pkg/collection/README.md - Issue 113883002: Create associated packages for the dart:collection and dart:async libs.

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Issue 113883002: Create associated packages for the dart:collection and dart:async libs. (Closed) Base URL: https://dart.googlecode.com/svn/branches/bleeding_edge/dart

Patch Set: Split sequence_zip into pkg:async and pkg:collection. Created 7 years ago

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1 Helper libraries for working with collections.	1 Helper libraries for working with collections.

2	2

3 The `collection_helpers` package contains a number of separate libraries	3 The `collection` package contains a number of separate libraries

4 with utility functions and classes that makes working with collections easier.	4 with utility functions and classes that makes working with collections easier.

5	5

6 ## Using	6 ## Using

7	7

8 The `collection_helpers` library can be imported as separate libraries, or	8 The `collection` package can be imported as separate libraries, or

9 in totality:	9 in totality:

10	10

11 import 'package:collection_helpers/equality.dart';	11 import 'package:collection/equality.dart';

12 import 'package:collection_helpers/algorithms.dart';	12 import 'package:collection/algorithms.dart';

13 import 'package:collection_helpers/wrappers.dart';	13 import 'package:collection/wrappers.dart';

14	14

15 or	15 or

16	16

17 import 'package:collection_helpers/all.dart';	17 import 'package:collection/collection.dart';

18	18

19 ## Equality	19 ## Equality

20	20

21 The equality library gives a way to specify equality of elements and	21 The equality library gives a way to specify equality of elements and

22 collections.	22 collections.

23	23

24 Collections in Dart have no inherent equality. Two sets are not equal, even	24 Collections in Dart have no inherent equality. Two sets are not equal, even

25 if they contain exactly the same objects as elements.	25 if they contain exactly the same objects as elements.

26	26

27 The equality library provides a way to say define such an equality. In this	27 The equality library provides a way to say define such an equality. In this

(...skipping 18 matching lines...) Expand all Loading...
46 ## Wrappers	46 ## Wrappers

47	47

48 The wrappers library contains classes that "wrap" a collection.	48 The wrappers library contains classes that "wrap" a collection.

49	49

50 A wrapper class contains an object of the same type, and it forwards all	50 A wrapper class contains an object of the same type, and it forwards all

51 methods to the wrapped object.	51 methods to the wrapped object.

52	52

53 Wrapper classes can be used in various ways, for example to restrict the type	53 Wrapper classes can be used in various ways, for example to restrict the type

54 of an object to that of a supertype, or to change the behavior of selected	54 of an object to that of a supertype, or to change the behavior of selected

55 functions on an existing object.	55 functions on an existing object.

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