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


import system'collections;
import system'routines;
import extensions;
 
public program()
{
    // 1. Create
    var map := Dictionary.new();
    map["key"] := "foox";
    map["key"] := "foo";
    map["key2"]:= "foo2";
    map["key3"]:= "foo3";
    map["key4"]:= "foo4";
 
    // Enumerate
    map.forEach:
        (keyValue){ console.printLine(keyValue.Key," : ",keyValue.Value) }
}