[Dart] learning - related Methods of Iterable

I. Overview

• Set of values ​​or elements accessed sequentially, List also inherited a collection Iterable
• Set List and also Iterable, dart: There are a lot of the same library collection
• Iterable set may be modified portion
  • Add to List Set elements or objects will change all the elements it contains.
  • Map of Key to add a new element will change all of Map.keys.
  • After the set change, to create a new iterator will provide all the elements and may maintain the current order of the elements, may not

Second, create a way

• Create an empty iterable
  

  var ite = Iterable.empty();
  print(ite); // ()

• Create a Iterable, to dynamically generate a sequence of elements by
  

  var ite1 = Iterable.generate(5);
  print(ite1); // (0, 1, 2, 3, 4)

　　As for the introduction and use Iterable all the attributes and functions, refer to List usage, since List is inherited from Iterable, so Iterable some properties and methods in both List