Associative array/Creation: Difference between revisions

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    d2[]             /  the values
 1 2</lang>
+=={{header|Kotlin}}==
+{{trans|Java}}
+<lang scala>fun main(args: Array<String>) {
+    // map definition:
+    val map = mapOf("foo" to 5,
+                    "bar" to 10,
+                    "baz" to 15,
+                    "foo" to 6)
+    // retrieval:
+    println(map["foo"]) // => 6
+    println(map["invalid"]) // => null
+    // check keys:
+    println(map.contains("foo")) // => true
+    println(map.contains("invalid")) // => false
+    // iterate over keys:
+    for (k in map.keys) print("$k ")
+    println()
+    // iterate over values:
+    for (v in map.values) print("$v ")
+    println()
+    // iterate over key, value pairs:
+    for ((k, v) in map) println("$k => $v")
+}</lang>
 =={{header|Lang5}}==