Dart by Example: Map

main() {
  // adding keys
  var colors = new Map();
  colors['blue'] = false;
  colors['red'] = true;
  print(colors);
  // curly bracket literals can also be used:
  var shapes = {
    'square': false,
    'triangle': true
  };
  print(shapes);
  // keys and values can be iterated.
  // HashMap iterates in arbitrary order, while LinkedHashMap, and SplayTreeMap
  // iterate in the order they were inserted into the map.
  for (var key in shapes.keys) print(key);
  for (var value in shapes.values) print(value);
}
 

$ dart map.dart
{blue: false, red: true}
{square: false, triangle: true}
square
triangle
false
true

by @jryanio | source | license