Programmer Humor

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submitted 4 days ago by Sleepzy@feddit.it to c/programmerhumor@lemmy.ml

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[–] dev_null@lemmy.ml 2 points 1 day ago* (last edited 1 day ago) (1 children)

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 1 day ago (1 children)

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

[–] dev_null@lemmy.ml 2 points 1 day ago (1 children)

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 1 day ago* (last edited 1 day ago) (1 children)

Huh. Neat feature.

[–] dev_null@lemmy.ml 2 points 20 hours ago* (last edited 20 hours ago)

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