\u5024\u3092\u8fd4\u3059\u3068\u3057\u3066\u3082\u30cd\u30b9\u30c8\u3057\u307e\u305b\u3093\u3002<\/p>\n<p>\u3057\u305f\u304c\u3063\u3066\u3001\u554f\u984c\u306e<code>try? bar?.makeFoo()<\/code>\u306e\u578b\u306f<code>Foo?<\/code>\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u3061\u306a\u307f\u306b<code>try?<\/code>\u6f14\u7b97\u5b50\u306f\u53e4\u3044\u30d0\u30fc\u30b8\u30e7\u30f3\u306eSwift\u3067\u306f\u30aa\u30d7\u30b7\u30e7\u30ca\u30eb\u304c\u30cd\u30b9\u30c8\u3059\u308b\u4ed5\u69d8\u3060\u3063\u305f\u306e\u3067\u3059\u304c\u3001\u30aa\u30d7\u30b7\u30e7\u30ca\u30eb\u30c1\u30a7\u30fc\u30f3\u3084<code>as?<\/code>\u306e\u6319\u52d5\u3068\u306e\u4e00\u8cab\u6027\u3001\u307e\u305f\u5229\u4fbf\u6027\u306e\u89b3\u70b9\u304b\u3089Swift 5\u3067\u73fe\u5728\u306e\u4ed5\u69d8\u306b\u5909\u66f4\u3055\u308c\u307e\u3057\u305f\u3002<\/p>\n<p><a target=\"_blank\" href=\"https:\/\/github.com\/swiftlang\/swift-evolution\/blob\/main\/proposals\/0230-flatten-optional-try.md\">https:\/\/github.com\/swiftlang\/swift-evolution\/blob\/main\/proposals\/0230-flatten-optional-try.md<\/a><\/p>\n<h2 id=\"Q3-\">Q3 \u2605\u2605\u2605\u2605\u2606<\/h2>\n<h3 id=\"\u554f\u984c-2\">\u554f\u984c<\/h3>\n<p>\u6b21\u306e\u30b3\u30fc\u30c9\u306e\u30b3\u30f3\u30d1\u30a4\u30eb\u304c\u901a\u308b\u3088\u3046\u306a<code>perform<\/code>\u95a2\u6570\u306e\u5b9a\u7fa9\u3092\u3059\u3079\u3066\u9078\u3093\u3067\u304f\u3060\u3055\u3044\u3002<\/p>\n<pre class=\"code lang-swift\" data-lang=\"swift\" data-unlink=\"\"><span class=\"synPreProc\">func<\/span> <span class=\"synIdentifier\">doSomething<\/span>() <span class=\"synStatement\">throws<\/span> {}\n\n<span class=\"synPreProc\">func<\/span> <span class=\"synIdentifier\">usePerform<\/span>() <span class=\"synStatement\">throws<\/span> {\n    perform {\n        print(<span class=\"synConstant\">\"Performed\"<\/span>)\n    }\n    <span class=\"synStatement\">try<\/span> perform {\n        <span class=\"synStatement\">try<\/span> doSomething()\n    }\n}\n<\/pre>\n<ul>\n<li>\n<p>A<\/p>\n<pre><code class=\"``swift\">  func perform(_ body: () throws -&gt; Void) throws {\n      try body()\n  }\n<\/code><\/pre>\n<\/li>\n<li>\n<p>B<\/p>\n<pre><code class=\"``swift\">  func perform(_ body: () throws -&gt; Void) rethrows {\n      try body()\n  }\n<\/code><\/pre>\n<\/li>\n<li>\n<p>C<\/p>\n<pre><code class=\"``swift\">  func perform<e>(_ body: () throws(E) -&gt; Void) throws(E) where E: Error {\n      try body()\n  }\n<\/e><\/code><\/pre>\n<\/li>\n<li>\n<p>D<\/p>\n<pre><code class=\"``swift\">  func perform<e1 e2=\"\">(_ body: () throws(E1) -&gt; Void) throws(E2) where E1: Error, E2: Error {\n      try body()\n  }\n<\/e1><\/code><\/pre>\n<\/li>\n<\/ul>\n<p><summary>\n\u89e3\u7b54\u3068\u89e3\u8aac<\/p>\n<details\/><\/summary>\n<\/p>\n<h3 id=\"\u89e3\u7b54-2\">\u89e3\u7b54<\/h3>\n<p>B\u3001C<\/p>\n<h3 id=\"\u89e3\u8aac-2\">\u89e3\u8aac<\/h3>\n<p>\u307e\u305a\u554f\u984c\u306e<code>perform<\/code>\u95a2\u6570\u306e\u6027\u8cea\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"code lang-swift\" data-lang=\"swift\" data-unlink=\"\">\nperform {\n    print(<span class=\"synConstant\">\"Performed\"<\/span>)\n}\n\n\n<span class=\"synStatement\">try<\/span> perform {\n    <span class=\"synStatement\">try<\/span> doSomething()\n}\n<\/pre>\n<p>\u3069\u3061\u3089\u3082<code>perform<\/code>\u95a2\u6570\u3092\u547c\u3073\u51fa\u3059\u51e6\u7406\u3067\u3001\u5f15\u6570\u306b\u30af\u30ed\u30fc\u30b8\u30e3\u3092\u6e21\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u2460\u3067\u306f<code>perform<\/code>\u95a2\u6570\u306e\u5f15\u6570\u306b\u6e21\u3057\u305f\u30af\u30ed\u30fc\u30b8\u30e3\u5185\u3067<code>try<\/code>\u3082<code>throw<\/code>\u3082\u3057\u3066\u304a\u3089\u305a\u3001<code>perform<\/code>\u306e\u547c\u3073\u51fa\u3057\u81ea\u4f53\u306b\u3082<code>try<\/code>\u304c\u4ed8\u3044\u3066\u3044\u307e\u305b\u3093\u3002<\/p>\n<p>\u2461\u3067\u306f<code>perform<\/code>\u95a2\u6570\u306e\u5f15\u6570\u306b\u6e21\u3057\u305f\u30af\u30ed\u30fc\u30b8\u30e3\u5185\u3067<code>catch<\/code>\u7121\u3057\u306b<code>try<\/code>\u3057\u3066\u304a\u308a\u3001<code>perform<\/code>\u306e\u547c\u3073\u51fa\u3057\u81ea\u4f53\u306b\u3082<code>try<\/code>\u304c\u4ed8\u3044\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u3064\u307e\u308a\u3001<code>perform<\/code>\u95a2\u6570\u306f\u300c\u5f15\u6570\u306b\u6e21\u3057\u305f\u30af\u30ed\u30fc\u30b8\u30e3\u304c<code>throws<\/code>\u3067\u306a\u3051\u308c\u3070\u81ea\u8eab\u3082<code>throws<\/code>\u306b\u306f\u306a\u3089\u305a\u3001\u5f15\u6570\u306b\u6e21\u3057\u305f\u30af\u30ed\u30fc\u30b8\u30e3\u304c<code>throws<\/code>\u3067\u3042\u308c\u3070\u81ea\u8eab\u3082<code>throws<\/code>\u3068\u306a\u308b\u300d\u3068\u3044\u3046\u6027\u8cea\u3092\u6301\u3063\u3066\u3044\u307e\u3059\uff08\u53b3\u5bc6\u306b\u306fnon-throwing\u306a\u95a2\u6570\u306b\u3082<code>try<\/code>\u306f\u3064\u3051\u3089\u308c\u308b\u306e\u3067\u2461\u306e<code>perform<\/code>\u304c<code>throws<\/code>\u3067\u3042\u308b\u3068\u306f\u9650\u308a\u307e\u305b\u3093\u304c\u3001\u9078\u629e\u80a2\u306b\u305d\u306e\u3088\u3046\u306a\u5b9a\u7fa9\u306f\u306a\u3044\u305f\u3081\u7121\u8996\u3057\u307e\u3059\uff09\u3002<\/p>\n<p>\u3053\u306e\u6027\u8cea\u3092\u5b9f\u73fe\u3059\u308b\u306b\u306f2\u7a2e\u985e\u306e\u65b9\u6cd5\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<ul>\n<li><code>rethrows<\/code>\u3092\u5229\u7528\u3059\u308b\u65b9\u6cd5<\/li>\n<li>Typed