philnash@programming.dev to JavaScript@programming.devEnglish · 11 months agoStop nesting ternaries in JavaScriptwww.sonarsource.comexternal-linkmessage-square34fedilinkarrow-up143arrow-down111
arrow-up132arrow-down1external-linkStop nesting ternaries in JavaScriptwww.sonarsource.comphilnash@programming.dev to JavaScript@programming.devEnglish · 11 months agomessage-square34fedilink
minus-squareCameronDev@programming.devlinkfedilinkarrow-up5·11 months agohttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/switch - hasnt it had this forever? Or are you refering to something else?
minus-squarespartanatreyu@programming.devlinkfedilinkarrow-up10·11 months agoPretty sure they meant match as in pattern matching, not switch as in switch/case/break. You can see the proposal here: https://github.com/tc39/proposal-pattern-matching
minus-squareCameronDev@programming.devlinkfedilinkarrow-up3·11 months agoYour probably right, that looks quite desirable.
minus-squareJakenVeina@lemm.eelinkfedilinkarrow-up1·edit-211 months agoNah, I meant switch, as that’s what it’s called in C#-land. See above. That proposal for matching looks interesting, but not quite the same, no.
minus-squarespartanatreyu@programming.devlinkfedilinkarrow-up5·edit-211 months agoAre you sure? Your C# example: var output = input switch { null => "Null", 0 => "Zero", > 0 => "Positive", _ => "Negative" }; JS proposal for match: const output = match input { when null: "Null"; when 0: "Zero"; if input > 0: "Positive"; default: "Negative"; }
minus-squareJakenVeina@lemm.eelinkfedilinkarrow-up1·11 months agoAha, yeah, I see it now. Looking forward to it.
minus-squaresnowe@programming.devlinkfedilinkarrow-up2arrow-down1·11 months agothey also said switch expressions, which indicates they want the switch statement to be settable directly to a variable with whatever the return type of the switch is.
minus-squarespartanatreyu@programming.devlinkfedilinkarrow-up2·11 months agoMatch already returns the value which can be thrown into a variable.
minus-squareJakenVeina@lemm.eelinkfedilinkarrow-up2·edit-211 months agoYeah, a switch expression is different than a switch statement. I’m not actually sure how many languages actually have them, but in C# its… var output = input switch { null => "Null", 0 => "Zero", > 0 => "Positive", _ => "Negative" };
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/switch - hasnt it had this forever? Or are you refering to something else?
Pretty sure they meant
matchas in pattern matching, notswitchas in switch/case/break.You can see the proposal here: https://github.com/tc39/proposal-pattern-matching
Your probably right, that looks quite desirable.
Nah, I meant switch, as that’s what it’s called in C#-land. See above.
That proposal for matching looks interesting, but not quite the same, no.
Are you sure?
Your C# example:
var output = input switch { null => "Null", 0 => "Zero", > 0 => "Positive", _ => "Negative" };JS proposal for match:
const output = match input { when null: "Null"; when 0: "Zero"; if input > 0: "Positive"; default: "Negative"; }Aha, yeah, I see it now. Looking forward to it.
they also said switch
expressions, which indicates they want the switch statement to be settable directly to a variable with whatever the return type of the switch is.Match already returns the value which can be thrown into a variable.
Yeah, a switch expression is different than a switch statement. I’m not actually sure how many languages actually have them, but in C# its…
var output = input switch { null => "Null", 0 => "Zero", > 0 => "Positive", _ => "Negative" };