collection library Collection

Non-aggregating utilities for working with collections.

This includes:

Bulk operations such as Lists.removeAll.
Functions for creating a collection from another such as Iterables.toUnmodifiableList.
Functions for working nullable elements such as NonNullableList.addIfNonNull.
Move operations that move elements between collections such as MovableList.move.

See sugar.collection.aggregate for aggregation related utilities.

Classes

ListMove<E>: A namespace for functions that move a List's elements to other collections.
SetMove<E>: A namespace for functions that move a Set's elements to other collections.

IterableIterable on Iterable<Iterable<E>>: Provides functions for working with nested iterables.
Iterables on Iterable<E>: Provides functions for transforming Iterables to other collections.
Lists on List<E>: Provides functions for working with Lists.
Maps on Map<K, V>: Provides functions for working with Maps.
MovableList on List<E>: Provides functions for moving elements in lists to other collections.
MovableSet on Set<E>: Provides functions for moving elements in sets to other collections.
NonNullableList on List<E>: Provides functions for working with Lists of null-nullable elements.
NonNullableMap on Map<K, V>: Provides functions for working with Maps with null-nullable entries.
NonNullableSet on Set<E>: Provides functions for working with Sets of null-nullable elements.
Sets on Set<E>: Provides functions for working with Sets.

disjoint(Iterable<Object?> a, Iterable<Object?> b) → bool: Returns true if a and b have no common elements.
reverse(List<Object?> list, [int start = 0, int? end]) → void: Reverses a list, or part of between start, inclusive and end, exclusive, in-place.
separate<E>(List<E> list, {required List<E> by}) → List<E>: Returns a copy of the list with its elements separated by those in by.