Decoder k -> Decoder v -> Decoder (List ( k, v ))

[Herteby]

Would be nice to have a key-value decoder that allowed you to specify the key decoder, instead of it always being String 🙂

Useful when using wrapped types like type ID = ID String

[lydell]

Like dict2, but keyValuePairs2?

If so, wouldn’t (String -> Decoder k) -> Decoder v -> Decoder (List ( k, v )) make more sense? I’m thinking it is strange to ask for a decoder for the keys when we know that only Json.Decode.string would ever succeed (since object keys are always strings). See also: #22 (comment)

[Herteby]

@lydell True, String -> Decoder k would work, although it looks a bit odd I think.
How about String -> Maybe k or String -> Result String k ?