throws\u3092\u5229\u7528\u3059\u308b\u65b9\u6cd5<\/li>\n<\/ul>\n<p>\u3067\u306f\u3001\u9078\u629e\u80a2\u30921\u3064\u305a\u3064\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n<h4 id=\"ANG\">A\uff1aNG<\/h4>\n<p><code>perform<\/code>\u95a2\u6570\u81ea\u4f53\u304c<code>throws<\/code>\u306b\u306a\u3063\u3066\u3044\u308b\u305f\u3081\u3001<code>perform<\/code>\u306e\u547c\u3073\u51fa\u3057\u306b\u306f\u5fc5\u305a<code>try<\/code>\u304c\u5fc5\u8981\u3067\u3059\u3002<br \/>\n\u3057\u305f\u304c\u3063\u3066\u2460\u306e\u30b3\u30f3\u30d1\u30a4\u30eb\u304c\u901a\u308a\u307e\u305b\u3093\u3002<\/p>\n<h4 id=\"BOK\">B\uff1aOK<\/h4>\n<p><code>perform<\/code>\u95a2\u6570\u304c<code>rethrows<\/code>\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u306f\u307e\u3055\u306b\u4eca\u56de\u306e\u3088\u3046\u306a\u632f\u308b\u821e\u3044\u3092\u5b9f\u73fe\u3059\u308b\u305f\u3081\u306b\u7528\u610f\u3055\u308c\u305f\u6a5f\u80fd\u3067\u3001\u300c\u5f15\u6570\u3067\u53d7\u3051\u53d6\u3063\u305f\u30af\u30ed\u30fc\u30b8\u30e3\u304c<code>throws<\/code>\u3067\u306a\u3051\u308c\u3070<code>perform<\/code>\u81ea\u8eab\u3082<code>throws<\/code>\u306b\u306f\u306a\u3089\u305a\u3001\u5f15\u6570\u3067\u53d7\u3051\u53d6\u3063\u305f\u30af\u30ed\u30fc\u30b8\u30e3\u304c<code>throws<\/code>\u3067\u3042\u308c\u3070<code>perform<\/code>\u81ea\u8eab\u3082<code>throws<\/code>\u3068\u306a\u308b\u300d\u3068\u3044\u3046\u6027\u8cea\u3092\u4e0e\u3048\u307e\u3059\u3002<\/p>\n<p>\u3057\u305f\u304c\u3063\u3066\u3053\u306e<code>perform<\/code>\u95a2\u6570\u306a\u3089\u30b3\u30f3\u30d1\u30a4\u30eb\u304c\u901a\u308a\u307e\u3059\u3002<\/p>\n<h4 id=\"COK\">C\uff1aOK<\/h4>\n<p>Swift 6\u3067\u5c0e\u5165\u3055\u308c\u305f<a target=\"_blank\" href=\"https:\/\/github.com\/swiftlang\/swift-evolution\/blob\/main\/proposals\/0413-typed-throws.md\">typed throws<\/a>\u3092\u5229\u7528\u3057\u305f\u95a2\u6570\u5b9a\u7fa9\u3067\u3059\u3002\u95a2\u6570\u306e\u8fd4\u308a\u5024\u578b\u3092\u5ba3\u8a00\u3059\u308b\u306e\u3068\u540c\u3058\u3088\u3046\u306b\u3001typed throws\u3067\u306f\u95a2\u6570\u304c\u6295\u3052\u308b\u30a8\u30e9\u30fc\u306e\u578b\u3092\u5ba3\u8a00\u3067\u304d\u307e\u3059\u3002<\/p>\n<pre class=\"code lang-swift\" data-lang=\"swift\" data-unlink=\"\"><span class=\"synPreProc\">func<\/span> <span class=\"synIdentifier\">foo<\/span>() <span class=\"synStatement\">throws<\/span>(CancellationError) {\n    \n    <span class=\"synStatement\">throw<\/span> CancellationError()\n}\n\n<span class=\"synStatement\">try<\/span> foo()\n<\/pre>\n<p>\u30a8\u30e9\u30fc\u306e\u578b\u3068\u3057\u3066<code>Never<\/code>\u3092\u6307\u5b9a\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002<code>Never<\/code>\u578b\u306f\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u4f5c\u308b\u3053\u3068\u304c\u3067\u304d\u306a\u3044\u306e\u3067\u3001<code>throws(Never)<\/code>\u306a\u95a2\u6570\u306f\u4f8b\u5916\u3092\u6295\u3052\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u305b\u3093\u3002\u305d\u306e\u305f\u3081 <strong><code>throws(Never)<\/code>\u306a\u95a2\u6570\u306fnon-throwing\u306a\u95a2\u6570\u3068\u3057\u3066\u6271\u3048\u308b<\/strong>\u3088\u3046\u306b\u306a\u3063\u3066\u304a\u308a\u3001\u547c\u3073\u51fa\u3057\u6642\u306b<code>try<\/code>\u3092\u3064\u3051\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<pre class=\"code lang-swift\" data-lang=\"swift\" data-unlink=\"\"><span class=\"synPreProc\">func<\/span> <span class=\"synIdentifier\">foo<\/span>() <span class=\"synStatement\">throws<\/span>(Never) {\n    \n    \n    print(<span class=\"synConstant\">\"cannot throw\"<\/span>)\n}\n\nfoo() \n<\/pre>\n<p>\u3055\u3089\u306b\u30a8\u30e9\u30fc\u578b\u306f\u30b8\u30a7\u30cd\u30ea\u30c3\u30af\u95a2\u6570\u306e\u578b\u30d1\u30e9\u30e1\u30fc\u30bf\u3068\u3057\u3066\u5ba3\u8a00\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002<br \/>\n\u305d\u308c\u3092\u5229\u7528\u3057\u305f\u306e\u304c\u9078\u629e\u80a2C\u306e<code>perform<\/code>\u95a2\u6570\u3067\u3059\u3002\u4ee5\u4e0b\u306b\u518d\u63b2\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"code lang-swift\" data-lang=\"swift\" data-unlink=\"\"><span class=\"synPreProc\">func<\/span> <span class=\"synIdentifier\">perform<\/span><span class=\"synSpecial\"><span class=\"synIdentifier\">E<\/span><span