remove(x,k) -- removes the entry stored in the hash table x under the key k.
i1 : x = new MutableHashTable from {a => 1, b => 2} o1 = MutableHashTable{...} o1 : MutableHashTable
i2 : remove(x,a)
i3 : x o3 = MutableHashTable{...} o3 : MutableHashTable
Ways to use remove :