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


fn main() {
    my_map := {
        "hello": 13,
        "world": 31,
        "!"    : 71 }
 
    // iterating over key-value pairs:
    for key, value in my_map {
        println("key = $key, value = $value")
    }
 
    // iterating over keys:
    for key,_ in my_map {
        println("key = $key")
    }
 
    // iterating over values:
    for _, value in my_map {
        println("value = $value")
    }
}