[swift-evolution] [Proposal] Enum string interoperability with Objective-C and Swift
Derrick Ho
wh1pch81n at gmail.com
Thu Jan 5 17:58:22 CST 2017
I updated the proposal
https://github.com/wh1pch81n/swift-evolution/blob/master/proposals/NNNN-Swift-enum-strings-ported-to-Objective-c.md
And I also posted the question on Reddit.
https://www.reddit.com/r/ObjectiveC/comments/5livbi/improve_ns_string_enum/?st=IXJK9UXL&sh=80e8c7d8
On Wed, Jan 4, 2017 at 2:51 PM Derrick Ho <wh1pch81n at gmail.com> wrote:
The underline can be omitted. To remain more consistent.
enum City: String {
case NewYork = "New York"
}
typedef NSString * City;
static City const CityNewYork = @"New York";
On Wed, Jan 4, 2017 at 2:22 PM Rod Brown <rodney.brown6 at icloud.com> wrote:
I'm not part of the core team, of course, but I like this change in
principle.
My one concern in this case would be choosing a naming convention for the
back port that makes sense both ways. The naming convention you propose (
EnumName_EnumCase) seems inconsistent with the current import of strings
from Obj-C to Swift. Could we find a way to unify them?
On 31 Dec 2016, at 4:15 am, Derrick Ho via swift-evolution <
swift-evolution at swift.org> wrote:
I'm trying to revive an old thread. I'd like to hear from the community.
Can we make a swift enum string interoperable with Objective-C?
Currently NS_STRING_ENUM ports from objective-c to swift but not the other
way around.
I feel that if you can go one direction you should be able to go back.
@objc
enum City: String {
case NewYork = "New York"
}
Make this available as a global string in objective -c ?
On Wed, Nov 23, 2016 at 5:55 AM Derrick Ho <wh1pch81n at gmail.com> wrote:
I think enum strings should gain better interoperability with swift.
Something like this:
enum City: String {
case NewYork = "New York"
}
This can be ported over to Objective-c like this:
typedef NSString * City;
static City const City_NewYork = @"New York";
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