how would I write `as?` as a function? `foo.tryAs(...

# getting-started

[y]

how would I write as? as a function? foo.tryAs(String) = foo as? String

[Sam]

inline fun <reified T> Any.tryAs(): T? = this as? T

The angle brackets specify a type parameter. You call it like this.

foo.tryAs<String>()

For more explanation read this section of the docs: https://kotlinlang.org/docs/inline-functions.html#reified-type-parameters

[y]

thanks a lot!

[Paul Griffith]

you don’t need your own extension, KClass already has a safecast function
so foo::class.safeCast(bar) (from an instance of foo)