Re: Question about enums
Re: Question about enums
- Subject: Re: Question about enums
- From: Michael de Haan <email@hidden>
- Date: Fri, 17 Jul 2015 16:14:13 -0700
Could you elaborate on the persistence aspect…as this is what I will be needing.
Thanks
> On Jul 17, 2015, at 2:04 PM, iseecolors <email@hidden> wrote:
>
> As long as you only need one customer defined enum and it is not expected to persist, than this will work.
>
>> On Jul 17, 2015, at 1:57 PM, Stephen J. Butler <email@hidden> wrote:
>>
>> Or what about this? Tested this time...
>>
>> enum Foo {
>> case Bar
>> case Etc
>> case Etc_Etc
>> case Custom(String)
>>
>> func asString() -> String {
>> switch self {
>> case .Bar: return "Bar"
>> case .Etc: return "Etc"
>> case .Etc_Etc: return "Etc Etc"
>> case .Custom(let value): return value
>> }
>> }
>>
>> init(withString value: String) {
>> switch value {
>> case "Bar": self = .Bar
>> case "Etc": self = .Etc
>> case "Etc Etc": self = .Etc_Etc
>> default:
>> self = .Custom(value)
>> }
>>
>> }
>> }
>>
>> let a = Foo(withString: "Bar")
>> let b = Foo(withString: "Something Else")
>>
>> print("a = \(a.asString()); b = \(b.asString())")
>>
>> I guess more typing, and some room for error in the initializer, but it
>> does do away with the wrapper class.
>>
>> On Fri, Jul 17, 2015 at 3:39 PM, Quincey Morris <
>> email@hidden> wrote:
>>
>>> On Jul 17, 2015, at 13:33 , Stephen J. Butler <email@hidden>
>>> wrote:
>>>
>>>
>>> How about using a Custom option with an associated String value?
>>>
>>> enum Foo:String {
>>>
>>> case Bar = “Bar"
>>> case Etc = “Etc"
>>> case Etc_Etc = “Etc Etc"
>>> case Custom(String)
>>> }
>>>
>>>
>>> Unfortunately that won’t compile. One alternative is:
>>>
>>> enum Foo: String {
>>> case Bar = "Bar"
>>> case Etc = "Etc"
>>> case Etc_Etc = "Etc Etc"
>>> }
>>>
>>> enum FooPlus {
>>> case AFoo (Foo)
>>> case AString (String)
>>>
>>> var asString: String {
>>> switch self
>>> {
>>> case let .AFoo (foo): return foo.rawValue
>>> case let.AString (string): return string
>>> }
>>> }
>>> }
>>>
>>>
>>>
>>>
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