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Elvis (feddit.it)

submitted 2 years ago by Sleepzy@feddit.it to c/programmerhumor@lemmy.ml

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[-] Cube6392@beehaw.org 16 points 2 years ago

been programming since 2008. the fuck is an elvis operator?

[-] luciferofastora@lemmy.zip 4 points 2 years ago

Ternary if?then:else

[-] Cube6392@beehaw.org 4 points 2 years ago

gotacha. i've only ever heard them called ternaries. maybe i'm old. maybe i'm too young. definitely one of the two

[-] QuazarOmega@lemy.lol 8 points 2 years ago

It specifically refers to this shorthand ?: that works like this:

$value = $thing_that_could_be_truthy ?: 'fallback value';

# same as

$value = $thing_that_could_be_truthy ? $thing_that_could_be_truthy : 'fallback value';

The condition is also the value if it is truthy

[-] dev_null@lemmy.ml 3 points 2 years ago* (last edited 2 years ago)

It's a shorthand for writing this:

variable = if (input != null) input else default

This is equivalent:

variable = input ?: default

The answers confusing it with the ternary operator are wrong.

this post was submitted on 17 Nov 2024

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