@[email protected] to Programmer [email protected] • 4 months agoElvisfeddit.itimagemessage-square35fedilinkarrow-up1162arrow-down111
arrow-up1151arrow-down1imageElvisfeddit.it@[email protected] to Programmer [email protected] • 4 months agomessage-square35fedilink
minus-square@[email protected]linkfedilink14•4 months agoOn the left you have Elvis Presley, while on the right there’s the so-called Elvis operator
minus-squareThe CuuuuubelinkfedilinkEnglish16•4 months agobeen programming since 2008. the fuck is an elvis operator?
minus-squareJerkface (any/all)linkfedilinkEnglish8•4 months agoBeen programming since the 80s, ditto.
minus-squareThe CuuuuubelinkfedilinkEnglish3•4 months agogotacha. i’ve only ever heard them called ternaries. maybe i’m old. maybe i’m too young. definitely one of the two
minus-square@[email protected]linkfedilink8•4 months agoIt 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 ? $thing_that_could_be_truthy : 'fallback value'; The condition is also the value if it is truthy
minus-square@[email protected]linkfedilink3•edit-24 months agoIt’s a shorthand for writing this: variable = if (input != null) input else default This is equivalent: variable = input ?: default The answers confusing it with the ternary operator are wrong.
minus-square@[email protected]linkfedilinkEnglish3•4 months agowhy would you call it anything other than the ternary operator
minus-square@[email protected]linkfedilink3•edit-24 months agoBecause it’s not one. Ternary operator is A ? B : C, Elvis operator is A ?: B. The same two characters are involved, but both the syntax and effect is different.
minus-square@[email protected]linkfedilinkEnglish2•4 months agoThe second one isn’t valid syntax in any programming language I’m familiar with. What does it do?
minus-square@[email protected]linkfedilink4•4 months agoIt’s a shorthand for writing this: variable = if (input != null) input else default This is equivalent: variable = input ?: default
minus-square@[email protected]linkfedilink2•edit-24 months agoIt’s in Kotlin and some other languages. C# has it but there is actually A ?? B.
minus-square@[email protected]linkfedilink2•4 months agoRead further down on my other comment to understand, it’s just how the operator looks
On the left you have Elvis Presley, while on the right there’s the so-called Elvis operator
been programming since 2008. the fuck is an elvis operator?
Been programming since the 80s, ditto.
Ternary if?then:else
gotacha. i’ve only ever heard them called ternaries. maybe i’m old. maybe i’m too young. definitely one of the two
It specifically refers to this shorthand
?:that works like this:$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
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.
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 ?: defaultHuh. Neat feature.
It’s in Kotlin and some other languages. C# has it but there is actually
A ?? B.Read further down on my other comment to understand, it’s just how the operator looks