AbstractCollection

This class provides a skeletal implementation of the {@code Collection} interface, to minimize the effort required to implement this interface.

To implement an unmodifiable collection, the programmer needs only to extend this class and provide implementations for the {@code iterator} and {@code size} methods. (The iterator returned by the {@code iterator} method must implement {@code hasNext} and {@code next}.)

To implement a modifiable collection, the programmer must additionally override this class's {@code add} method (which otherwise throws an {@code UnsupportedOperationException}), and the iterator returned by the {@code iterator} method must additionally implement its {@code remove} method.

The programmer should generally provide a void (no argument) and {@code Collection} constructor, as per the recommendation in the {@code Collection} interface specification.

The documentation for each non-abstract method in this class describes its implementation in detail. Each of these methods may be overridden if the collection being implemented admits a more efficient implementation.

This class is a member of the <a href="{@docRoot}/java/util/package-summary.html#CollectionsFramework"> Java Collections Framework</a>.

@author Josh Bloch @author Neal Gafter @see Collection

Constructors

this this(): Sole constructor. (For invocation by subclass constructors, typically implicit.)

Members

Functions

add bool add(E e): Undocumented in source. Be warned that the author may not have intended to support it.
addAll bool addAll(Collection!E c): {@inheritDoc}
addAll bool addAll(E[] c): Undocumented in source. Be warned that the author may not have intended to support it.
clear void clear(): Undocumented in source. Be warned that the author may not have intended to support it.
contains bool contains(E o): {@inheritDoc}
containsAll bool containsAll(Collection!E c): {@inheritDoc}
isEmpty bool isEmpty(): {@inheritDoc}
iterator InputRange!E iterator(): Returns an iterator over the elements contained in this collection.
opApply int opApply(int delegate(ref E) dg): Undocumented in source. Be warned that the author may not have intended to support it.
opEquals bool opEquals(IObject o): Undocumented in source. Be warned that the author may not have intended to support it.
opEquals bool opEquals(Object o): Undocumented in source. Be warned that the author may not have intended to support it.
remove bool remove(E e): Undocumented in source. Be warned that the author may not have intended to support it.
removeAll bool removeAll(Collection!E c): {@inheritDoc}
removeIf bool removeIf(Predicate!E filter): Undocumented in source. Be warned that the author may not have intended to support it.
retainAll bool retainAll(Collection!E c): {@inheritDoc}
size int size(): Undocumented in source.
toArray E[] toArray(): {@inheritDoc}
toHash size_t toHash(): Undocumented in source. Be warned that the author may not have intended to support it.
toString string toString(): Returns a string representation of this collection. The string representation consists of a list of the collection's elements in the order they are returned by its iterator, enclosed in square brackets ({@code "[]"}). Adjacent elements are separated by the characters {@code ", "} (comma and space). Elements are converted to strings as by {@link string#valueOf(Object)}.

AbstractCollection

Constructors

Members

Functions

Meta

Source