class=\"synSpecial\">&gt;<\/span>(_ body<span class=\"synSpecial\">: ()<\/span> <span class=\"synStatement\">throws<\/span>(E) <span class=\"synSpecial\">-&gt;<\/span> <span class=\"synType\">Void<\/span>) <span class=\"synStatement\">throws<\/span>(E) <span class=\"synStatement\">where<\/span> E<span class=\"synSpecial\">:<\/span> <span class=\"synType\">Error<\/span> {\n    <span class=\"synStatement\">try<\/span> body()\n}\n<\/span><\/pre>\n<p>\u3053\u306e<code>perform<\/code>\u95a2\u6570\u3067\u306f\u5f15\u6570\u3067\u53d7\u3051\u53d6\u3063\u305f<code>body<\/code>\u306e\u578b\u306b\u3088\u3063\u3066\u578b\u30d1\u30e9\u30e1\u30fc\u30bf<code>E<\/code>\u304c\u6c7a\u307e\u308a\u3001\u305d\u308c\u306b\u3088\u3063\u3066<code>perform<\/code>\u95a2\u6570\u81ea\u8eab\u306e\u6295\u3052\u5f97\u308b\u30a8\u30e9\u30fc\u578b\u304c\u6c7a\u307e\u308a\u307e\u3059\u3002<\/p>\n<p>\u5b9f\u969b\u306b\u578b\u30d1\u30e9\u30e1\u30fc\u30bf<code>E<\/code>\u304c\u3069\u306e\u3088\u3046\u306b\u63a8\u8ad6\u3055\u308c\u308b\u304b\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002\u307e\u305a\u306f\u2460\u306e\u4f8b\u3067\u3059\u3002<\/p>\n<pre class=\"code lang-swift\" data-lang=\"swift\" data-unlink=\"\">perform {\n    print(<span class=\"synConstant\">\"Performed\"<\/span>)\n}\n<\/pre>\n<p>\u3053\u306e\u4f8b\u3067\u306f\u5f15\u6570<code>body<\/code>\u306b\u6e21\u3059\u30af\u30ed\u30fc\u30b8\u30e3\u306f\u30a8\u30e9\u30fc\u3092\u6295\u3052\u307e\u305b\u3093\u3002\u3053\u306e\u3068\u304d\u578b\u30d1\u30e9\u30e1\u30fc\u30bf<code>E<\/code>\u306f<code>Never<\/code>\u3068\u63a8\u8ad6\u3055\u308c\u3001\u540c\u6642\u306b<code>perform<\/code>\u95a2\u6570\u3082<code>throws(Never)<\/code>\u3068\u306a\u308a\u307e\u3059\u3002\u3064\u307e\u308a\u4f8b\u5916\u304c\u6295\u3052\u3089\u308c\u308b\u3053\u3068\u306f\u306a\u3044\u306e\u3067\u3001<code>perform<\/code>\u95a2\u6570\u3092<code>try<\/code>\u7121\u3057\u3067\u547c\u3073\u51fa\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u5b9f\u969b\u3001<code>E == Never<\/code>\u306e\u3068\u304d\u306e<code>perform<\/code>\u95a2\u6570\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3069\u3046\u9811\u5f35\u3063\u3066\u3082\u30a8\u30e9\u30fc\u3092\u6295\u3052\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u305b\u3093\u3002\u578b\u306b\u5b88\u3089\u308c\u3066\u3044\u308b\u5b89\u5fc3\u611f\u304c\u3042\u308a\u307e\u3059\u306d\u3002<\/p>\n<pre class=\"code lang-swift\" data-lang=\"swift\" data-unlink=\"\">\n<span class=\"synPreProc\">func<\/span> <span class=\"synIdentifier\">perform<\/span><span class=\"synSpecial\"><span class=\"synIdentifier\">E<\/span><span class=\"synSpecial\">&gt;<\/span>(_ body<span class=\"synSpecial\">: ()<\/span> <span class=\"synStatement\">throws<\/span>(E) <span class=\"synSpecial\">-&gt;<\/span> <span class=\"synType\">Void<\/span>) <span class=\"synStatement\">throws<\/span>(E) <span class=\"synStatement\">where<\/span> E<span class=\"synSpecial\">:<\/span> <span class=\"synType\">Error<\/span> {\n    <span class=\"synStatement\">try<\/span> body() \n    <span class=\"synStatement\">throw<\/span> SomeError() \n    <span class=\"synStatement\">throw<\/span> SomeError() <span class=\"synStatement\">as!<\/span> <span class=\"synType\">E<\/span> \n}\n<\/span><\/pre>\n<p>\u6b21\u306b\u2461\u306e\u4f8b\u3092\u898b\u3066\u307f\u307e\u3059\u3002<\/p>\n<pre class=\"code lang-swift\" data-lang=\"swift\" data-unlink=\"\"><span class=\"synStatement\">try<\/span> perform {\n    <span class=\"synStatement\">try<\/span> doSomething()\n}\n<\/pre>\n<p>\u3053\u306e\u4f8b\u3067\u306f\u5f15\u6570<code>body<\/code>\u306b\u6e21\u3059\u30af\u30ed\u30fc\u30b8\u30e3\u5185\u3067<code>catch<\/code>\u305b\u305a\u306b<code>try<\/code>\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u3068\u304d\u578b\u30d1\u30e9\u30e1\u30fc\u30bf<code>E<\/code>\u306f<code>any Error<\/code>\u3068\u63a8\u8ad6\u3055\u308c\u3001\u540c\u6642\u306b<code>perform<\/code>\u95a2\u6570\u3082<code>throws(any Error)<\/code>\u3068\u306a\u308a\u307e\u3059\u3002\u3064\u307e\u308a<code>perform<\/code>\u95a2\u6570\u306f\u30a8\u30e9\u30fc\u3092\u6295\u3052\u5f97\u308b\u306e\u3067\u547c\u3073\u51fa\u3057\u6642\u306b<code>try<\/code>\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n<p>\u4ee5\u4e0a\u304b\u3089\u9078\u629e\u80a2C\u306e\u5b9a\u7fa9\u3082<code>perform<\/code>\u95a2\u6570\u306e\u6027\u8cea\u3092\u6e80\u305f\u3057\u3001\u30b3\u30f3\u30d1\u30a4\u30eb\u304c\u901a\u308a\u307e\u3059\u3002<\/p>\n<p>\u5f93\u6765<code>rethrows<\/code>\u3068\u3044\u3046\u5c02\u7528\u306e\u6a5f\u80fd\u3067\u5b9f\u73fe\u3055\u308c\u3066\u3044\u305f\u6027\u8cea\u304c\u3001\u65b0\u305f\u306b\u5c0e\u5165\u3055\u308c\u305ftyped throws\u3067\u3082\u81ea\u7136\u306b\u8868\u73fe\u3067\u304d\u308b\u3068\u3044\u3046\u306e\u304c\u9762\u767d\u3044\u3067\u3059\u306d\u3002<code>Never<\/code>\u578b\u3082\u3046\u307e\u304f\u306f\u307e\u3063\u3066\u3044\u3066\u8a2d\u8a08\u306e\u5999\u3092\u611f\u3058\u307e\u3059\u3002<\/p>\n<h4 