18 lines
455 B
Dart
18 lines
455 B
Dart
import 'dart:math';
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/// 生成与 web 前端一致的 UUID v4 字符串。
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///
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/// 模板：`xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx`
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String generateUuid() {
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final random = Random.secure();
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return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replaceAllMapped(
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RegExp('[xy]'),
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(match) {
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final r = random.nextInt(16);
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final c = match.group(0)!;
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final v = c == 'x' ? r : (r & 0x3) | 0x8;
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return v.toRadixString(16);
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},
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);
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}
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