On Thursday, November 30, 2017 at 10:29:42 AM UTC, Rupert Smith wrote:
>
> I need to use Decode.lazy to do this. Is that memoized? Is that how
> decoders can create recursive values? Other than that, I don't see how they
> could.
>
Do you need to start with a recursive object in Javascript, then decode
into Elm using Decode.lazy, to produce a recursive value in Elm?
Approximately:
var rec = { field : rec };
myapp.ports.myport.send(rec);
type Rec =
Rec
{
field : Rec
}
port myport : (Rec -> msg) -> Sub msg
But of course, that isn't going to compile as ports won't decode tagged
union types, and you need a tagged union type to define a recursive type.
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