Ojbect-C2 5、NSSet和NSMutableSet集合的使用

Adopted Protocols

NSCoding

• encodeWithCoder:

• initWithCoder:

NSCopying

• copyWithZone:

NSMutableCopying

• mutableCopyWithZone:

NSFastEnumeration

• countByEnumeratingWithState:objects:count:

Tasks

Creating a Set

• + set
• + setWithArray:
• + setWithObject:
• + setWithObjects:
• + setWithObjects:count:
• + setWithSet:
• – setByAddingObject:
• – setByAddingObjectsFromSet:
• – setByAddingObjectsFromArray:

Initializing a Set

• – initWithArray:
• – initWithObjects:
• – initWithObjects:count:
• – initWithSet:
• – initWithSet:copyItems:
• – init

Counting Entries

• – count

Accessing Set Members

• – allObjects
• – anyObject
• – containsObject:
• – filteredSetUsingPredicate:
• – makeObjectsPerformSelector:
• – makeObjectsPerformSelector:withObject:
• – member:
• – objectEnumerator
• – enumerateObjectsUsingBlock:
• – enumerateObjectsWithOptions:usingBlock:
• – objectsPassingTest:
• – objectsWithOptions:passingTest:

Comparing Sets

• – isSubsetOfSet:
• – intersectsSet:
• – isEqualToSet:
• – valueForKey:
• – setValue:forKey:

Creating a Sorted Array

• – sortedArrayUsingDescriptors:

Key-Value Observing

• – addObserver:forKeyPath:options:context:
• – removeObserver:forKeyPath:context:
• – removeObserver:forKeyPath:

Describing a Set

• – description
• – descriptionWithLocale:

NSMutableSet

Tasks

Creating a Mutable Set

• + setWithCapacity:
• – initWithCapacity:
• – init

Adding and Removing Entries

• – addObject:
• – filterUsingPredicate:
• – removeObject:
• – removeAllObjects
• – addObjectsFromArray:

Combining and Recombining Sets

• – unionSet:
• – minusSet:
• – intersectSet:
• – setSet: