Is there a function akin to `uncurry` in kotlin? T...

# announcements

[mc]

Is there a function akin to uncurry in kotlin? That is, a function which takes a function of two arguments and returns a function which takes a single pair of arguments?

[gsala]

I don't think the stdlib would have something like this. Sounds like something #C5UPMM0A0 would have. Otherwise. I think you could easily make that function yourself

[arve]

fun <T, U, R> uncurry(fn: (t: T, u: U) -> R): (Pair<T, U>) -> R = { args: Pair<T, U> ->
        fn(args.first, args.second)
    }

Will this do?

[gsala]

@arve beat me to it. As an extension function:
fun <A, B, Z> ((A, B) -> Z).uncurry(): (Pair<A, B>) -> Z = { this(it.first, it.second) }

[kef]

fun <A, B, C> uncurry(f: (A, B) -> C ) = {it: Pair<A, B> -> f(it.first, it.second)}

val f1 = {a:Int, b:Int -> a+b}
f1(1, 2)

val f2 = uncurry(f1)
f2(Pair(1, 2))

[kef]

Damn 😉

[christophsturm]

im what language does uncurry do that?

[kef]

Haskell https://www.haskell.org/hoogle/?hoogle=uncurry