Even then, that wouldn’t necessarily help in the general case. If you
decode `{"key" : 1}` as `[String : Codable]`, what concrete type would
`1` have? `Int`? `Double`? `Int8`? (Arguments can be made for any one of
these, but the key here is that it is inherently ambiguous and there
isn’t necessarily a good answer.)
On 19 Oct 2017, at 12:57, David Sweeris wrote:
On Oct 19, 2017, at 12:50 PM, David Baraff via swift-users
<swift-users@swift.org> wrote:
Yes; this is a case where anywhere in the code base I want to just
say
struct MyNewType : Codable {
// add codable datatypes
}
and don’t want/can’t always go to the centralized place to add it
in.
Is there some extension-like trick I can pull off that lets me spread
the implementation out over different files/libraries?
Ah, ok.
No, I don't think you'll be able to do that until/unless Swift gets
more macro/metaprogramming features. Maybe if protocols ever get to
conform to themselves? That's a common request, but implementing it is
apparently beyond tricky. I'm pretty sure somebody's working on it,
but "bigger fish" and all that...
- Dave Sweeris
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