Associative array/Iteration: Difference between revisions

=={{header|Wren}}==

Note that Wren makes no guarantee about iteration order which is not necessarily the same order in which the entries were added.

<lang ecmascript>// create a new map with four entries

var capitals = {

"France": "Paris",

"Germany": "Berlin",

"Russia": "Moscow",

"Spain": "Madrid"

}

// iterate through the map and print out the key/value pairs

for (c in capitals) System.print([c.key, c.value])

System.print()

// iterate though the map and print out just the keys

for (k in capitals.keys) System.print(k)

System.print()

// iterate though the map and print out just the values

for (v in capitals.values) System.print(v)</lang>

{{out}}

<pre>

[France, Paris]

[Russia, Moscow]

[Germany, Berlin]

[Spain, Madrid]

France

Russia

Germany

Spain

Paris

Moscow

Berlin

Madrid

</pre>