The article is a bit dense, but what it's announcing is effectively golang's `defer` (with extra braces) or a limited form of C++'s RAII (with much less boilerplate).

Both RAII and `defer` have proven to be highly useful in real-world code. This seems like a good addition to the C language that I hope makes it into the standard.

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Zambyte 3 hours ago | parent | next [-]

Probably closer to defer in Zig than in Go, I would imagine. Defer in Go executes when the function deferred within returns; defer in Zig executes when the scope deferred within exits.

	▲	rwmj 27 minutes ago \| parent [-]
		This is the crucial difference. Scope-based is much better. By the way, GCC and Clang have attribute((cleanup)) (which is the same, scope-based clean-up) and have done for over a decade, and this is widely used in open source projects now.

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L-4 an hour ago | parent | prev [-]

Both defer and RAII have proven to be useful, but RAII has also proven to be quite harmful in cases, in the limit introducing a lot of hidden control flow.

I think that defer is actually limited in ways that are good - I don't see it introducing surprising control flow in the same way.