collection 1.12.0

collection: ^1.12.0 copied to clipboard

Add CaseInsensitiveEquality.

Fix bug in equalsIgnoreAsciiCase.

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.

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.

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().

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.

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

Verify that the is valid for CanonicalMap.[].

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.