WackyTabbacy42069@reddthat.com to Asklemmy@lemmy.ml · 1 year agoWhat's your favorite programming language and what about it do you like?message-squaremessage-square143fedilinkarrow-up1148arrow-down14
arrow-up1144arrow-down1message-squareWhat's your favorite programming language and what about it do you like?WackyTabbacy42069@reddthat.com to Asklemmy@lemmy.ml · 1 year agomessage-square143fedilink
minus-squarerichieadlerlinkfedilinkEnglisharrow-up5·1 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-squareHallainzil@lemmy.worldlinkfedilinkarrow-up3·1 year ago What language do you use that accessing an object attribute is the same that accessing a dict key? Javascript / Typescript.
minus-squarerichieadlerlinkfedilinkEnglisharrow-up3·1 year agoWell, yeah, I thought about later. Lua does the same. The other questions are still valid, though.
minus-squarecocobean@bookwormstory.sociallinkfedilinkEnglisharrow-up1·1 year agoReturn undefined. Typescript. Why error? Just return undefined. Simple, no try/catch needed.
minus-squarerichieadlerlinkfedilinkEnglisharrow-up1·1 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-squarecocobean@bookwormstory.sociallinkfedilinkEnglisharrow-up1arrow-down1·1 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?
Javascript / Typescript.
Well, yeah, I thought about later. Lua does the same.
The other questions are still valid, though.
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.