Hello, why when i try do something like this it's doesn't compile reason: Incompatible types: String...

# announcements

[Alexjok]

Hello, why when i try do something like this it's doesn't compile reason: Incompatible types: String and Class<T>

class TypeClass<T>(
    private val returnResultAs: Class<T>
) {

    fun testCast(value: String): Result<Any, Exception> = when (returnResultAs) {
        is String -> Result.of { value }
        else -> Result.of { Gson().fromJson(value, returnResultAs) }
    }

}

But if i added

returnResultAs as Any

it works.

class TypeClass<T>(
    private val returnResultAs: Class<T>
) {

    fun testCast(value: String): Result<Any, Exception> = when (returnResultAs as Any) {
        is String -> Result.of { value }
        else -> Result.of { Gson().fromJson(value, returnResultAs) }
    }

}

[Tesserakt]

Your 'returnResultAs' var is a class reference, so in when clause you check if this reference is String. You should write 'String::class.java' instead of cast.

[Alexjok]

Thanks!