44 lines
1.3 KiB
C#
44 lines
1.3 KiB
C#
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#nullable enable
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using System;
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using System.Collections;
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using System.Collections.Generic;
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namespace BlueWest.WebApi.Tools
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{
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public static class IEnumerableExtensions
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{
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public static TSource? FirstOrNull<TSource>(this TSource[] source, Func<TSource, bool> predicate) where TSource : struct =>
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source.TryGetFirst(predicate);
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private static TSource? TryGetFirst<TSource>(this TSource[] source, Func<TSource, bool> predicate) where TSource : struct
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{
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for (var i = 0; i < source.Length; i++)
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{
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if (predicate(source[i]))
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{
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return source[i];
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}
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}
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return null;
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}
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public static TSource? FirstOrNull<TSource>(this IEnumerable<TSource> source, Func<TSource, bool> predicate) where TSource : struct =>
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source.TryGetFirst(predicate);
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private static TSource? TryGetFirst<TSource>(this IEnumerable<TSource> source, Func<TSource, bool> predicate) where TSource : struct
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{
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foreach (TSource obj in source)
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{
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if (predicate(obj))
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{
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return obj;
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}
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}
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return null;
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}
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}
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}
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