Elvis

@Sleepzy@feddit.it · 5 months ago

Elvis

@dev_null@lemmy.ml · edit-2 5 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 · 5 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 · 5 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 · edit-2 5 months ago

Huh. Neat feature. That’s in C# I assume?

@dev_null@lemmy.ml · edit-2 5 months ago

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