Proposal Details

It's fairly common to want to get a key or value from a map, but where you don't care which one. For example, if all the entries in the map have the same value for one property.

This leads to a fairly common pattern:

var someKey
for key := range myMap {
   someKey = key
   break
}

whilst not very onerous, it breaks the flow, and it's common enough that I think it may be worth adding to the exp maps package:

// Any returns a non-deterministically chosen key and value from the map m
func Any[M ~map[K]V, K comparable, V any](m M) (K, V)