{"id":4792,"date":"2023-08-27T13:01:06","date_gmt":"2023-08-27T04:01:06","guid":{"rendered":"https:\/\/www.wetch.co.jp\/note\/?p=4792"},"modified":"2023-08-27T13:01:07","modified_gmt":"2023-08-27T04:01:07","slug":"%e6%88%91%e6%b5%81flutter%e5%ad%a6%e7%bf%92%e3%82%b9%e3%83%86%e3%83%83%e3%83%97%ef%bc%88%ef%bc%93%ef%bc%89freezed","status":"publish","type":"post","link":"https:\/\/www.wetch.co.jp\/note\/%e6%88%91%e6%b5%81flutter%e5%ad%a6%e7%bf%92%e3%82%b9%e3%83%86%e3%83%83%e3%83%97%ef%bc%88%ef%bc%93%ef%bc%89freezed\/","title":{"rendered":"\u6211\u6d41Flutter\u5b66\u7fd2\u30b9\u30c6\u30c3\u30d7\uff08\uff13\uff09Freezed"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">\u524d\u56de\u306e\u6295\u7a3f\uff08<strong><a href=\"https:\/\/www.wetch.co.jp\/note\/%e6%88%91%e6%b5%81flutter%e5%ad%a6%e7%bf%92%e3%82%b9%e3%83%86%e3%83%83%e3%83%97%ef%bc%88%ef%bc%92%ef%bc%89riverpod%e3%81%a8gorouter\/\" target=\"_blank\" rel=\"noreferrer noopener\">\u6211\u6d41Flutter\u5b66\u7fd2\u30b9\u30c6\u30c3\u30d7\uff08\uff12\uff09Riverpod\u3068GoRouter<\/a><\/strong>\uff09\u3067\u3001\u300c\u72b6\u614b\u300d\u3068\u3057\u3066\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u7528\u3044\u308b\u5834\u5408\u3001\u5f53\u8a72\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306fimmutable\uff08\u4e0d\u5909\uff09\u3068\u3057\u3066\u6271\u3046\u3053\u3068\u304c\u5fc5\u8981\u3067\u3042\u308b\u70b9\u306b\u89e6\u308c\u307e\u3057\u305f\u304c\u3001\u3053\u306e\u3088\u3046\u306a\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u7c21\u5358\u306b\u5b9f\u88c5\u3059\u308b\u65b9\u6cd5\u3068\u3057\u3066Freezed\u306a\u308b\u30d1\u30c3\u30b1\u30fc\u30b8\u3092\u4f7f\u7528\u3059\u308b\u65b9\u6cd5\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4eca\u56de\u306f\u3053\u306eFreezed\u3092\u4f7f\u3063\u3066\u307f\u305f\u3044\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u307e\u305a\u306f\u3001\u6052\u4f8b\u306eBard\u3055\u3093\u306b\u3088\u308bFreezed\u306e\u89e3\u8aac\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Freezed\u306f\u3001Flutter\u3067\u4f7f\u7528\u3067\u304d\u308bDart\u306e\u30d1\u30c3\u30b1\u30fc\u30b8\u3067\u3059\u3002\u30c7\u30fc\u30bf\u30af\u30e9\u30b9\u3092\u751f\u6210\u3059\u308b\u305f\u3081\u306e\u30b3\u30fc\u30c9\u30b8\u30a7\u30cd\u30ec\u30fc\u30bf\u30fc\u3067\u3001\u30c7\u30fc\u30bf\u306e\u4e0d\u5909\u6027\u3084\u30b7\u30ea\u30a2\u30e9\u30a4\u30ba\u306a\u3069\u306e\u6a5f\u80fd\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002\n\nFreezed\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u30c7\u30fc\u30bf\u30af\u30e9\u30b9\u3092\u7c21\u5358\u306b\u751f\u6210\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u30c7\u30fc\u30bf\u30af\u30e9\u30b9\u306f\u3001\u4e0d\u5909\u306a\u30c7\u30fc\u30bf\u578b\u3067\u3059\u3002\u3064\u307e\u308a\u3001\u4e00\u5ea6\u4f5c\u6210\u3055\u308c\u305f\u30c7\u30fc\u30bf\u306f\u5909\u66f4\u3067\u304d\u307e\u305b\u3093\u3002\u3053\u308c\u306f\u3001\u30c7\u30fc\u30bf\u306e\u5b89\u5168\u6027\u3068\u5805