How would I transform this list of pairs: ```val p...

# announcements

[Ellen Spertus]

How would I transform this list of pairs:

val pairs = listOf(
    Pair("A", 1),
    Pair("A", 2),
    Pair("B", 3)
)

to this map:

mapOf(
  "A" to listOf(1, 2),
  "B" to listOf(3)
)

[ilya.gorbunov]

.groupBy(keySelector = { it.first }, valueTransform = { it.second })

[Ellen Spertus]

Thank you, @ilya.gorbunov!