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


 
mapping(string:string) m = ([ "A":"a", "B":"b", "C":"c" ]);
foreach(m; string key; string value)
{
    write(key+value);
}
Result: BbAaCc
 
// only keys
foreach(m; string key;)
{
    write(key);
}
Result: BAC
 
// only values
foreach(m;; string value)
{
    write(value);
}
Result: bac
 
 