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[-] killeronthecorner@lemmy.world 27 points 10 months ago

rand will be called every time true is used, which could be hundreds of times for all we know

[-] frezik@midwest.social 25 points 10 months ago

If it's a 16-bit integer platform, it might hit every once in a while.

If it's a 32-bit integer platform, it'll hit very rarely.

If it's a 64-bit integer platform, someone would have to do the math with some reasonable assumptions, but I wouldn't be surprised if it would never hit before the universe becomes nothing but black holes.

[-] Morphit@feddit.uk 12 points 10 months ago

The point being made is that it also depends how often the 'true' value gets used in the code. Tests might only evaluate it a few times per run, or they could cause billions of evaluations per run. You can't know the probability of a test failure without knowing the occurrence rate of that expression.

[-] killeronthecorner@lemmy.world 4 points 10 months ago* (last edited 10 months ago)

Yes you're correct, this was the point I was making.

To elaborate: could be 100s of times in a codebase, even 1000s, being executed in tests on local machines and build servers 100s of times a day, etc. etc.

[-] themusicman@lemmy.world 2 points 10 months ago

But it would hit a different place every time... Most developers wouldn't even consider checking for this, and the chance of getting a repro in a debugger is slim to none

this post was submitted on 09 Feb 2024
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