Sure looks bare up here with no comments.

OK, here’s one:

19 March 2009 - Added moveObject: toIndex: (Just to keep things alive!) – this had a bug in it, now fixed –JediKnil

4 June 2010 - moveObject: toIndex: (Fixed yet again!)

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Source for NSMutableArray +CocoaDevUsersAdditions.h :

#import <Foundation/Foundation.h>

@interface NSMutableArray (CocoaDevUsersAdditions)

• (void)push:(id)anObject;
• (id)pop;

• (void)insertObjectsFromArray:(NSArray *)anArray atIndex:(int)index;

• (void)replaceObject:(id)oldObject withObject:(id)newObject;

• (void)moveObject:(id)object toIndex:(NSUInteger)toIndex;

// Method for serializing an NSMutableArray object to a NSData in the form of a property list

• (NSData *)asDataReturningError:(NSString **)error; // Method for retrieving an NSMutableArray object from an property-list-formatted NSData object
• (NSMutableArray *)arrayWithData:(NSData *)data;

@end

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Source for NSMutableArray+CocoaDevUsersAdditions.m :

#import “NSMutableArray+CocoaDevUsersAdditions.h”

@implementation NSMutableArray (CocoaDevUsersAdditions)

• (void)push:(id)anObject { [self addObject:anObject]; }
• (id)pop { id res; if ([self count] == 0) { return nil; } res = [self lastObject] retain] autorelease]; [self removeLastObject]; return res; }

-(void)insertObjectsFromArray:(NSArray *)anArray atIndex:(int)index { int oldCount = [self count]; int cursor = index; int i;

[self addObjectsFromArray:anArray];

for (i = oldCount; i < [self count]; i++) { [self exchangeObjectAtIndex:i withObjectAtIndex: cursor]; cursor++; }

// The above doesn’t work for arbitrary insertions!?! I propose instead: // NSMutableArray* newOrdering = [NSMutableArray array]; // [newOrdering addObjectsFromArray:[self subarrayWithRange:NSMakeRange(0, anIndex); // [newOrdering addObjectsFromArray:anArray]; // [newOrdering addObjectsFromArray:[self subarrayWithRange:NSMakeRange(anIndex, [self count]-anIndex)]]; // [self setArray:newOrdering]; }

• (void)replaceObject:(id)oldObject withObject:(id)newObject { NSRange range = NSMakeRange(0, [self count]); // Efficiency int index = [self indexOfObject:oldObject];

  while (index != NSNotFound) { [self replaceObjectAtIndex:index withObject:newObject];

  // Efficiency range.length -= (index - range.location); range.location = index; index = [self indexOfObject:oldObject inRange:range]; } }

• (void)moveObject:(id)object toIndex:(NSUInteger)toIndex { NSUInteger currentIndex = [self indexOfObject:object]; [self insertObject:object atIndex:(toIndex>currentIndex)?toIndex+1:toIndex]; if (currentIndex!=NSNotFound) { [self removeObjectAtIndex:(currentIndex < toIndex ? currentIndex : currentIndex + 1)]; } }

• (NSData *)asDataReturningError:(NSString **)error { return [NSPropertyListSerialization dataFromPropertyList:self format:NSPropertyListXMLFormat_v1_0 errorDescription:error]; }

• (NSMutableArray *)arrayWithData:(NSData *)data { NSString *sData = [NSString allocWithZone:[self zone initWithData:data encoding:NSUTF8StringEncoding] autorelease] ; if (sData != nil) { NSArray *thePropertyList = [sData propertyList]; if (thePropertyList != nil) return thePropertyList mutableCopy] autorelease]; } return nil; }

@end

[[Category:CocoaDevUsersAdditions