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by _urga 2700 days ago
Take a look at Zig's "defer" and "errdefer":

https://ziglang.org/documentation/master/#defer
2 comments
edflsafoiewq 2700 days ago
They are not comparable to RAII, see my comment above. Even the fact it has to bifurcate into defer and errdefer suggests that it lacks the generality to replace a totalizing resource management solution.
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notacoward 2700 days ago
No, they're not the same as your beloved RAII, but this isn't an object-oriented language so it doesn't have destructors. For the third time, what better solution do you propose for a non-OO language?
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gmueckl 2700 days ago
This seems equivalent to scope(exit)/scope(success)/scope(failure) in D. The drawback of this construct is that you need to repeat 2 or 3 lines of code each time you need safe cleanup or a commit/abort type of construct. This can become pretty repetitive pretty fast.
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Paul_Diraq 2700 days ago
I wish D had copied pythons with statement (without the scope escape) and not used the with statement for destructuring.

The nicest thing: you can throw in the exit method without the runtime falling over itself.

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gmueckl 2699 days ago
I totally missed that Python has this. This seems like the saner sibling of C#'s using/IDisposable construct.

You can do a kind of RAII in D when you use structs instead of classes because these are stack allocated and have a suitable lifetime.

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