Unexpected error when 2 provided args of same type are present

Code similar to this:

class MyClass @AssistedInject constructor(
    foobar: Foobar,
    @Assisted a: String,
    @Assisted b: String
) {
    @AssistedInject.Factory
    interface Factory {
        fun create(a: String, b: String): MyClass
    }
}

Results in:

Duplicate @Assisted parameters declared. Forget a qualifier annotation?

Since @Assisted args are supplied by the caller, it seems duplicates should be permitted. Am I missing something? Is this an annotation processing constraint?

I’ve solved the problem by adding qualifying annotations to both the MyClass constructor declaration and the factory function.

[JakeWharton]

I don’t think we gain anything. The intent was just to start with the semantics of a regular injector where order isn’t a thing.

For validation I’d be tempted to force the argument names to match only when you have more than one argument of the same type.

[BenTilbrook]

Sounds good to me. Thanks for the change.