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更新Demo
更新Demo
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69
UnityProject/Packages/UniTask/Runtime/Linq/Skip.cs
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69
UnityProject/Packages/UniTask/Runtime/Linq/Skip.cs
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using Cysharp.Threading.Tasks.Internal;
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using System;
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using System.Threading;
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namespace Cysharp.Threading.Tasks.Linq
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{
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public static partial class UniTaskAsyncEnumerable
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{
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public static IUniTaskAsyncEnumerable<TSource> Skip<TSource>(this IUniTaskAsyncEnumerable<TSource> source, Int32 count)
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{
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Error.ThrowArgumentNullException(source, nameof(source));
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return new Skip<TSource>(source, count);
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}
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}
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internal sealed class Skip<TSource> : IUniTaskAsyncEnumerable<TSource>
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{
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readonly IUniTaskAsyncEnumerable<TSource> source;
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readonly int count;
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public Skip(IUniTaskAsyncEnumerable<TSource> source, int count)
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{
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this.source = source;
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this.count = count;
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}
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public IUniTaskAsyncEnumerator<TSource> GetAsyncEnumerator(CancellationToken cancellationToken = default)
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{
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return new _Skip(source, count, cancellationToken);
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}
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sealed class _Skip : AsyncEnumeratorBase<TSource, TSource>
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{
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readonly int count;
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int index;
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public _Skip(IUniTaskAsyncEnumerable<TSource> source, int count, CancellationToken cancellationToken)
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: base(source, cancellationToken)
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{
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this.count = count;
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}
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protected override bool TryMoveNextCore(bool sourceHasCurrent, out bool result)
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{
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if (sourceHasCurrent)
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{
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if (count <= checked(index++))
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{
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Current = SourceCurrent;
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result = true;
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return true;
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}
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else
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{
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result = default;
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return false;
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}
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}
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else
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{
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result = false;
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return true;
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}
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}
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}
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}
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}
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