\u7262\u6027\u3092\u5411\u4e0a\u3055\u305b\u307e\u3059\u3002\n\n\u307e\u305f\u3001Freezed\u306f\u30b7\u30ea\u30a2\u30e9\u30a4\u30ba\u6a5f\u80fd\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002\u30b7\u30ea\u30a2\u30e9\u30a4\u30ba\u3068\u306f\u3001\u30c7\u30fc\u30bf\u3092\u5225\u306e\u5f62\u5f0f\u306b\u5909\u63db\u3059\u308b\u3053\u3068\u3067\u3059\u3002Freezed\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u30c7\u30fc\u30bf\u30af\u30e9\u30b9\u3092JSON\u3084XML\u306a\u3069\u306e\u5f62\u5f0f\u306b\u30b7\u30ea\u30a2\u30e9\u30a4\u30ba\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u30c7\u30fc\u30bf\u306e\u4fdd\u5b58\u3084\u9001\u4fe1\u3092\u7c21\u5358\u306b\u884c\u3046\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\n\nFreezed\u306f\u3001Flutter\u3067\u30c7\u30fc\u30bf\u30af\u30e9\u30b9\u3092\u6271\u3046\u305f\u3081\u306e\u5f37\u529b\u306a\u30c4\u30fc\u30eb\u3067\u3059\u3002\u30c7\u30fc\u30bf\u306e\u5b89\u5168\u6027\u3001\u5805\u7262\u6027\u3001\u5229\u4fbf\u6027\u3092\u5411\u4e0a\u3055\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u5358\u306b\u4e0d\u5909\u6027\u3092\u5b9f\u73fe\u3059\u308b\u3060\u3051\u3067\u306a\u304f\u3001\u30b7\u30ea\u30a2\u30e9\u30a4\u30ba\u306b\u95a2\u9023\u3059\u308b\u6a5f\u80fd\u3082\u63d0\u4f9b\u3055\u308c\u308b\u3088\u3046\u3067\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u30d1\u30c3\u30b1\u30fc\u30b8\u306e\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Freezed\u306e\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u65b9\u6cd5\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code># flutter pub add freezed<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Freezed\u81ea\u4f53\u306e\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u306f\u4e0a\u8a18\u3067\u5b8c\u4e86\u3067\u3059\u304c\u3001\u5b9f\u306fFreezed\u306e\u5bfe\u8c61\u3068\u306a\u308b\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u5b9f\u88c5\u3067\u306f\u898f\u5b9a\u306e\u66f8\u5f0f\u3067\u5bfe\u8c61\u30af\u30e9\u30b9\u306b\u95a2\u3059\u308b\u5185\u5bb9\u3092\u8a18\u8ff0\u3057\u305f\u4e0a\u3067\u300cbuild_runner\u300d\u306a\u308b\u30c4\u30fc\u30eb\u3092\u4f7f\u7528\u3057\u3066\u95a2\u9023\u30b3\u30fc\u30c9\u3092\u81ea\u52d5\u751f\u6210\u3059\u308b\u3068\u3044\u3046\u624b\u7d9a\u304d\u304c\u5fc5\u8981\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u300cbuild_runner\u300d\u3092\u5408\u308f\u305b\u3066\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3057\u3066\u304a\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code># flutter pub add