Instance Method

containsObject:

Returns a Boolean value that indicates whether a given object is present in the set.

Declaration

- (BOOL)containsObject:(ObjectType)anObject;

Parameters

anObject

An object to look for in the set.

Return Value

YES if anObject is present in the set, otherwise NO.

Discussion

Each element of the set is checked for equality with anObject until a match is found or the end of the set is reached. Objects are considered equal if isEqual: returns YES.

See Also

Accessing Set Members

allObjects

An array containing the set’s members, or an empty array if the set has no members.

- anyObject

Returns one of the objects in the set, or nil if the set contains no objects.

- filteredSetUsingPredicate:

Evaluates a given predicate against each object in the receiving set and returns a new set containing the objects for which the predicate returns true.

- makeObjectsPerformSelector:

Sends a message specified by a given selector to each object in the set.

- makeObjectsPerformSelector:withObject:

Sends a message specified by a given selector to each object in the set.

- member:

Determines whether a given object is present in the set, and returns that object if it is.

- objectEnumerator

Returns an enumerator object that lets you access each object in the set.

- enumerateObjectsUsingBlock:

Executes a given block using each object in the set.

- enumerateObjectsWithOptions:usingBlock:

Executes a given block using each object in the set, using the specified enumeration options.

- objectsPassingTest:

Returns a set of object that pass a test in a given block.

- objectsWithOptions:passingTest:

Returns a set of object that pass a test in a given block, using the specified enumeration options.