collection 1.14.3

Collections and utilities functions and classes related to collections.

1.14.1

• Make Equality implementations accept null as argument to hash.

1.14.0

• Add CombinedListView, a view of several lists concatenated together.
• Add CombinedIterableView, a view of several iterables concatenated together.
• Add CombinedMapView, a view of several maps concatenated together.

1.13.0

• Add EqualityBy

1.12.0

• Add CaseInsensitiveEquality.

• Fix bug in equalsIgnoreAsciiCase.

1.11.0

• Add EqualityMap and EqualitySet classes which use Equality objects for key and element equality, respectively.

1.10.1

• Set.difference now takes a Set<Object> as argument.

1.9.1

• Fix some documentation bugs.

1.9.0

• Add a top-level stronglyConnectedComponents() function that returns the strongly connected components in a directed graph.

1.8.0

• Add a top-level mapMap() function that works like Iterable.map() on a Map.

• Add a top-level mergeMaps() function that creates a new map with the combined contents of two existing maps.

• Add a top-level groupBy() function that converts an Iterable to a Map by grouping its elements using a function.

• Add top-level minBy() and maxBy() functions that return the minimum and maximum values in an Iterable, respectively, ordered by a derived value.

• Add a top-level transitiveClosure() function that returns the transitive closure of a directed graph.

1.7.0

• Add a const UnmodifiableSetView.empty() constructor.

1.6.0

• Add a UnionSet class that provides a view of the union of a set of sets.

• Add a UnionSetController class that provides a convenient way to manage the contents of a UnionSet.

• Fix another incorrectly-declared generic type.

1.5.1

• Fix an incorrectly-declared generic type.

1.5.0

• Add DelegatingIterable.typed(), DelegatingList.typed(), DelegatingSet.typed(), DelegatingMap.typed(), and DelegatingQueue.typed() static methods. These wrap untyped instances of these classes with the correct type parameter, and assert the types of values as they're accessed.

• Fix the types for binarySearch() and lowerBound() so they no longer require all arguments to be comparable.

• Add generic annotations to insertionSort() and mergeSort().

1.4.1

• Fix all strong mode warnings.

1.4.0

• Add a new PriorityQueue() constructor that forwards to new HeapPriorityQueue().

• Deprecate top-level libraries other than package:collection/collection.dart, which exports these libraries' interfaces.

1.3.0

• Add lowerBound to binary search for values that might not be present.

• Verify that the is valid for CanonicalMap.[].

1.2.0

• Add string comparators that ignore ASCII case and sort numbers numerically.

1.1.3

• Fix type inconsistencies with Map and Set.

1.1.2

• Export UnmodifiableMapView from the Dart core libraries.

1.1.1

• Bug-fix for signatures of isValidKey arguments of CanonicalizedMap.

1.1.0

• Add a QueueList class that implements both Queue and List.

0.9.4

• Add a CanonicalizedMap class that canonicalizes its keys to provide a custom equality relation.

0.9.3+1

• Fix all analyzer hints.

0.9.3

• Add a MapKeySet class that exposes an unmodifiable Set view of a Map's keys.

• Add a MapValueSet class that takes a function from values to keys and uses it to expose a Set view of a Map's values.