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


include ffl/hct.fs
include ffl/hci.fs
 
\ Create hashtable and iterator in dictionary
10     hct-create htable
htable hci-create hiter
 
\ Insert entries
1 s" hello" htable hct-insert
2 s" world" htable hct-insert
3 s" !"     htable hct-insert
 
: iterate
  hiter hci-first
  BEGIN
  WHILE
    ." key = " hiter hci-key type ." , value = " . cr
    hiter hci-next
  REPEAT
;
 
iterate