Hello, I tried write helper function for applicati...

# announcements

[vlastachu]

Hello, I tried write helper function for application 1 or more optional args on function:

fun <A, B> ((A)->B).optionalApply(optional: A?): B? {
    return optional?.let(this) // "let" good for 1 arg 
}
// test
fun testfun1(i: Int) = i + 1
testfun1.optionalApply(null) // "Function invocation expected" on "testfun1"

[cy]

vlastachu: should be ::testfun1.optionalApply(null)

[cy]

extension functions on functional types are supported

[cy]

you just need a function reference ::

[vlastachu]

Oh... thanks. used it only in context of methods