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by Gh0stRAT 971 days ago
>foreach will not be replaced behind the scenes into multithreaded version since it changes behaviour.

It only (meaningfully) changes behavior if you're both iterating over an odered datastructure and the body of your loop has direct or indirect side-effects. (like printing, writing to a file, making network requests, etc)
2 comments
tester756 970 days ago
>nd the body of your loop has direct or indirect side-effects

So like... huge % of the real world code bases

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Gh0stRAT 970 days ago
Unfortunately yes. That being said, the hottest loops that would benefit the most from added parallelism tend to have fewer side effects already in my experience so things aren't quite so bleak.
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dragonwriter 971 days ago
> It only (meaningfully) changes behavior if you're both iterating over an odered datastructure and the body of your loop has direct or indirect side-effects.

Right, and not always even then, because that depends on what the consumer is concerned with as well. But the fact that it can means it's not a safe automatic substitution.

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