Is yield break equivalent to returning Enumerable<T>.Empty from a method returning IEnumerable<T>
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by Mike Two
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Published on 2010-03-16T18:52:49Z
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2010/03/16
19:01 UTC
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c#
These two methods appear to behave the same to me
public IEnumerable<string> GetNothing()
{
return Enumerable.Empty<string>();
}
public IEnumerable<string> GetLessThanNothing()
{
yield break;
}
I've profiled each in test scenarios and I don't see a meaningful difference in speed, but the yield break version is slightly faster.
Are there any reasons to use one over the other? Is one easier to read than the other? Is there a behavior difference that would matter to a caller?
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