{"url":"https://hack-it-iron.hatenablog.com/entry/2020/10/25/031042","type":"rich","description":"Using the Logging view \u30c7\u30d0\u30c3\u30b0\u306e\u969b\u306b\u4f7f\u3048\u305d\u3046 flutter.dev logging Dart\u306e\u30b3\u30de\u30f3\u30c9\u30e9\u30a4\u30f3\u30c4\u30fc\u30eb\u3067\u306elogging\u306b\u3053\u308c\u3092\u4f7f\u3063\u3066\u307f\u308b github.com Type test operators null\u306bas\u3092\u3084\u308b\u3068null\u304c\u8fd4\u308b\u306d\u3002\u4f8b\u5916\u306b\u306f\u306a\u3089\u306a\u3044\u306e\u304b\u3002 void main() { final a = null; print(a as String); // null (a as String).toString(); // \u3053\u308c\u306f\u4f8b\u5916\u306b\u306a\u308b\u304b\u3089 (a as String ?? '').toString(); \u3068\u304bnull\u3067\u3042\u308b\u53ef\u80fd\u6027\u3082\u610f\u8b58\u3057\u305f\u307b\u2026","title":"Dart\u30fbFlutter\u3092\u5b66\u3076\u65e5\u3005 \u305d\u306e10","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fhack-it-iron.hatenablog.com%2Fentry%2F2020%2F10%2F25%2F031042\" title=\"Dart\u30fbFlutter\u3092\u5b66\u3076\u65e5\u3005 \u305d\u306e10 - \u3084\u308b\u6c17 \u306a\u3044\u65e5\u8a18\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","blog_title":"\u3084\u308b\u6c17 \u306a\u3044\u65e5\u8a18","image_url":null,"provider_name":"Hatena Blog","version":"1.0","author_url":"https://blog.hatena.ne.jp/operando/","categories":["Dart","Flutter"],"author_name":"operando","height":"190","published":"2020-10-25 03:10:42","provider_url":"https://hatena.blog","blog_url":"https://hack-it-iron.hatenablog.com/","width":"100%"}