Comment by orangy

Yep, I agree. Mostly because it was me digging into JMH :) Indeed we are measuring and optimising. This is still early work in progress, but we have some good results already:

    inline fun calc<T, R>(value: T, fn: (T)->R): R = fn(value)

    inline fun identity<T>(value: T): T = calc(value) { it }


    // This is optimised down to loading constant value 1 into variable x
    
val x = identity(1)

Besides having nice syntax for lots of everyday things Java developers are doing, we want to provide means for doing it effectively, clearly and maintainably.