12 lines
289 B
Dart
12 lines
289 B
Dart
/// 可空 List 扩展
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extension ListNullableX on List? {
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/// 长度，null 视为 0
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int em() => this?.length ?? 0;
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/// 是否为空（null 也视为空）
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bool empty() => this == null || this!.isEmpty;
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/// 是否非空
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bool notEmpty() => this != null && this!.isNotEmpty;
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}
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