/
AnyAll.cs
69 lines (58 loc) · 1.91 KB
/
AnyAll.cs
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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
using System.Collections.Generic;
namespace System.Linq
{
public static partial class Enumerable
{
public static bool Any<TSource>(this IEnumerable<TSource> source)
{
return
TryGetNonEnumeratedCount(source, out int count) ? count != 0 :
WithEnumerator(source);
static bool WithEnumerator(IEnumerable<TSource> source)
{
using IEnumerator<TSource> e = source.GetEnumerator();
return e.MoveNext();
}
}
public static bool Any<TSource>(this IEnumerable<TSource> source, Func<TSource, bool> predicate)
{
if (source == null)
{
ThrowHelper.ThrowArgumentNullException(ExceptionArgument.source);
}
if (predicate == null)
{
ThrowHelper.ThrowArgumentNullException(ExceptionArgument.predicate);
}
foreach (TSource element in source)
{
if (predicate(element))
{
return true;
}
}
return false;
}
public static bool All<TSource>(this IEnumerable<TSource> source, Func<TSource, bool> predicate)
{
if (source == null)
{
ThrowHelper.ThrowArgumentNullException(ExceptionArgument.source);
}
if (predicate == null)
{
ThrowHelper.ThrowArgumentNullException(ExceptionArgument.predicate);
}
foreach (TSource element in source)
{
if (!predicate(element))
{
return false;
}
}
return true;
}
}
}