I will never call this the “Elvis” operator. That’s as dumb as dog shit. It’s called the ternary operator.
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
been programming since 2008. the fuck is an elvis operator?
It’s a shorthand for writing this:
variable = if (input != null) input else defaultThis is equivalent:
variable = input ?: defaultThe answers confusing it with the ternary operator are wrong.
Ternary if?then:else
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
why would you call it anything other than the ternary operator
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 defaultThis is equivalent:
variable = input ?: default
I never heard it called the Elvis operator! Thanks!
It’s because if you turn it 90° to the right, it looks like Elvis’ hair with two eyes underneath!
Kotlin user spotted
php too
…but we don’t talk about php