build_runner<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">\u51e6\u7406\u5185\u5bb9<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u30b5\u30f3\u30d7\u30eb\u30a2\u30d7\u30ea\u3068\u3057\u3066\u306f\u524d\u56de\u306e\u6295\u7a3f\u3092\u305d\u306e\u307e\u307e\u8e0f\u8972\u3057\u3001\u30ab\u30a6\u30f3\u30bf\u30fc\u306e\u72b6\u614b\u7ba1\u7406\u306b\u95a2\u3059\u308b\u90e8\u5206\u306e\u307f\u3092Freezed\u3092\u4f7f\u7528\u3059\u308b\u3088\u3046\u306b\u66f8\u304d\u63db\u3048\u3066\u307f\u305f\u3044\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u72b6\u614b\uff08\u30ab\u30a6\u30f3\u30bf\u30fc\uff09\u5b9a\u7fa9\uff08lib\/state\/counter_state.dart\uff09<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u307e\u305a\u3001\u5f53\u8a72\u30d5\u30a1\u30a4\u30eb\uff08lib\/state\/counter.dart\uff09\u304b\u3089\u72b6\u614b\uff08CounterState\uff09\u306e\u5b9a\u7fa9\u90e8\u5206\u306e\u307f\u3092\u629c\u304d\u51fa\u3057\u3066\u3001\u65b0\u898f\u306b\u30d5\u30a1\u30a4\u30eb\u300clib\/state\/counter_state.dart\u300d\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5185\u5bb9\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>import 'package:freezed_annotation\/freezed_annotation.dart';\n\npart 'counter_state.freezed.dart';\n\n@freezed\nclass CounterState with _$CounterState {\n  factory CounterState({\n    required int count,\n  }) = _CounterState;\n}<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Freezed\u306e\u5bfe\u8c61\u3068\u3059\u308b\u30af\u30e9\u30b9\u5b9a\u7fa9\u306b\u306f\u300c@freezed\u300d\u306a\u308b\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u3092\u8a18\u8ff0\u3057\u307e\u3059\u3002<br>\u3053\u308c\u306b\u3088\u308a\u300cbuild_runner\u300d\u306b\u5bfe\u3057\u3066\u8a72\u5f53\u90e8\u5206\u304cFreezed\u95a2\u9023\u306e\u30b3\u30fc\u30c9\u751f\u6210\u5bfe\u8c61\u3067\u3042\u308b\u3053\u3068\u3092\u793a\u3059\u8a33\u3067\u3059\u3002<br>\u307e\u305f\u3001\u4e0a\u8a18\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u3092\u4f7f\u7528\u3059\u308b\u305f\u3081\u306b\u300cfreezed_annotation.dart\u300d\u3092\u8aad\u307f\u8fbc\u3093\u3067\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u305d\u308c\u4ee5\u5916\u306e\u90e8\u5206\u306b\u3082\u8272\u3005\u3068\u7279\u5fb4\u304c\u3042\u308a\u307e\u3059\u304c\u3001\u3053\u306e\u8fba\u306f\u5168\u3066\u7d04\u675f\u4e8b\u3068\u3057\u3066\u899a\u3048\u308b\u3068\u8a00\u3046\u3053\u3068\u3067\u826f\u3044\u304b\u3068\u601d\u3044\u307e\u3059\u3002<br>\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u5316\u3059\u308b\u306e\u3067\u3042\u308c\u3070\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u611f\u3058\u3067\u3057\u3087\u3046\u304b\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>import 'package:freezed_annotation\/freezed_annotation.dart';\n\npart 'counter_state.freezed.dart';\n\n@freezed\nclass `Class\u540d` with _$`Class\u540d` {\n  factory `Class\u540d`({\n    \/\/ \u72b6\u614b\u306e\u5185\u5bb9\n  }) = _`Class\u540d`;\n}<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e0a\u8a18\u306e\u300c`Class\u540d`\u300d\u306e\u90e8\u5206\u3092\u9069\u5b9c\u66f8\u304d\u63db\u3048\u3001\u5177\u4f53\u7684\u306a\u72b6\u614b\u306e\u5185\u5bb9\uff08\u72b6\u614b\u3092\u69cb\u6210\u3059\u308b\u5404\u7a2e\u30c7\u30fc\u30bf\u306e\u578b\u3084\u540d\u79f0\u7b49\uff09\u3092factory\u306e\u5f15\u6570\u3068\u3057\u3066\u5b9a\u7fa9\u3059\u308c\u3070\u72b6\u614b\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