remove -- remove an entry from a mutable hash table

Synopsis

• Usage:

  remove(T, k)

• Inputs:
  • T, a hash table,
  • k, key
• Outputs:

Description

i1 : T = new MutableHashTable from {a => 1, b => 2, c => 3}; peek T

o2 = MutableHashTable{a => 1}
                      b => 2
                      c => 3

i3 : remove(T, a)

i4 : peek T

o4 = MutableHashTable{b => 2}
                      c => 3

i5 : T = new HashTable from {a => 1, b => 2, c => 3}

o5 = HashTable{a => 1}
               b => 2
               c => 3

o5 : HashTable

i6 : T = applyPairs(T, (k, v) -> if k =!= a then (k, v))

o6 = HashTable{b => 2}
               c => 3

o6 : HashTable

See also

• applyKeys -- apply a function to each key in a hash table
• applyPairs -- apply a function to each pair in a hash table
• applyValues -- apply a function to each value in a hash table
• delete -- delete some elements of a list
• drop -- drop some elements from a list or sequence.
• keys -- keys used in a hash table, dictionary, or database
• mutable -- whether something may be modified
• scanKeys -- apply a function to each key in a hash table or database
• hash tables