thanks < Pavlo Liapota> i actually ended up doing this ``` private val converters = mapOf lt Class lt gt String gt Any gt Int class java to s gt s toInt Integer class java to s gt s toInt Double class java to s gt s toDouble Long class java to s gt s toLong Date class java to s gt Date s fun lt T gt getAs clazz Class lt T gt converter String gt T = null T val c = converter converters clazz throw IllegalArgumentException Can t auto cast to $clazz Add a converter as a second argument return try c invoke value catch e Exception as T ```

thanks < Pavlo Liapota> i actually ended up doing this ``` p kotlinlang #codereview

09/13/2018, 11:25 PM

thanks @Pavlo Liapota, i actually ended up doing this:

private val converters = mapOf<Class<*>, (String) -> Any>(
        Int::class.java to { s -> s.toInt() },
        Integer::class.java to { s -> s.toInt() },
        Double::class.java to { s -> s.toDouble() },
        Long::class.java to { s -> s.toLong() },
        Date::class.java to { s -> Date(s) }
)

fun <T> getAs(clazz: Class<T>, converter: ((String) -> T)? = null): T {
    val c = converter ?: converters[clazz] ?: throw IllegalArgumentException("Can't auto-cast to $clazz. Add a converter as a second argument.")
    return try {
        c.invoke(value)
    } catch (e: Exception) {
        ...
    } as T
}

09/14/2018, 3:11 AM

also can be reified

09/14/2018, 7:31 AM

i have a reified version calling this one

need to support java too