3068\u3057\u3066\u306e\u5f62\u304c\u6574\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u300cbuild_runner\u300d\u3092\u5b9f\u884c\u3059\u308b\u3053\u3068\u3067\u300ccounter_state.dart\u300d\u306b\u5bfe\u3057\u3066\u300ccounter_state.freezed.dart\u300d\u306a\u308b\u30d5\u30a1\u30a4\u30eb\u304c\u81ea\u52d5\u751f\u6210\u3055\u308c\u307e\u3059\u3002<br>\u305d\u308c\u3092\u8aad\u307f\u8fbc\u3080\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u304c\u3001\u305d\u308c\u304c\u4ee5\u4e0b\u306e\u90e8\u5206\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>part 'counter_state.freezed.dart';<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u901a\u5e38\u3001\u4ed6\u306e\u30d5\u30a1\u30a4\u30eb\u3092\u8aad\u307f\u8fbc\u3080\u64cd\u4f5c\u306b\u304a\u3044\u3066\u306f\u300cimport\u300d\u3092\u4f7f\u7528\u3057\u307e\u3059\u304c\u3001\u300cimport\u300d\u3068\u300cpart\u300d\u3068\u306f\u4f55\u304c\u9055\u3046\u306e\u3067\u3057\u3087\u3046\uff1f<br>\u975e\u5e38\u306b\u5927\u96d1\u628a\u306b\u8a00\u3048\u3070\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8\u306a\u8981\u7d20\u306b\u95a2\u3059\u308b\u53c2\u7167\u53ef\u30fb\u4e0d\u53ef\u306e\u9055\u3044\u306e\u3088\u3046\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Flutter\uff08Dart\uff09\u3067\u306f\u8b58\u5225\u5b50\uff08\u5909\u6570\u3001\u95a2\u6570\u3001\u30af\u30e9\u30b9\u306a\u3069\u306e\u540d\u524d\uff09\u306e\u524d\u306b\u30a2\u30f3\u30c0\u30fc\u30b9\u30b3\u30a2\uff08_\uff09\u3092\u4ed8\u3051\u308b\u3053\u3068\u3067\u3001\u305d\u308c\u3092\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8\u306a\u3082\u306e\u3068\u3057\u3066\u6271\u3046\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<br>\u30af\u30e9\u30b9\u5185\u306e\u30d7\u30ed\u30d1\u30c6\u30a3\u3084\u30e1\u30bd\u30c3\u30c9\u3092\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8\u5316\u3057\u305f\u5834\u5408\u3001\u8a72\u5f53\u3059\u308b\u30d7\u30ed\u30d1\u30c6\u30a3\u3084\u30e1\u30bd\u30c3\u30c9\u306f\u5f53\u8a72\u30af\u30e9\u30b9\u5185\u3067\u3057\u304b\u30a2\u30af\u30bb\u30b9\u3067\u304d\u306a\u304f\u306a\u308a\u307e\u3059\u3002<br>\u3067\u306f\u3001\u30b0\u30ed\u30fc\u30d0\u30eb\u5909\u6570\u3092\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8\u5316\u3057\u305f\u5834\u5408\u306f\u3069\u3046\u306a\u308b\u3067\u3057\u3087\u3046\uff1f<br>\u3053\u306e\u5834\u5408\u3001\u57fa\u672c\u7684\u306b\u306f\u5f53\u8a72\u30b0\u30ed\u30fc\u30d0\u30eb\u5909\u6570\u306f\u5f53\u8a72\u30d5\u30a1\u30a4\u30eb\u5185\u304b\u3089\u3057\u304b\u30a2\u30af\u30bb\u30b9\u3067\u304d\u306a\u304f\u306a\u308a\u307e\u3059\u3002\u3064\u307e\u308a\u3001\u3042\u308b\u30d5\u30a1\u30a4\u30eb\uff08A\uff09\u5185\u306b\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8\u30b0\u30ed\u30fc\u30d0\u30eb\u5909\u6570\u304c\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u305f\u3068\u3057\u3066\u3082\u3001\u305d\u308c\u3092\u300cimport\u300d\u3057\u305f\u5225\u306e\u30d5\u30a1\u30a4\u30eb\uff08B\uff09\u304b