qaz@lemmy.world to Programmer Humor@programming.devEnglish · edit-221 days agoSlapping on a .expect is also error handling!lemmy.worldimagemessage-square28linkfedilinkarrow-up11arrow-down10file-text
arrow-up11arrow-down1imageSlapping on a .expect is also error handling!lemmy.worldqaz@lemmy.world to Programmer Humor@programming.devEnglish · edit-221 days agomessage-square28linkfedilinkfile-text
minus-squaremobotsar@sh.itjust.workslinkfedilinkEnglisharrow-up0·edit-221 days agoIf it’s guaranteed to not be None, why is it an Option?
minus-squaremarcos@lemmy.worldlinkfedilinkarrow-up0·edit-221 days agoOh, it can happen when you do calculations with compile-time constants… But the GP’s claim that it’s a “frequent” thing is suspect. (Crashing is also useful when you are writing and-user applications, but you’ll probably want .expect like in the meme.)
minus-squareemilgardis@lemmy.mllinkfedilinkEnglisharrow-up0·21 days agoHere’s a bad example but hopefully captures the why. https://play.rust-lang.org/?version=stable&mode=debug&edition=2024&gist=43d055381e7bb52569c339d4526818f4 We have a condition we know must be satisfied (the option will always be Some), but cant prove in code.
If it’s guaranteed to not be
None, why is it anOption?Oh, it can happen when you do calculations with compile-time constants…
But the GP’s claim that it’s a “frequent” thing is suspect.
(Crashing is also useful when you are writing and-user applications, but you’ll probably want .expect like in the meme.)
Here’s a bad example but hopefully captures the why. https://play.rust-lang.org/?version=stable&mode=debug&edition=2024&gist=43d055381e7bb52569c339d4526818f4
We have a condition we know must be satisfied (the option will always be Some), but cant prove in code.