<Sorted map with custom comparator> I want to crea...

# stackoverflow

[user]

Sorted map with custom comparator
I want to create a sorted map with a composite key. If it didn't need to be sorted, I would use
val myMap = mapOf(
Pair(1,"a") to "A",
Pair(2,"a") to "AA",
Pair(1,"b") to "B"
)

But it has to be a sorted map and this doesn't work:
val myMap = sortedMapOf(
Pair(1,"a") to "A",
Pair(2,"a") to "AA",
Pair(1,"b") to "B"
)

What's the most idiomatic way to create a sorted map with a custom comparator? I want it to compare by the first element of the pair and then by the second.