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[Dart] Intからその数字分のリストを生成する
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| extension IntExt on int { | |
| /// 3.indexMap((idx) => "$idx!") | |
| /// => [0!, 1!, 2!] | |
| Iterable<T> map<T>(T Function(int idx) f) sync* { | |
| int k = 0; | |
| while (k < this) { | |
| yield f(k++); | |
| } | |
| } | |
| } |
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公式のこれと同じか
List.generate(this, (idx) => "$idx!");