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Elvis (feddit.it)

submitted 5 days ago by Sleepzy@feddit.it to c/programmerhumor@lemmy.ml

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[-] bl4kers@lemmy.ml 16 points 5 days ago

I don't understand this. Small brained users rise up

[-] QuazarOmega@lemy.lol 14 points 5 days ago

On the left you have Elvis Presley, while on the right there's the so-called Elvis operator

[-] Cube6392@beehaw.org 16 points 5 days ago

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

[-] dev_null@lemmy.ml 2 points 2 days ago* (last edited 2 days 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.

[-] jerkface@lemmy.ca 8 points 4 days ago

Been programming since the 80s, ditto.

[-] luciferofastora@lemmy.zip 4 points 5 days ago

Ternary if?then:else

[-] Cube6392@beehaw.org 4 points 4 days 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 7 points 4 days 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

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this post was submitted on 17 Nov 2024

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