[swift-evolution] Anonymous Enums

[Harlan Haskins]

My worry is that this isn’t very different from

enum Temperature { case low, normal, high }

It’s 7 more characters and fully expressible now.

- Harlan

> On Feb 19, 2016, at 12:48 PM, Sean Heber via swift-evolution <swift-evolution at swift.org> wrote:
> 
> I too very much like the cleverness of this, but in my experience often what is initially a single-use enum turns into a multi-use enum in short order, so I don’t know if I’d be able to use this much at the end of the day.
> 
> Gotta say I like that syntax, though. Could be neat as a shorthand for defining regular enum cases, maybe! :P
> 
> enum Temperature = [low | normal | high]
> 
> l8r
> Sean
> 
> 
>> On Feb 19, 2016, at 2:42 PM, Erica Sadun via swift-evolution <swift-evolution at swift.org> wrote:
>> 
>> It's certainly clever and I particularly like the temperature example.
>> 
>> -- E
>> 
>> 
>>> On Feb 19, 2016, at 9:46 AM, Yong hee Lee via swift-evolution <swift-evolution at swift.org> wrote:
>>> 
>>> Hi, I have a proposal.
>>> 
>>> 
>>> enum Foo {
>>>  case foo,bar
>>> }
>>> 
>>> func test(a:Foo) {
>>>  // …
>>> }
>>> 
>>> test(.bar)
>>> 
>>> 
>>> If I use an enum only as a parameter of a function, the name of enum  is redundant. 
>>> 
>>> so I suggest a compact version like below.
>>> 
>>> 
>>> 
>>> func test(a:[foo|bar]) {
>>>  // ...
>>> }
>>> 
>>> test(.bar)
>>> 
>>> 
>>> 
>>> func adjustTemperature(temp:[low|normal|high]) {
>>>  // ...
>>> }
>>> 
>>> adjustTemperature(.high)
>>> 
>>> 
>>> 
>>> I think this is very useful.
>>> What do you think?
>>> 
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>> 
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