id=\"DNG\">D\uff1aNG<\/h4>\n<p><code>perform<\/code>\u306f<code>throws(E2)<\/code>\u306a\u306e\u3067\u3001<code>try body()<\/code>\u3067\u6295\u3052\u3089\u308c\u5f97\u308b<code>E1<\/code>\u578b\u306e\u30a8\u30e9\u30fc\u3092\u6355\u6349\u305b\u305a\u305d\u306e\u307e\u307e\u4f1d\u64ad\u3055\u305b\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\uff01\u3068\u3044\u3046\u8a71\u3092\u3059\u308b\u3064\u3082\u308a\u3067\u4f5c\u554f\u3057\u305f\u306e\u3067\u3059\u304c\u3001\u5b9f\u969b\u306b\u8a66\u3057\u3066\u307f\u308b\u3068\u60f3\u5b9a\u3068\u7570\u306a\u308b\u30b3\u30f3\u30d1\u30a4\u30eb\u30a8\u30e9\u30fc\u304c\u51fa\u307e\u3057\u305f\u3002<\/p>\n<blockquote>\n<p>Generic parameter &#8216;E2&#8217; is not used in function signature<\/p>\n<\/blockquote>\n<p>\u578b\u30d1\u30e9\u30e1\u30fc\u30bf<code>E2<\/code>\u304c\u95a2\u6570\u30b7\u30b0\u30cd\u30c1\u30e3\u3067\u4f7f\u308f\u308c\u3066\u3044\u306a\u3044\u3068\u3044\u3046\u30a8\u30e9\u30fc\u3067\u3059\u3002<code>throws(E2)<\/code>\u3082\u95a2\u6570\u30b7\u30b0\u30cd\u30c1\u30e3\u306e\u4e00\u90e8\u3068\u3044\u3046\u7406\u89e3\u3067\u3044\u307e\u3057\u305f\u304c\uff08\u3082\u3057\u8a73\u3057\u304f\u3054\u5b58\u77e5\u306e\u65b9\u3044\u3089\u3063\u3057\u3083\u308c\u3070\u30b3\u30e1\u30f3\u30c8\u304f\u3060\u3055\u3044\uff09\u3001\u8981\u306f<code>E2<\/code>\u3092\u63a8\u8ad6\u3067\u304d\u306a\u3044\u3053\u3068\u304c\u554f\u984c\u3060\u3068\u601d\u308f\u308c\u307e\u3059\u3002<\/p>\n<p>\u8a71\u3092\u7c21\u5358\u306b\u3059\u308b\u305f\u3081\u306b\u30df\u30cb\u30de\u30eb\u306a\u4f8b\u3092\u8003\u3048\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n<pre class=\"code lang-swift\" data-lang=\"swift\" data-unlink=\"\"><span class=\"synPreProc\">func<\/span> <span class=\"synIdentifier\">foo<\/span><span class=\"synSpecial\"><span class=\"synIdentifier\">E<\/span><span class=\"synSpecial\">&gt;<\/span>() <span class=\"synStatement\">throws<\/span>(E) {}\n\nfoo()\n<span class=\"synStatement\">try<\/span> foo()\n<\/span><\/pre>\n<p>\u3053\u306e\u3068\u304d\u3001\u578b\u30d1\u30e9\u30e1\u30fc\u30bf<code>E<\/code>\u3092\u3069\u306e\u3088\u3046\u306b\u63a8\u8ad6\u3059\u308c\u3070\u826f\u3044\u3067\u3057\u3087\u3046\u304b\u3002<\/p>\n<p>\u547c\u3073\u51fa\u3057\u5074\u3067<code>try<\/code>\u304c\u4ed8\u3044\u3066\u3044\u306a\u3051\u308c\u3070<code>E == Never<\/code>\u3001<code>try<\/code>\u304c\u4ed8\u3044\u3066\u3044\u308c\u3070<code>E == any Error<\/code>\u3068\u8003\u3048\u3066\u3082\u826f\u3044\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u304c\u3001\u305d\u308c\u3060\u3068<code>foo()<\/code>\u3068\u66f8\u3044\u3066\u3082\u826f\u3044\u3057<code>try foo()<\/code>\u3068\u66f8\u3044\u3066\u3082\u826f\u3044\u3068\u3044\u3046\u3053\u3068\u306b\u306a\u308a\u3001\u5f93\u6765\u306e\u300c<code>throws<\/code>\u95a2\u6570\u306e\u547c\u3073\u51fa\u3057\u306b\u5fc5\u305a<code>try<\/code>\u304c\u5f37\u5236\u3055\u308c\u308b\u3053\u3068\u3067\u30a8\u30e9\u30fc\u304c\u6295\u3052\u3089\u308c\u308b\u304b\u3069\u3046\u304b\u3092\u8a8d\u77e5\u30fb\u610f\u8b58\u3057\u3084\u3059\u3044\u300d\u3068\u3044\u3046\u30e1\u30ea\u30c3\u30c8\u304c\u8584\u307e\u3063\u3066\u3057\u307e\u3044\u307e\u3059\u3002<\/p>\n<p>\u9006\u306b\u5e38\u306b<code>E == any Error<\/code>\u3068\u63a8\u8ad6\u3057\u3066<code>try<\/code>\u306a\u3057\u306e<code>foo()<\/code>\u3092\u30b3\u30f3\u30d1\u30a4\u30eb\u30a8\u30e9\u30fc\u306b\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u304c\u3001\u305d\u308c\u3060\u3068\u578b\u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u5c0e\u5165\u3059\u308b\u610f\u5473\u304c\u306a\u3044\u3067\u3059\u3088\u306d\u3002<\/p>\n<p>\u3053\u3046\u3057\u305f\u4e8b\u60c5\u304b\u3089\u578b\u30d1\u30e9\u30e1\u30fc\u30bf<code>E<\/code>\u304c<code>throws(E)<\/code>\u306e\u90e8\u5206\u306b\u3057\u304b\u73fe\u308c\u306a\u3044\u3088\u3046\u306a\u95a2\u6570\u5b9a\u7fa9\u306f\u8a31\u3055\u308c\u3066\u3044\u306a\u3044\u306e\u3060\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n<p>\u89e3\u7b54\u8005\u306e\u7686\u3055\u3093\u306e\u306a\u304b\u3067\u3053\u306e\u30b3\u30f3\u30d1\u30a4\u30eb\u30a8\u30e9\u30fc\u3092\u4e88\u60f3\u3067\u304d\u305f\u65b9\u306f\u3044\u305f\u3067\u3057\u3087\u3046\u304b\u3002\u79c1\u306b\u3068\u3063\u3066\u306f\u60f3\u5b9a\u5916\u306e\u7d50\u679c\u3060\u3063\u305f\u306e\u3067\u30d2\u30e4\u30c3\u3068\u3057\u307e\u3057\u305f\u304c\u3001\u3044\u305a\u308c\u306b\u305b\u3088\u30b3\u30f3\u30d1\u30a4\u30eb\u306f\u901a\u3089\u306a\u3044\u306e\u3067\u30af\u30a4\u30ba\u306e\u7b54\u3048\u306b\u5f71\u97ff\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u3088\u304b\u3063\u305f\u3002<\/p>\n<h2 id=\"Q4-\">Q4 \u2605\u2605\u2605\u2605\u2605<\/h2>\n<h3 