cerement comments on know the features of your language

know the features of your language (lemmy.world)

submitted 2 years ago by jroid8@lemmy.world to c/programmerhumor@lemmy.ml

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[–] cerement@slrpnk.net 12 points 2 years ago* (last edited 2 years ago) (5 children)

~~return a and a or b~~ → return a or b

correction from @murtaza64

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[–] DmMacniel@feddit.de 5 points 2 years ago (2 children)

Lua. My beloved.

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[–] lm7@lemmy.ml 2 points 2 years ago (1 child)

That's valid Python as well

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[–] kogasa@programming.dev 0 points 2 years ago

It's probably valid javascript that returns "-1" or the empty string depending on if "b" is undefined or null

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[–] murtaza64@programming.dev 3 points 2 years ago* (1 child)

You don't need the and right? Can't it just be return a or b

This doesn't work if a is falsy non-null actually

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[–] cerement@slrpnk.net 1 point 2 years ago

it’s just return a and b or c is the closest Lua has to a ternary operator, but yes, for the above you could shorten it to return a or b (“or returns the first argument if true, otherwise second argument is returned”)

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