Hey folks, I want to do something like the following ```val components: List<Component> = Buil...

# getting-started

[Jonathan Hollingsworth]

Hey folks, I want to do something like the following

val components: List<Component> = BuilderClass(...some stuff...).into(Component)

I.e. you use the into function to take any Class and return a list of that class

Something like

Class BuilderClass(...) {

  fun into(klass: KClass<Any>): List<what_goes_here?> {
     ...

Anyone know if this is possible?

[Paul Griffith]

fun <T : Any> into(klass: KClass<T>): List<T> {?

[Paul Griffith]

the more Kotlin idiomatic way is inline fun <reified T : Any> into(): List<T> {, which would be called something like into<Component>()

[Jonathan Hollingsworth]

I need to introspect the instance inside into() in order to map a returned sql result set onto properties, so I’m guessing I’ll need the class as an argument in the func?

[Jonathan Hollingsworth]

This is pretty cool though, thanks

[Jonathan Hollingsworth]

But will mean I’ve got the rather unweildy syntax of

BuilderClass(...).into<Component>(Component::class)

[Tobias Suchalla]

If you go with the reified approach from above, you don't need the explicit class parameter. You can just use T::class in your function body since the type is no longer erased.

[Jonathan Hollingsworth]

Oh, wow. That looks excited.
I need to read about reified then.
Thank you