\u3089\u306f\u5f53\u8a72\u30b0\u30ed\u30fc\u30d0\u30eb\u5909\u6570\u306f\u30a2\u30af\u30bb\u30b9\u3067\u304d\u307e\u305b\u3093\u3002<br>\u3057\u304b\u3057\u3001\u4e0a\u8a18\u306e\u3088\u3046\u306a\u30b1\u30fc\u30b9\u3067\u3082\u30d5\u30a1\u30a4\u30eb\u306e\u8aad\u307f\u8fbc\u307f\u65b9\u6cd5\u3092\u300cpart\u300d\u306b\u3059\u308b\u3053\u3068\u3067B\u304b\u3089A\u306e\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8\u30b0\u30ed\u30fc\u30d0\u30eb\u5909\u6570\u306b\u30a2\u30af\u30bb\u30b9\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002\u300cimport\u300d\u306f\u5358\u306b\u5225\u306e\u30d5\u30a1\u30a4\u30eb\u3092\u8aad\u307f\u8fbc\u3080\u3053\u3068\u3092\u610f\u5473\u3059\u308b\u306e\u306b\u5bfe\u3057\u3001\u300cpart\u300d\u306f\u3082\u3068\u3082\u3068\u4e00\u3064\u306e\u30d5\u30a1\u30a4\u30eb\u3067\u3042\u3063\u305f\u3082\u306e\u3092\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u5206\u5272\u3057\u3001\u30d3\u30eb\u30c9\u306b\u969b\u3057\u3066\u518d\u7d50\u5408\u3057\u3066\u3044\u308b\u3001\u3068\u8a00\u3063\u305f\u610f\u5473\u306e\u64cd\u4f5c\u3068\u8a00\u3048\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u306a\u304a\u3001part\u3067\u8aad\u307f\u8fbc\u307e\u308c\u308b\u5074\uff08\u4e0a\u8a18\u4f8b\u3067\u306fA\uff09\u3067\u306f\u81ea\u8eab\u304c\u3069\u306e\u30d5\u30a1\u30a4\u30eb\u306e\u4e00\u90e8\u3067\u3042\u308b\u304b\u3092\u793a\u3059\u66f8\u5f0f\u3068\u3057\u3066\u300cpart of\u300d\u306e\u5ba3\u8a00\u304c\u5fc5\u8981\u3067\u3059\u3002<br>\u5b9f\u969b\u306b\u3001\u300ccounter_state.dart\u300d\u306b\u5bfe\u5fdc\u3057\u3066\u751f\u6210\u3055\u308c\u308b\u300ccounter_state.freezed.dart\u300d\u5185\u306b\u306f\u4ee5\u4e0b\u306e\u8a18\u8ff0\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>part of 'counter_state.dart';<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u3067\u306f\u5b9f\u969b\u306b\u300cbuild_runner\u300d\u3092\u5b9f\u884c\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code># flutter pub run build_runner build<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u30d5\u30a1\u30a4\u30eb\u5185\u306e\u8a18\u8ff0\u306b\u554f\u984c\u304c\u306a\u3051\u308c\u3070\u300ccounter_state.freezed.dart\u300d\u304c\u751f\u6210\u3055\u308c\u308b\u304b\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u72b6\u614b\uff08\u30ab\u30a6\u30f3\u30bf\u30fc\uff09\u7ba1\u7406\uff08lib\/state\/counter.dart\uff09<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u5148\u306b\u5b9a\u7fa9\u3057\u305fCounterState\u3092\u4f7f\u7528\u3059\u308b\u3088\u3046\u306b\u72b6\u614b\u7ba1\u7406\uff08lib\/state\/counter.dart\uff09\u306e\u65b9\u3082\u66f8\u304d\u63db\u3048\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>import 'package:hooks_riverpod\/hooks_riverpod.dart';\n\nimport 'counter_state.dart';\n\nfinal counterProvider = StateNotifierProvider&lt;CounterNotifier, CounterState&gt;(\n    (ref) =&gt; CounterNotifier());\n\nclass CounterNotifier extends StateNotifier&lt;CounterState&gt; {\n  