Yes. I don't know what language that is, but I know what it means: take some key-value pairs, and reduce them with an accumulator, and make a new dictionary with the items from the accumulator, plus another entry mapping a list of the key to a value, starting with {}.
Alternatively:
mut acc = {}
for k, v in kvPairs {
acc[[k]] = v;
}
acc
Am I much wrong?