id=\"\u554f\u984c-3\">\u554f\u984c<\/h3>\n<p>\u6b21\u306e\u306a\u304b\u3067\u30b3\u30f3\u30d1\u30a4\u30eb\u304c\u901a\u308b\u3082\u306e\u3092\u3059\u3079\u3066\u9078\u3093\u3067\u304f\u3060\u3055\u3044\u3002<\/p>\n<ul>\n<li>\n<p>A<\/p>\n<pre><code class=\"``swift\">  let makeArray: () -&gt; [Int] = { [0, 1, 2] }\n  let makeSequence: () -&gt; any Sequence = makeArray\n<\/code><\/pre>\n<\/li>\n<li>\n<p>B<\/p>\n<pre><code class=\"``swift\">  let makeSequence: () -&gt; any Sequence = { [0, 1, 2] }\n  let makeArray: () -&gt; [Int] = makeSequence\n<\/code><\/pre>\n<\/li>\n<li>\n<p>C<\/p>\n<pre><code class=\"``swift\">  let useArray: ([Int]) -&gt; Void = { _ in }\n  let useSequence: (any Sequence) -&gt; Void = useArray\n<\/code><\/pre>\n<\/li>\n<li>\n<p>D<\/p>\n<pre><code class=\"``swift\">  let useSequence: (any Sequence) -&gt; Void = { _ in }\n  let useArray: ([Int]) -&gt; Void = useSequence\n<\/code><\/pre>\n<\/li>\n<\/ul>\n<p><summary>\n\u89e3\u7b54\u3068\u89e3\u8aac<\/p>\n<details\/><\/summary>\n<\/p>\n<h3 id=\"\u89e3\u7b54-3\">\u89e3\u7b54<\/h3>\n<p>A\u3001D<\/p>\n<h3 id=\"\u89e3\u8aac-3\">\u89e3\u8aac<\/h3>\n<p>Swift\u306e\u30af\u30a4\u30ba\u3068\u3044\u3046\u3088\u308a\u306f\u3082\u3046\u5c11\u3057\u4e00\u822c\u6027\u306e\u9ad8\u3044\u3001\u578b\u306b\u95a2\u3059\u308b\u30af\u30a4\u30ba\u3067\u3059\u3002\u305f\u307e\u306b\u306f\u3053\u3046\u3044\u3046\u306e\u3082\u826f\u3044\u3067\u3059\u306d\u3002<\/p>\n<h4 id=\"AOK\">A\uff1aOK<\/h4>\n<pre class=\"code lang-swift\" data-lang=\"swift\" data-unlink=\"\"><span class=\"synPreProc\">let<\/span> <span class=\"synIdentifier\">makeArray<\/span><span class=\"synSpecial\">: ()<\/span> <span class=\"synSpecial\">-&gt;<\/span> <span class=\"synSpecial\">[<\/span><span class=\"synType\">Int<\/span><span class=\"synSpecial\">]<\/span> <span class=\"synIdentifier\">=<\/span> { [<span class=\"synConstant\">0<\/span>, <span class=\"synConstant\">1<\/span>, <span class=\"synConstant\">2<\/span>] }\n<span class=\"synPreProc\">let<\/span> <span class=\"synIdentifier\">makeSequence<\/span><span class=\"synSpecial\">: ()<\/span> <span class=\"synSpecial\">-&gt;<\/span> <span class=\"synType\">any<\/span> Sequence <span class=\"synIdentifier\">=<\/span> makeArray\n<\/pre>\n<p>\u3053\u308c\u306f\u30b3\u30f3\u30d1\u30a4\u30eb\u304c\u901a\u308a\u307e\u3059\u3002\u9806\u3092\u8ffd\u3063\u3066\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n<p>\u307e\u305a\u3001<code>[Int]<\/code>\u306f<code>Sequence<\/code>\u30d7\u30ed\u30c8\u30b3\u30eb\u306b\u9069\u5408\u3057\u3066\u3044\u308b\u306e\u3067\u3001<code>any Sequence<\/code>\u306e\u30b5\u30d6\u30bf\u30a4\u30d7\u3067\u3059\u3002\u4ee5\u4e0b\u306e\u30b3\u30f3\u30d1\u30a4\u30eb\u304c\u901a\u308a\u307e\u3059\u3002<\/p>\n<pre class=\"code lang-swift\" data-lang=\"swift\" data-unlink=\"\"><span class=\"synPreProc\">let<\/span> <span class=\"synIdentifier\">elements<\/span><span class=\"synSpecial\">:<\/span> <span class=\"synType\">any<\/span> Sequence <span class=\"synIdentifier\">=<\/span> [<span class=\"synConstant\">0<\/span>, <span class=\"synConstant\">1<\/span>, <span class=\"synConstant\">2<\/span>] \n\n\nelements.forEach { element <span class=\"synStatement\">in<\/span>\n    print(element)\n}\n<\/pre>\n<p><code>[0, 1, 2]<\/code>\u3092<code>makeArray()<\/code>\u306b\u5909\u3048\u3066\u307f\u307e\u3059\u3002\u3053\u308c\u3082\u5f53\u7136\u30b3\u30f3\u30d1\u30a4\u30eb\u304c\u901a\u308a\u307e\u3059\u306d\u3002<\/p>\n<pre class=\"code lang-swift\" data-lang=\"swift\" data-unlink=\"\"><span class=\"synPreProc\">let<\/span> <span class=\"synIdentifier\">elements<\/span><span class=\"synSpecial\">:<\/span> <span class=\"synType\">any<\/span> Sequence <span class=\"synIdentifier\">=<\/span> makeArray() \n<\/pre>\n<p>\u3064\u307e\u308a\u3001<code>makeArray<\/code>\u306f\u300c<code>any Sequence<\/code>\u3092\u8fd4\u3059\u95a2\u6570\u300d\u3068\u6349\u3048\u3066\u3082\u7834\u7dbb\u3057\u306a\u3044\u308f\u3051\u3067\u3059\u3002\u3057\u305f\u304c\u3063\u3066<code>() -&gt; any Sequence<\/code>\u578b\u306e\u30af\u30ed\u30fc\u30b8\u30e3\u3068\u3057\u3066\u6271\u3046\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<pre class=\"code lang-swift\" data-lang=\"swift\" data-unlink=\"\"><span class=\"synPreProc\">let<\/span> <span class=\"synIdentifier\">makeSequence<\/span><span class=\"synSpecial\">: ()<\/span> <span class=\"synSpecial\">-&gt;<\/span> <span class=\"synType\">any<\/span> Sequence <span class=\"synIdentifier\">=<\/span> makeArray \n<span class=\"synPreProc\">let<\/span> <span class=\"synIdentifier\">elements<\/span><span class=\"synSpecial\">:<\/span> <span class=\"synType\">any<\/span> Sequence <span class=\"synIdentifier\">=<\/span> makeSequence()\n<\/pre>\n<h4 id=\"BNG\">B\uff1aNG<\/h4>\n<pre class=\"code lang-swift\" data-lang=\"swift\" data-unlink=\"\"><span class=\"synPreProc\">let<\/span> <span class=\"synIdentifier\">makeSequence<\/span><span class=\"synSpecial\">: ()<\/span> <span class=\"synSpecial\">-&gt;<\/span> <span