What's your favorite programming language and what about it do you like? WackyTabbacy42069 ( @WackyTabbacy42069@reddthat.com ) Asklemmy@lemmy.ml • 1 year ago message-square67fedilinkarrow-up182
arrow-up182message-squareWhat's your favorite programming language and what about it do you like? WackyTabbacy42069 ( @WackyTabbacy42069@reddthat.com ) Asklemmy@lemmy.ml • 1 year ago message-square67fedilink
minus-square richieadler ( @richieadler@lemmy.myserv.one ) linkfedilinkEnglish4•1 year agoWhat happens in other languages you use when you try to access a non-existing key for a hash/map/dict? What language do you use that accessing an object attribute is the same that accessing a dict key? What knowledge do you have (or not) that KeyError is a mistery to you?
minus-square cocobean ( @cocobean@bookwormstory.social ) linkfedilinkEnglish1•1 year agoReturn undefined. Typescript. Why error? Just return undefined. Simple, no try/catch needed.
minus-square richieadler ( @richieadler@lemmy.myserv.one ) linkfedilinkEnglish1•1 year agoBecause that’s prone to errors. And the Zen of Python includes “explicit is better than implicit” and “Errors should never pass silently”. Languages that do otherwise create bad habits.
minus-square cocobean ( @cocobean@bookwormstory.social ) linkfedilinkEnglish1•1 year agoIs it? It’s just an optional property. And Typescript will tell you that it’s optional.
What happens in other languages you use when you try to access a non-existing key for a hash/map/dict?
What language do you use that accessing an object attribute is the same that accessing a dict key?
What knowledge do you have (or not) that KeyError is a mistery to you?
Return undefined.
Typescript.
Why error? Just return undefined. Simple, no try/catch needed.
Because that’s prone to errors. And the Zen of Python includes “explicit is better than implicit” and “Errors should never pass silently”. Languages that do otherwise create bad habits.
Is it? It’s just an optional property. And Typescript will tell you that it’s optional.