Using pure can't compile using Swift 3

[juvs]

We migrate our code from Swift 2 to 3, but we get errors in structs that use "pure" function o set default values when the resulting transformation return nil values...

Error Messages

Cannot convert value of type 'Decoded<(String?) -> Carril>' to expected argument type 'Decoded'

Sample JSON

{
  "id": 1,
  "nombre": "Test",
  "descripcion": "None"
}

Models

import Argo
import Curry
import Runes

public struct Carril {
    let id: Int
    let nombre: String
    let descripcion: String?
    let ubicacion: Ubicacion?
    let tarifa: Double?
    let tipo: String?
}

extension Carril: Argo.Decodable {
    public static func decode(_ j: JSON) -> Argo.Decoded<Carril> {
        let f = curry(Carril.init)
        return f
            <^> j <| "id"
            <*> j <| "nombre"
            <*> j <|? "descripcion"
            <*> j <|? "ubicacion"
            <*> j <|? "costoAuto" <|> pure(0)
            <*> j <|? "tipo"
    }
}

Argo Version

Argo 4.1.2

Dependency Manager

Cocoapods

[gfontenot]

Hey, sorry for the delay on this. Is this still an issue for you? My assumption would be precedence levels requiring some parens but I'm not sure why that would have changed with a new version of Swift.

[gfontenot]

I'm going to go ahead and close this due to inactivity but please feel free to reopen if this is still an issue.