want to have something like fun funGenerator some flags if f kotlinlang #functional

want to have something like fun funGenerator(some flags) { if flag = a return fn(param) { some operation on param } if flag = b return fn(param1 param2} {some different operations } }

gildor

07/12/2018, 7:03 AM

first of all define return type, as I mentioned in another thread, also, usually easier to use lambda instead of anonymous function

hah, funny, actually, for your case anonymous function is just fine, because do not clash with

when

block:

fun funGenerator(flag: Int): () -> Unit {
        return when (flag) {
            1 -> fun() { /* Do something for flag 1 */ }
            2 -> fun() { /* Do something for flag 1 */ }
            else -> error("Unknown flag")
        }
    }

Niels Renard

07/12/2018, 7:07 AM

That's exactly the kind of stuff I'm trying to move out of a different function. Thanks, I can work with this

Thought Unit was just for returning void

gildor

07/12/2018, 7:09 AM

Kotlin doesn’ have

void

, so yeah, use Unit or any type which this function should return

you also can use lambdas instead, anonymous function is very rare thing on my practice

pakoito

07/12/2018, 9:20 AM

are local functions expressions?

or statements

gildor

07/12/2018, 9:24 AM

Expressions. Local anonymous function is almost the same as lambda, the biggest difference is that you can use return inside of anonymous function

pakoito

07/12/2018, 9:25 AM

yeah they get compiled as lambdas, I didn’t know you could also assign them to a variable. We JS, guise.

Niels Renard

07/12/2018, 11:43 AM

ended up rewriting them as lambda's. lot cleaner

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