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(#42) Validate not-null handle
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@ -1,4 +1,5 @@
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using System.Threading;
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using System;
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using System.Threading;
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using System.Threading.Tasks;
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namespace X10D
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@ -15,7 +16,12 @@ namespace X10D
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/// <returns>A task which encapsulates <see cref="WaitHandle.WaitOne()" />.</returns>
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public static Task WaitOneAsync(this WaitHandle handle)
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{
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return new(() => handle.WaitOne());
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if (handle is null)
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{
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throw new ArgumentNullException(nameof(handle));
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}
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return new Task(() => handle.WaitOne());
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}
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}
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}
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