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


record r;
text s;
 
r_put(r, "A", 33);              # an integer value
r_put(r, "C", 2.5);             # a real value
r_put(r, "B", "associative");   # a string value
 
if (r_first(r, s)) {
    do {
        o_form("key ~, value ~ (~)\n", s, r[s], r_type(r, s));
    } while (rsk_greater(r, s, s));
}