class=\"synType\">any<\/span> Sequence <span class=\"synIdentifier\">=<\/span> { [<span class=\"synConstant\">0<\/span>, <span class=\"synConstant\">1<\/span>, <span class=\"synConstant\">2<\/span>] }\n<span class=\"synPreProc\">let<\/span> <span class=\"synIdentifier\">makeArray<\/span><span class=\"synSpecial\">: ()<\/span> <span class=\"synSpecial\">-&gt;<\/span> <span class=\"synSpecial\">[<\/span><span class=\"synType\">Int<\/span><span class=\"synSpecial\">]<\/span> <span class=\"synIdentifier\">=<\/span> makeSequence\n<\/pre>\n<p>\u4e00\u898b\u554f\u984c\u306a\u3055\u305d\u3046\u306b\u898b\u3048\u307e\u3059\u304c\u3001<code>makeSequence<\/code>\u304c<code>[0, 1, 2]<\/code>\u3092\u8fd4\u3059\u3068\u306f\u9650\u308a\u307e\u305b\u3093\u3002\u4f8b\u3048\u3070<code>[\"a\", \"b\", \"c\"]<\/code>\u3092\u8fd4\u3059\u3068\u3057\u305f\u3089\u3069\u3046\u3067\u3057\u3087\u3046\u304b\uff1f<\/p>\n<pre class=\"code lang-swift\" data-lang=\"swift\" data-unlink=\"\"><span class=\"synPreProc\">let<\/span> <span class=\"synIdentifier\">makeSequence<\/span><span class=\"synSpecial\">: ()<\/span> <span class=\"synSpecial\">-&gt;<\/span> <span class=\"synType\">any<\/span> Sequence <span class=\"synIdentifier\">=<\/span> { [<span class=\"synConstant\">\"a\"<\/span>, <span class=\"synConstant\">\"b\"<\/span>, <span class=\"synConstant\">\"c\"<\/span>] }\n<span class=\"synPreProc\">let<\/span> <span class=\"synIdentifier\">makeArray<\/span><span class=\"synSpecial\">: ()<\/span> <span class=\"synSpecial\">-&gt;<\/span> <span class=\"synSpecial\">[<\/span><span class=\"synType\">Int<\/span><span class=\"synSpecial\">]<\/span> <span class=\"synIdentifier\">=<\/span> makeSequence\n<span class=\"synPreProc\">let<\/span> <span class=\"synIdentifier\">numbers<\/span><span class=\"synSpecial\">:<\/span> <span class=\"synSpecial\">[<\/span><span class=\"synType\">Int<\/span><span class=\"synSpecial\">]<\/span> <span class=\"synIdentifier\">=<\/span> makeArray() \n<\/pre>\n<p><code>[Int]<\/code>\u578b\u306e\u5909\u6570\u306b<code>[\"a\", \"b\", \"c\"]<\/code>\u304c\u4ee3\u5165\u3055\u308c\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u306d\u3002\u3053\u308c\u3067\u306f\u578b\u304c\u7834\u7dbb\u3057\u3066\u3057\u307e\u3046\u306e\u3067\u3001\u30b3\u30f3\u30d1\u30a4\u30eb\u30a8\u30e9\u30fc\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<h4 id=\"CNG\">C\uff1aNG<\/h4>\n<pre class=\"code lang-swift\" data-lang=\"swift\" data-unlink=\"\"><span class=\"synPreProc\">let<\/span> <span class=\"synIdentifier\">useArray<\/span><span class=\"synSpecial\">: ([<\/span><span class=\"synType\">Int<\/span><span class=\"synSpecial\">])<\/span> <span class=\"synSpecial\">-&gt;<\/span> <span class=\"synType\">Void<\/span> <span class=\"synIdentifier\">=<\/span> { _ <span class=\"synStatement\">in<\/span> }\n<span class=\"synPreProc\">let<\/span> <span class=\"synIdentifier\">useSequence<\/span><span class=\"synSpecial\">: (<\/span><span class=\"synType\">any Sequence<\/span><span class=\"synSpecial\">)<\/span> <span class=\"synSpecial\">-&gt;<\/span> <span class=\"synType\">Void<\/span> <span class=\"synIdentifier\">=<\/span> useArray\n<\/pre>\n<p>A\u304c\u901a\u308b\u306a\u3089\u306a\u3093\u3068\u306a\u304f\u3053\u308c\u3082\u901a\u308a\u305d\u3046\u306b\u898b\u3048\u307e\u3059\u304c\u3001\u4ee5\u4e0b\u306e\u30b3\u30fc\u30c9\u3092\u898b\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<pre class=\"code lang-swift\" data-lang=\"swift\" data-unlink=\"\"><span class=\"synPreProc\">let<\/span> <span class=\"synIdentifier\">useArray<\/span><span class=\"synSpecial\">: ([<\/span><span class=\"synType\">Int<\/span><span class=\"synSpecial\">])<\/span> <span class=\"synSpecial\">-&gt;<\/span> <span class=\"synType\">Void<\/span> <span class=\"synIdentifier\">=<\/span> { numbers <span class=\"synStatement\">in<\/span>\n    print(numbers.map { <span class=\"synIdentifier\">$0<\/span> <span class=\"synIdentifier\">*<\/span> <span class=\"synConstant\">2<\/span> })\n}\n<span class=\"synPreProc\">let<\/span> <span class=\"synIdentifier\">useSequence<\/span><span class=\"synSpecial\">: (<\/span><span class=\"synType\">any Sequence<\/span><span class=\"synSpecial\">)<\/span> <span class=\"synSpecial\">-&gt;<\/span> <span class=\"synType\">Void<\/span> <span class=\"synIdentifier\">=<\/span> useArray\nuseSequence([<span class=\"synConstant\">\"a\"<\/span>, <span class=\"synConstant\">\"b\"<\/span>, <span class=\"synConstant\">\"c\"<\/span>])\n<\/pre>\n<p><code>useSequence<\/code>\u306e\u5f15\u6570\u306f<code>any