CounterNotifier() : super(CounterState(count: 0));\n\n  increment() {\n    state = CounterState(count: state.count + 1);\n  }\n}<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">CounterState\u306e\u5b9a\u7fa9\u304c\u5225\u30d5\u30a1\u30a4\u30eb\u5316\u3055\u308c\u305f\u3053\u3068\u3092\u9664\u3051\u3070\u66f8\u5f0f\u7684\u306b\u306f\u5927\u304d\u304f\u306f\u5909\u308f\u3063\u3066\u3044\u307e\u305b\u3093\u3002<br>\u305f\u3060\u3001\u524d\u56de\u306e\u4f8b\u3067\u306f\u72b6\u614b\u306e\u672c\u4f53\uff08count\uff09\u304cCounterState\u306e\u30d7\u30ed\u30d1\u30c6\u30a3\u3067\u3042\u3063\u305f\u305f\u3081\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u9593\u9055\u3063\u305f\u64cd\u4f5c\u304c\u3067\u304d\u3066\u3044\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>state.count += 1;<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Freezed\u3092\u4f7f\u7528\u3057\u305f\u30b1\u30fc\u30b9\u3067\u306fcount\u306f\u3042\u304f\u307e\u3067\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u306e\u5f15\u6570\u3067\u3042\u3063\u3066\u30d7\u30ed\u30d1\u30c6\u30a3\u3068\u3057\u3066\u5b58\u5728\u3059\u308b\u8a33\u3067\u306f\u306a\u3044\u305f\u3081\u3001\u4e0a\u8a18\u306e\u3088\u3046\u306a\u4e0d\u9069\u5207\u306a\u64cd\u4f5c\u3092\u884c\u304a\u3046\u3068\u3057\u3066\u3082\u30a8\u30e9\u30fc\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e00\u65b9\u3001\u300cstate.count\u300d\u3092\u53c2\u7167\u3059\u308b\u3053\u3068\u306f\u3067\u304d\u3066\u3044\u307e\u3059\u3002<br>CounterState\u306b\u300ccount\u300d\u306a\u308b\u30b2\u30c3\u30bf\u30fc\uff08\u30e1\u30bd\u30c3\u30c9\uff09\u304c\u81ea\u52d5\u3067\u751f\u6210\u3055\u308c\u3066\u304a\u308a\u3001\u3053\u308c\u3092\u547c\u3073\u51fa\u3057\u3066\u5b9f\u969b\u306e\u5024\u3092\u53d6\u5f97\u3057\u3066\u3044\u308b\u3088\u3046\u3067\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u307e\u3068\u3081<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u30cd\u30c3\u30c8\u3067Freezed\u306b\u95a2\u3057\u3066\u8abf\u3079\u308b\u3068\u300c\u30c7\u30fc\u30bf\u30af\u30e9\u30b9\uff08\u4f55\u3089\u304b\u306e\u30c7\u30fc\u30bf\u3092\u4fdd\u6301\u3059\u308b\u3053\u3068\u3092\u4e3b\u76ee\u7684\u3068\u3059\u308b\u30af\u30e9\u30b9\uff09\u304a\u3088\u3073\u540c\u30c7\u30fc\u30bf\u51e6\u7406\u3068\u3057\u3066\u5fc5\u8981\u3068\u306a\u308b\u6a19\u6e96\u7684\u306a\u51e6\u7406\u30e1\u30bd\u30c3\u30c9\uff08JSON\u30a8\u30f3\u30b3\u30fc\u30c9\u7b49\uff09\u3092\u7c21\u6613\u306b\u751f\u6210\u3067\u304d\u308b\u30d1\u30c3\u30b1\u30fc\u30b8\u300d\u3068\u3044\u3046\u3088\u3046\u306a\u6587\u8108\u3067\u8a9e\u3089\u308c\u3066\u3044\u308b\u3053\u3068\u3082\u591a\u304f\u3001\u5fc5\u305a\u3057\u3082\u4e0d\u5909\u6027\u306e\u307f\u304c\u7740\u76ee\u3055\u308c\u3066\u3044\u308b\u8a33\u3067\u3082\u306a\u3055\u305d\u3046\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3068\u306f\u8a00\u3046\u3082\u306e\u306e\u3001Freezed\u304cFlutter\u306b\u304a\u3051\u308bimmutable\uff08\u4e0d\u5909\uff09\u306a\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