Hey guys, is there anyway to permute all elements in an array with all elements in the other? I'm tr...

# announcements

[LeoColman]

Hey guys, is there anyway to permute all elements in an array with all elements in the other?
I'm trying to simplify this:

val foo = firstArr.flatMap { a -> secondArr.map { b -> a to b } }

[spand]

Permute? Isnt what you are doing the cartesian product ?

[LeoColman]

Uh.... Probably hahaha

[LeoColman]

Maybe permute is the wrong word in English

[LeoColman]

I wanted all possible combinations of the two lists

[spand]

Not sure it gets much shorter. Google leads to this https://stackoverflow.com/questions/53749357/idiomatic-way-to-create-n-ary-cartesian-product-combinations-of-several-sets-of

[karelpeeters]

https://youtrack.jetbrains.net/issue/KT-25015

[karelpeeters]

I feel like this is definitely missing in the stdib.