Programmer Humor

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Elvis (feddit.it)

submitted 1 month ago by [email protected] to c/[email protected]

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[–] [email protected] 12 points 1 month ago (1 children)

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

[–] [email protected] 3 points 4 weeks ago (2 children)

why would you call it anything other than the ternary operator

[–] [email protected] 3 points 3 weeks ago* (last edited 3 weeks 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.

[–] [email protected] 2 points 3 weeks ago (1 children)

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

[–] [email protected] 4 points 3 weeks ago (1 children)

It's a shorthand for writing this:

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

This is equivalent:

variable = input ?: default

[–] [email protected] 2 points 3 weeks ago* (last edited 3 weeks ago) (1 children)

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

[–] [email protected] 2 points 3 weeks ago* (last edited 3 weeks ago)

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

[–] [email protected] 2 points 4 weeks ago

Read further down on my other comment to understand, it's just how the operator looks