The JIT can optimize this. I know for sure if there's no captures in the lambda ... | Hacker News

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		ziml77 7 months ago \| parent \| context \| favorite \| on: “ZLinq”, a Zero-Allocation LINQ Library for .NET The JIT can optimize this. I know for sure if there's no captures in the lambda it won't allocate. It's likely also smart enough to recognize when a function parameter doesn't have its lifetime extended past the caller's, which is a case where it would also be possible to not allocate.

theolivenbaum 7 months ago [–]

To add on that, you can define your lambdas as static to make sure you're not capturing anything by mistake.

Something like dates.Where(static x => x.Date > DateTime.Now)

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