Sequence<\/code>\u578b\u306a\u306e\u3067\u3001\u5f53\u7136<code>[\"a\", \"b\", \"c\"]<\/code>\u306e\u3088\u3046\u306a\u5024\u3082\u53d7\u3051\u53d6\u308c\u307e\u3059\u3002\u3068\u3053\u308d\u304c\u5b9f\u969b\u306b\u306f<code>useArray<\/code>\u3068\u3044\u3046<code>[Int]<\/code>\u3057\u304b\u53d7\u3051\u4ed8\u3051\u306a\u3044\u95a2\u6570\u304c\u5165\u3063\u3066\u3044\u308b\u308f\u3051\u3067\u3059\u3002\u3053\u308c\u3082\u578b\u304c\u7834\u7dbb\u3057\u3066\u3057\u307e\u3063\u3066\u3044\u307e\u3059\u306d\u3002<code>numbers<\/code>\u306b<code>[\"a\", \"b\", \"c\"]<\/code>\u304c\u5165\u3063\u305f\u72b6\u614b\u3067<code>numbers.map { $0 * 2 }<\/code>\u304c\u5b9f\u884c\u3055\u308c\u3066\u3057\u307e\u3046\u3053\u3068\u3092\u8003\u3048\u308b\u3068\u6050\u6016\u3067\u591c\u3082\u7720\u308c\u307e\u305b\u3093\u3002<\/p>\n<p>\u3068\u3044\u3046\u308f\u3051\u3067\u3053\u308c\u3082\u30b3\u30f3\u30d1\u30a4\u30eb\u30a8\u30e9\u30fc\u304c\u51fa\u308b\u3088\u3046\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002\u5b89\u5fc3\u3057\u3066\u7720\u3063\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<h4 id=\"DOK\">D\uff1aOK<\/h4>\n<pre class=\"code lang-swift\" data-lang=\"swift\" data-unlink=\"\"><span class=\"synPreProc\">let<\/span> <span class=\"synIdentifier\">useSequence<\/span><span class=\"synSpecial\">: (<\/span><span class=\"synType\">any Sequence<\/span><span class=\"synSpecial\">)<\/span> <span class=\"synSpecial\">-&gt;<\/span> <span class=\"synType\">Void<\/span> <span class=\"synIdentifier\">=<\/span> { _ <span class=\"synStatement\">in<\/span> }\n<span class=\"synPreProc\">let<\/span> <span class=\"synIdentifier\">useArray<\/span><span class=\"synSpecial\">: ([<\/span><span class=\"synType\">Int<\/span><span class=\"synSpecial\">])<\/span> <span class=\"synSpecial\">-&gt;<\/span> <span class=\"synType\">Void<\/span> <span class=\"synIdentifier\">=<\/span> useSequence\n<\/pre>\n<p><code>useArray<\/code>\u306f<code>[Int]<\/code>\u3092\u53d7\u3051\u53d6\u3063\u3066\u4f55\u304b\u3092\u3057\u307e\u3059\u3002\u5b9f\u969b\u306b\u306f<code>useSequence<\/code>\u304c<code>[Int]<\/code>\u3092\u53d7\u3051\u53d6\u308b\u308f\u3051\u3067\u3059\u304c\u3001<code>useSequence<\/code>\u306f<code>any Sequence<\/code>\u3092\u53d7\u3051\u53d6\u308c\u308b\u306e\u3067\u3001\u578b\u304c\u7834\u7dbb\u3057\u307e\u305b\u3093\u3002<\/p>\n<pre class=\"code lang-swift\" data-lang=\"swift\" data-unlink=\"\"><span class=\"synPreProc\">let<\/span> <span class=\"synIdentifier\">useSequence<\/span><span class=\"synSpecial\">: (<\/span><span class=\"synType\">any Sequence<\/span><span class=\"synSpecial\">)<\/span> <span class=\"synSpecial\">-&gt;<\/span> <span class=\"synType\">Void<\/span> <span class=\"synIdentifier\">=<\/span> { elements <span class=\"synStatement\">in<\/span>\n    elements.forEach { element <span class=\"synStatement\">in<\/span>\n        print(element)\n    }\n}\n<span class=\"synPreProc\">let<\/span> <span class=\"synIdentifier\">useArray<\/span><span class=\"synSpecial\">: ([<\/span><span class=\"synType\">Int<\/span><span class=\"synSpecial\">])<\/span> <span class=\"synSpecial\">-&gt;<\/span> <span class=\"synType\">Void<\/span> <span class=\"synIdentifier\">=<\/span> useSequence\nuseArray([<span class=\"synConstant\">0<\/span>, <span class=\"synConstant\">1<\/span>, <span class=\"synConstant\">2<\/span>]) \n<\/pre>\n<p>\u3057\u305f\u304c\u3063\u3066D\u306f\u30b3\u30f3\u30d1\u30a4\u30eb\u304c\u901a\u308a\u307e\u3059\u3002<\/p>\n<p><code>[Int]<\/code>\u306f<code>any Sequence<\/code>\u306e\u30b5\u30d6\u30bf\u30a4\u30d7\u3067\u3042\u308b\u4e00\u65b9\u3001<code>([Int]) -&gt; Void<\/code>\u3068<code>(any Sequence) -&gt; Void<\/code>\u3067\u306f\u30b5\u30d6\u30bf\u30a4\u30d7\u95a2\u4fc2\u304c\u9006\u8ee2\u3059\u308b\u306e\u306f\u9762\u767d\u3044\u3067\u3059\u306d\u3002\u3053\u3053\u3089\u3078\u3093\u306e\u8a71\u306f\u5171\u5909\u6027\uff08covariant\uff09\u3068\u53cd\u5909\u6027\uff08contravariant\uff09\u306b\u3064\u3044\u3066\u8abf\u3079\u308b\u3068\u8272\u3005\u51fa\u3066\u304f\u308b\u306e\u3067\u8208\u5473\u306e\u3042\u308b\u65b9\u306f\u8abf\u3079\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<p>Day1 \u5348\u5f8c\u306e\u30af\u30a4\u30ba\u89e3\u8aac\u3067\u3057\u305f\u3002\u3042\u306a\u305f\u306f\u4f55\u554f\u6b63\u89e3\u3067\u304d\u307e\u3057\u305f\u304b\uff1f<\/p>\n<p>\u660e\u65e5\u306f\u65e9\u304f\u3082\u6700\u7d42\u65e5\u3067\u3059\u306d\u3002\u660e\u65e5\u3082\u5348\u524d\u3001\u5348\u5f8c\u3068\u65b0\u3057\u3044\u30af\u30a4\u30ba\u3092\u51fa\u984c\u3059\u308b\u306e\u3067\u305c\u3072\u307e\u305f\u30a2\u30f3\u30c9\u30d1\u30c3\u30c9\u30d6\u30fc\u30b9\u307e\u3067\u904a\u3073\u306b\u304d\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<p>\u660e\u65e5\u306fTrack B\u306b\u306611:25\u3088\u308a\u300e<a target=\"_blank\" href=\"https:\/\/fortee.jp\/iosdc-japan-2025\/proposal\/324484f6-bc04-4c3d-ada6-f83bab0dd114\">\u30cd\u30a4\u30c6\u30a3\u30d6\u88fd\u30ac\u30f3\u30c8\u30c1\u30e3\u30fc\u30c8UI\u3092\u4f5c\u3063\u3066\u5b66\u3076UICollectionViewLayout\u306e\u5a01\u529b<\/a>\u300f\u3068\u3044\u3046\u30bf\u30a4\u30c8\u30eb\u3067\u767b\u58c7\u3057\u307e\u3059\u306e\u3067\u3001\u305d\u3061\u3089\u3082\u305c\u3072\u304a\u8d8a\u3057\u304f\u3060\u3055\u3044\u3002\u30d6\u30fc\u30b9\u3067\u306fANDPAD\u30a2\u30d7\u30ea\u3082\u5c55\u793a\u3057\u3066\u3044\u308b\u306e\u3067\u3001\u30cd\u30a4\u30c6\u30a3\u30d6\u306e\u30ac\u30f3\u30c8\u30c1\u30e3\u30fc\u30c8UI\u3092\u4e00\u8db3\u65e9\u304f\u89e6\u3063\u3066\u307f\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3088\u3002<\/p>\n<p><iframe