Is there a way to get a use of `MutableCollection:...

# stdlib

[Pere Casafont]

Is there a way to get a use of MutableCollection::plusAssign(Iterable) to compile without having assignment operators ambiguity error? Here an example that does not compile:

val list = listOf(1, 2, 3)
	var mutableList = mutableListOf(4, 5, 6)
	mutableList += list

[gildor]

Only if you replace var with val
If you need var there, than use addAll instead:
mutableList.addAll(list)

[Pere Casafont]

oh, yes I need var in my case, and now I understand what's up; thanks!

[Pere Casafont]

however, maybe it'd be nice if plusAssign had preference over plus + assign to avoid this odd situation

[gildor]

mutableList += list is acutally reassign mutableList, but (mutableList + list) returns List, so type is not compatible, so it’s not clear how you can solve it