Initial data commit

Task/Associative-array-Creation/Dart/associative-array-creation.dart

@@ -0,0 +1,34 @@
+main() {
+	var rosettaCode = { // Type is inferred to be Map<String, String>
+		'task': 'Associative Array Creation'
+	};
+
+	rosettaCode['language'] = 'Dart';
+
+	// The update function can be used to update a key using a callback
+	rosettaCode.update( 'is fun',  // Key to update
+		(value) => "i don't know", // New value to use if key is present
+		ifAbsent: () => 'yes!' // Value to use if key is absent
+	);
+	
+	assert( rosettaCode.toString() == '{task: Associative Array Creation, language: Dart, is fun: yes!}');
+	
+	// If we type the Map with dynamic keys and values, it is like a JavaScript object
+	Map<dynamic, dynamic> jsObject = {
+		'key': 'value',
+		1: 2,
+		1.5: [ 'more', 'stuff' ],
+		#doStuff: () => print('doing stuff!') // #doStuff is a symbol, only one instance of this exists in the program. Would be :doStuff in Ruby
+	};
+
+	print( jsObject['key'] );
+	print( jsObject[1] );
+	
+	for ( var value in jsObject[1.5] )
+		print('item: $value');
+
+	jsObject[ #doStuff ](); // Calling the function
+	
+	print('\nKey types:');
+	jsObject.keys.forEach( (key) => print( key.runtimeType ) );
+}