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submitted 3 months ago by Sleepzy@feddit.it to c/programmerhumor@lemmy.ml

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

Because it's not one. Ternary operator is A ? B : C, Elvis operator is A ?: B. The same two characters are involved, but both the syntax and effect is different.

[-] AVincentInSpace@pawb.social 2 points 2 months ago

The second one isn't valid syntax in any programming language I'm familiar with. What does it do?

[-] dev_null@lemmy.ml 4 points 2 months ago

It's a shorthand for writing this:

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

This is equivalent:

variable = input ?: default

[-] AVincentInSpace@pawb.social 2 points 2 months ago* (last edited 2 months ago)

Huh. Neat feature.

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

It's in Kotlin and some other languages. C# has it but there it's actually A ?? B.

this post was submitted on 17 Nov 2024

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