u751f\u6210\u65b9\u6cd5\u306e\u4ee3\u8868\u683c\u3067\u3042\u308b\u3053\u3068\u306f\u9593\u9055\u3044\u3042\u308a\u307e\u305b\u3093\u3002<br>Riverpod\u306eStateNotifierProvider\u306b\u304a\u3051\u308b\u72b6\u614b\u5b9f\u88c5\u65b9\u6cd5\u3068\u3057\u3066\u306f\u30b9\u30bf\u30f3\u30c0\u30fc\u30c9\u3068\u8003\u3048\u3066\u826f\u3044\u3067\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4eca\u56de\u306f\u72b6\u614b\u3068\u3057\u3066\u30ab\u30a6\u30f3\u30bf\u30fc\u3068\u3044\u3046\uff11\u3064\u306e\u6570\u5024\u3092\u6271\u3046\u3060\u3051\u306e\u4f8b\u3067\u3057\u305f\u304c\u3001\u5b9f\u969b\u306e\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067\u6271\u308f\u308c\u308b\u72b6\u614b\u306f\u3082\u3063\u3068\u8907\u96d1\u306a\u3082\u306e\u306b\u306a\u308b\u304b\u3068\u601d\u3044\u307e\u3059\u3002<br>\u4eca\u56de\u5b66\u7fd2\u3057\u305f\u57fa\u672c\u5f62\u304b\u3089\u306e\u5fdc\u7528\u7bc4\u56f2\u304b\u3068\u601d\u3044\u307e\u3059\u304c\u3001\u3082\u3057\u7279\u6b8a\u306a\u4e8b\u4f8b\u304c\u51fa\u3066\u304d\u305f\u3089\u6539\u3081\u3066\u8a18\u4e8b\u306b\u3057\u305f\u3044\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u524d\u56de\u306e\u6295\u7a3f\uff08\u6211\u6d41Flutter\u5b66\u7fd2\u30b9\u30c6\u30c3\u30d7\uff08\uff12\uff09Riverpod\u3068GoRouter\uff09\u3067\u3001\u300c\u72b6\u614b\u300d\u3068\u3057\u3066\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u7528\u3044\u308b\u5834\u5408\u3001\u5f53\u8a72\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306fimmutable\uff08\u4e0d\u5909\uff09\u3068\u3057\u3066\u6271\u3046\u3053\u3068\u304c\u5fc5\u8981\u3067\u3042\u308b\u70b9\u306b\u89e6\u308c\u307e\u3057\u305f\u304c\u3001\u3053\u306e [&hellip;]<\/p>\n","protected":false},"author":6,"featured_media":4804,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_wp_rev_ctl_limit":""},"categories":[214],"tags":[],"class_list":["post-4792","post","type-post","status-publish","format-standard","has-post-thumbnail","category-214"],"_links":{"self":[{"href":"https:\/\/www.wetch.co.jp\/note\/wp-json\/wp\/v2\/posts\/4792","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.wetch.co.jp\/note\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.wetch.co.jp\/note\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.wetch.co.jp\/note\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/www.wetch.co.jp\/note\/wp-json\/wp\/v2\/comments?post=4792"}],"version-history":[{"count":0,"href":"https:\/\/www.wetch.co.jp\/note\/wp-json\/wp\/v2\/posts\/4792\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.wetch.co.jp\/note\/wp-json\/wp\/v2\/media\/4804"}],"wp:attachment":[{"href":"https:\/\/www.wetch.co.jp\/note\/wp-json\/wp\/v2\/media?parent=4792"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.wetch.co.jp\/note\/wp-json\/wp\/v2\/categories?post=4792"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.wetch.co.jp\/note\/wp-json\/wp\/v2\/tags?post=4792"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}