Show how to iterate over the key-value pairs of an associative array, and print each pair out.

Also show how to iterate just over the keys, or the values, if there is a separate way to do that in your language.



See also

 Array
 Associative array: Creation, Iteration
 Collections
 Compound data type
 Doubly-linked list: Definition, Element definition, Element insertion, List Traversal, Element Removal
 Linked list
 Queue: Definition, Usage
 Set
 Singly-linked list: Element definition, Element insertion, List Traversal, Element Removal
 Stack


/* NetRexx */
options replace format comments java crossref symbols
 
surname = 'Unknown' -- default value
surname['Fred'] = 'Bloggs'
surname['Davy'] = 'Jones'
 
try = 'Fred'
say surname[try] surname['Bert']
 
-- extract the keys
loop fn over surname
  say fn.right(10) ':' surname[fn]
  end fn