JeOam

Method Description
+(id) stringWithCapacity:size                                   Creates a string initially containing size characters.

-(id) initWithCapacity:size                                     Initializeds a string with an initial capacity of size characters

-(void) setString:nsstring                                      Sets a string to nsstring.

-(void) appendString:nsstring                                   Appends nsstring to the end of the receiver.

-(void) deleteCharactersInRange:range                           Dletes characters in a specified range.

JeOam

Method                                                     Description
+(id) arrayWithObjects:obj1, obj2,... nil                  Creates a new array with obj1, obj2, ... as its elements.

-(BOOL) containsObject:obj                                 Determines whether the array contains obj(uses the isEuqal: method).

-(NSUInteger) count                                        Indicates the number of elements in the array

-(NSUInteger) indexOfObject:obj                            Specifies the index number of the first element that
                                                           contains obj(uses the isEqual: method).

JeOam

Method                                             Description
+(id) array                                        Creates an empty array

+(id) arrayWithCapacity:size                       Creates an array with a specified initial size

+(id) initWithCapacity:size                        Initializes a newly allocated array with a specified initial size

-(void) addObject:obj                              Adds obj to the end of the array

-(void) insertObject:obj atIndex:i                 Inserts obj into element i of the array

JeOam

Typedef data type         Description                  Wrapper Method        Unwrapper Method
CGPoint                   A point consisting of        valueWithPoint:       pointValue
                          an x and y value

CGSize                    A size consisting of         valueWithSize:        sizeValue
                          a width and height    

CGRect                    A rectangle consisting       valueWithRect:        rectValue
                          of an origin and size    

JeOam

Method                                          Description
+(id)dictionaryWithObjectsAndKeys:obj1,         Creates a dictionary with key-object pairs
key1, obj2, key2, ..., nil                      {key1, obj1}, {key2, obj2}, ...

-(id) initWithObjectsAndKeys:obj1, key1,        Initializes a newly allocated dictionary
obj2, key2, ..., nil                            with key-object pairs {key1, obj1}, {key2, obj2}, ...

-(NSArray *) allKeys                            Returns an array containing all the keys 
                                                from the dictionary

JeOam

Method                                 Description
+(id) dictionaryWithCapacity:size      Creates a mutable dictionary with an initial specified size

-(id) initWithCapacity:size            Initializes a newly allocated dictionary to be of an initial 
                                       specified size

-(void) removeAllObjects               Removes all entries from the dictionary

-(void) removeObjectForKey:key         Removes the entry for the specified key from the dictionary

JeOam

Method                                            Description
+(id) setWithObjects:obj1, obj2, ..., nil         Creates a new set from the list of objects

-(id) anyObject                                   Returns any object from the set

-(id) initWithObjects:obj1, obj2, ..., nil        Initializes a newly allocated set with a list oft objects.

-(BOOL) containsObject:obj                        Determines whether the set contains obj

-(BOOL) member:obj                                Determines whether the set contians obj

JeOam

Method                                            Description
+(id) setWithCapacity:size                        Creates a new set with an initial capacity to store

-(id) initWithCapacity:size                       Sets the initial capacity of a newly allocated
                                                  set to size members

-(void) addObject:obj                             Adds obj to the set

-(void) removeObject:obj                          Removes obj from the set

JeOam

Method                                   Description
+(NSIndexSet) indexSet                   Creates an empty index set

-(BOOL) containIndex:idx                 Returns YES if the index set contains the
                                         index idx, NO otherwise.

-(NSUinteger) count                      Returns the numbers of indexes in the indexed set.

-(NSUinteger) indexLessThanIndex:idx     Returns the closest index in the set less than idx
                                         or NSNotFund if none is less than idx(see also:

JeOam

Method                                       Description
-(NSData *) contentsAtPath:path              Reads data from a file

-(BOOL) createFileAtPath:path contents:      Writes data to a file
(NSData *)data attributes:attr

-(BOOL) removeItemAtPath:path error:err      Removes a file

-(BOOL) moveItemAtPath:from toPath:to        Renames or moves a file
error:err                                    (to cannot already exist)