[swift-evolution] ternary operator ?: suggestion

[thorsten at portableinnovations.de]

Absolutely. Just the same rule: parts that were statements must be expressions. The else clause becomes mandatory.

-Thorsten 

> Am 06.12.2015 um 22:52 schrieb Alex Lew <alexl.mail+swift at gmail.com>:
> 
> I agree that it's simplest to just reuse switch keyword, and keep braces. +1.  
> 
> Would you allow the same thing with if?
> 
> let thisColor = if condition { .Red } else { .Blue }
> 
>> On Sun, Dec 6, 2015 at 4:44 PM, Rudolf Adamkovic <salutis at me.com> wrote:
>> > On 06 Dec 2015, at 22:35, thorsten--- via swift-evolution <swift-evolution at swift.org> wrote:
>> 
>> >
>> > I would prefer the expression to match the statement. The only difference would be that all parts that were statements now have to be expressions.
>> 
>> +1
>> 
>> >
>> > Therefore the switch-expression should simply look like follows:
>> >
>> > let thisColor = switch thatColor {
>> >         case .Red: .Green // must be an expression
>> >         default: .Yellow      // must be an expression
>> >     }
>> >
>> > No returns needed in the case clauses.
>> 
>> This actually looks great. One simple rule and zero new keywords.
>> 
>> Readable and simple to learn.
>> 
>> Fantastic!
>> 
>> > Formatting this as a one-liner would just require adding semicolons (though I wouldn't recommend this).
>> >
>> > -Thorsten
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> 
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