29 lines
668 B
Dart
29 lines
668 B
Dart
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import 'dart:math';
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import 'package:flutter/material.dart';
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extension IterableHelper<T> on Iterable<T> {
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T? firstWhereOrNull(bool Function(T) test) => where(test).firstOrNull;
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}
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extension NullableIterableHelper<T> on Iterable<T?> {
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Iterable<T> whereNotNull() => where((element) => element != null).cast();
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}
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extension ListHelper<T> on List<T> {
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// List<T> shuffle([int? seed]) {
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// Random r = Random(seed);
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// var items = [...this];
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// for (var i = length - 1; i > 0; i--) {
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// var n = r.nextInt(i + 1);
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//
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// var temp = items[i];
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// items[i] = items[n];
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// items[n] = temp;
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// }
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//
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// return items;
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// }
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}
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