@bl4kers@lemmy.ml
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166d

I don’t understand this. Small brained users rise up

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

why would you call it anything other than the ternary operator

@dev_null@lemmy.ml
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4d

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.

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

It’s a shorthand for writing this:

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

This is equivalent:

variable = input ?: default
@AVincentInSpace@pawb.social
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3d

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

@dev_null@lemmy.ml
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3d

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

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

The Cuuuuube
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166d

been programming since 2008. the fuck is an elvis operator?

@dev_null@lemmy.ml
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It’s a shorthand for writing this:

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

This is equivalent:

variable = input ?: default

The answers confusing it with the ternary operator are wrong.

Ternary if?then:else

The Cuuuuube
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46d

gotacha. i’ve only ever heard them called ternaries. maybe i’m old. maybe i’m too young. definitely one of the two

It specifically refers to this shorthand ?: that works like this:

$value = $thing_that_could_be_truthy ?: 'fallback value';

# same as

$value = $thing_that_could_be_truthy ? $thing_that_could_be_truthy : 'fallback value';

The condition is also the value if it is truthy

@jerkface@lemmy.ca
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86d

Been programming since the 80s, ditto.

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