Hi guys. I want do do some basic stuff and I’m stu...

# getting-started

[kef]

Hi guys. I want do do some basic stuff and I’m stuck. What’s the fastest way to do convert:

val a = listOf(Pair("a", 1), Pair("a", 2), Pair("b", 1))

into:

[(a, 3), (b, 1)]

So, just group by key and sum values
Best I can do is:

a.groupBy ({ it.first}, {it.second} ).map{(key, value) -> key to value.sum()}

but there must be better way

[Ruckus]

Please stop cross posting

[kef]

Sorry, won’t do that again.

[Ruckus]

I don't mean to sound rude. We've had uses in the past spam every channel they can find and it gets annoying. In this case, pretty much everyone in #getting-started is in #general, so duplicating the post here will just spam the same people again, not increase visibility.

[Ruckus]

Basically, post something where you think it goes best an wait until you either get an answer or someone reccomends posting in another channel instead.

[kef]

I fully understand. I’ve just removed my post from general. Hopefully someone can help me here. Thanks!