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What's your favorite programming language and what about it do you like? (reddthat.com)

submitted 1 year ago by WackyTabbacy42069@reddthat.com to c/asklemmy@lemmy.ml

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[–] cocobean@bookwormstory.social 2 points 1 year ago (2 children)

I had to use Python for a bit at work and it was confusing

pipenv, venv, virtualenv, poetry...wtf is all this shit

a.b vs a['b'] vs a.get('b')...wtf is a KeyError

[–] richieadler@lemmy.myserv.one 5 points 1 year ago (2 children)

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?

[–] Hallainzil@lemmy.world 3 points 1 year ago (1 children)

What language do you use that accessing an object attribute is the same that accessing a dict key?

Javascript / Typescript.

[–] richieadler@lemmy.myserv.one 3 points 1 year ago

Well, yeah, I thought about later. Lua does the same.

The other questions are still valid, though.

[–] cocobean@bookwormstory.social 1 points 1 year ago (1 children)

Return undefined.

Typescript.

Why error? Just return undefined. Simple, no try/catch needed.

[–] richieadler@lemmy.myserv.one 1 points 1 year ago (1 children)

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.

[–] cocobean@bookwormstory.social 0 points 1 year ago

Is it? It's just an optional property. And Typescript will tell you that it's optional.