{"categories":["Flutter","Dart"],"provider_url":"https://hatena.blog","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fmemory-lovers.blog%2Fentry%2F2023%2F10%2F04%2F072558\" title=\"Flutter\u306ecollection\u30d1\u30c3\u30b1\u30fc\u30b8\u304c\u4fbf\u5229\u3060\u3063\u305f - \u304f\u3089\u3052\u306b\u306a\u308a\u305f\u3044\u3002\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","type":"rich","version":"1.0","title":"Flutter\u306ecollection\u30d1\u30c3\u30b1\u30fc\u30b8\u304c\u4fbf\u5229\u3060\u3063\u305f","blog_url":"https://memory-lovers.blog/","description":"dart\u3067\u3053\u3093\u306a\u611f\u3058\u306e \u300c\u6761\u4ef6\u306b\u4e00\u81f4\u3057\u305f\u6700\u521d\u306e\u8981\u7d20\u3092\u53d6\u5f97\u3059\u308b\u300d \u307f\u305f\u3044\u306a\u3053\u3068\u3092\u3057\u305f\u304b\u3063\u305f\u3002 final item = items.firstWhere((v) => v.id == 1); \u898b\u3064\u304b\u3089\u306a\u3044\u3068\u304d\u306fnull\u304c\u8fd4\u3063\u3066\u304d\u3066\u307b\u3057\u3044\u3051\u3069\u3001 \u6761\u4ef6\u306b\u5408\u3046\u3082\u306e\u304c\u306a\u3044\u3068\u3001StateError\u304cthrow\u3055\u308c\u308b\u3002\u3002 orElse\u3092\u4f7f\u3046\u306e\u3082\u3044\u3044\u3051\u3069\u3001 final item = items.firstWhere( (v) => v.id == 1, orElse: () => null, ); \u3044\u308d\u3044\u308d\u63a2\u3057\u3066\u307f\u305f\u3089\u3001collection\u306e\u4fbf\u5229\u95a2\u6570\u306e\u30d1\u30c3\u30b1\u30fc\u30b8\u304c\u3042\u3063\u305f\u306e\u3067\u3001 \u8a66\u3057\u3066\u307f\u305f\u3068\u304d\u306e\u5099\u5fd8\u9332(*\u00b4\u03c9\uff40\u2026","blog_title":"\u304f\u3089\u3052\u306b\u306a\u308a\u305f\u3044\u3002","width":"100%","url":"https://memory-lovers.blog/entry/2023/10/04/072558","author_url":"https://blog.hatena.ne.jp/wannabe-jellyfish/","provider_name":"Hatena Blog","published":"2023-10-04 07:25:58","author_name":"wannabe-jellyfish","height":"190","image_url":null}