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know the features of your language (lemmy.world)

submitted 10 months ago by jroid8@lemmy.world to c/programmerhumor@lemmy.ml

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[-] maegul@lemmy.ml 12 points 10 months ago* (last edited 10 months ago)

Python, checking in ...

return (a or b)

Parentheses aren't necessary, I just prefer them for readability.

See python documentation on boolean operators for reference. Short story is a or b is an expression that evaluates to a if a is "truthy" else b. "Falsy" is empty strings/containers, 0 and None.

[-] juggling_collie@lemmy.ml 13 points 10 months ago

You need to be careful here though. You might not intend for 0 and None to mean the same thing.

[-] Bumblefumble@lemm.ee 3 points 10 months ago* (last edited 10 months ago)

So this won't do the intended thing if a is 0.

Edit: Sorry I meant to reply to the parent comment, realising now you already write the exact same thing.

[-] joyjoy@lemm.ee 3 points 10 months ago

Also if a is an empty collection or str, or false.

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this post was submitted on 08 Dec 2023

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