this post was submitted on 17 Nov 2024
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Programmer Humor

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

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