src=\"https:\/\/hatenablog-parts.com\/embed?url=https%3A%2F%2Ffortee.jp%2Fiosdc-japan-2025%2Fproposal%2F324484f6-bc04-4c3d-ada6-f83bab0dd114\" title=\"\u30cd\u30a4\u30c6\u30a3\u30d6\u88fd\u30ac\u30f3\u30c8\u30c1\u30e3\u30fc\u30c8UI\u3092\u4f5c\u3063\u3066\u5b66\u3076UICollectionViewLayout\u306e\u5a01\u529b\" class=\"embed-card embed-webcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 155px; max-width: 500px; margin: 10px 0px;\" loading=\"lazy\"><\/iframe><cite class=\"hatena-citation\"><a target=\"_blank\" href=\"https:\/\/fortee.jp\/iosdc-japan-2025\/proposal\/324484f6-bc04-4c3d-ada6-f83bab0dd114\">fortee.jp<\/a><\/cite><\/p>\n<p>\u3055\u3089\u306bLT\u5927\u4f1a\u306e\u5f8c\u534a\u6226\u306b\u306f\u5f0a\u793e\u3084\u307e\u3072\u308d <a target=\"_blank\" href=\"https:\/\/x.com\/yamahiro248\">@yamahiro248<\/a> \u304c\u767b\u58c7\u3057\u307e\u3059\u3002\u3053\u3061\u3089\u3082\u304a\u697d\u3057\u307f\u306b\uff01<\/p>\n<p><iframe src=\"https:\/\/hatenablog-parts.com\/embed?url=https%3A%2F%2Ffortee.jp%2Fiosdc-japan-2025%2Fproposal%2Fecccc3fc-9aff-4c2f-b050-81da240dc680\" title=\"iOS\u2192Flutter\u2192iOS\u5e30\u9084\uff1a\u6d88\u3048\u306a\u3044Flutter\u306e\u50b7\u8de1\" class=\"embed-card embed-webcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 155px; max-width: 500px; margin: 10px 0px;\" loading=\"lazy\"><\/iframe><cite class=\"hatena-citation\"><a target=\"_blank\" href=\"https:\/\/fortee.jp\/iosdc-japan-2025\/proposal\/ecccc3fc-9aff-4c2f-b050-81da240dc680\">fortee.jp<\/a><\/cite><\/p>\n<p>\u4ee5\u4e0a\u3001\u304a\u8aad\u307f\u3044\u305f\u3060\u304d\u3042\u308a\u304c\u3068\u3046\u3054\u3056\u3044\u307e\u3057\u305f\uff01<\/p>\n<\/div>\n<p><script>(function(d, s, id) {\n  var js, fjs = d.getElementsByTagName(s)[0];\n  if (d.getElementById(id)) return;\n  js = d.createElement(s); js.id = id;\n  js.src = \"\/\/connect.facebook.net\/ja_JP\/sdk.js#xfbml=1&appId=719729204785177&version=v17.0\";\n  fjs.parentNode.insertBefore(js, fjs);\n}(document, 'script', 'facebook-jssdk'));<\/script><br \/>\n<br \/>\n<br \/><a href=\"https:\/\/tech.andpad.co.jp\/entry\/2025\/09\/21\/095019\">\u5143\u306e\u8a18\u4e8b\u3092\u78ba\u8a8d\u3059\u308b <\/a><\/p>\n","protected":false},"excerpt":{"rendered":"\u3053\u3093\u306b\u3061\u306f\u3001\u897f @jrsaruo_tech \u3067\u3059\u3002 iOSDC Japan 2025 Day1 \u5f8c\u534a\u6226\u3067\u3059\uff01Day0\u304b\u3089\u6570\u3048\u308c\u3070\u3082\u3046\u6298\u308a\u8fd4\u3057\u3067\u3059\u306d\u3002 \u30a2\u30f3\u30c9\u30d1\u30c3\u30c9\u306e\u30d6\u30fc\u30b9\u3067\u306f\u5f15\u304d\u7d9a\u304d\u30af\u30a4\u30ba\u3092\u51fa\u984c\u3057\u3066\u3044\u307e\u3059\u3002 Day0 D [&hellip;]","protected":false},"author":1,"featured_media":6327,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[4],"tags":[],"class_list":["post-6326","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-company-tec"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>iOSDC Japan 2025 \u30a2\u30f3\u30c9\u30d1\u30c3\u30c9Swift\u30af\u30a4\u30ba\u89e3\u8aac - Day1 \u5348\u5f8c - \u30dd\u30b1\u30b3\u30f3<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/tech.andpad.co.jp\/entry\/2025\/09\/21\/095019\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"iOSDC Japan 2025 \u30a2\u30f3\u30c9\u30d1\u30c3\u30c9Swift\u30af\u30a4\u30ba\u89e3\u8aac - Day1 \u5348\u5f8c - \u30dd\u30b1\u30b3\u30f3\" \/>\n<meta property=\"og:description\" content=\"\u3053\u3093\u306b\u3061\u306f\u3001\u897f @jrsaruo_tech \u3067\u3059\u3002 iOSDC Japan 2025 Day1 \u5f8c\u534a\u6226\u3067\u3059\uff01Day0\u304b\u3089\u6570\u3048\u308c\u3070\u3082\u3046\u6298\u308a\u8fd4\u3057\u3067\u3059\u306d\u3002 \u30a2\u30f3\u30c9\u30d1\u30c3\u30c9\u306e\u30d6\u30fc\u30b9\u3067\u306f\u5f15\u304d\u7d9a\u304d\u30af\u30a4\u30ba\u3092\u51fa\u984c\u3057\u3066\u3044\u307e\u3059\u3002 Day0 D [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/tech.andpad.co.jp\/entry\/2025\/09\/21\/095019\" \/>\n<meta property=\"og:site_name\" content=\"\u30dd\u30b1\u30b3\u30f3\" \/>\n<meta property=\"article:published_time\" content=\"2025-09-21T02:03:58+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/pokecon.jp\/job\/wp-content\/uploads\/2025\/09\/https3A2F2Fcdn-ak.f.st-hatena.com2Fimages2Ffotolife2Fs2Fsezemi2F202509212F20250921094724.pn.png\" \/>\n\t<meta property=\"og:image:width\" content=\"1300\" \/>\n\t<meta property=\"og:image:height\" content=\"683\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" 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