Documentation for method unset assembled from the following pages:

Class: SetHash §

From SetHash

(SetHash) method unset §

Defined as:

method unset(SetHash:D: \to-unset --> Nil)

When given single key, unset removes it from the SetHash. When given a List, Array, Seq, or any other type that does the Iterator Role, unset removes each element of the Iterator from the SetHash (if it was present as a key).

Note: since version 2020.02.