NSDictionary+NGAAdditions.m #1

//
//  NSArray+NGAAdditions.m
//  MBMenuExtra
//
//  Created by Michael Bishop on 1/23/10.
//  Copyright 2010 Perforce Software. All rights reserved.
//

#import "NSDictionary+NGAAdditions.h"

@implementation NSDictionary (NGAAdditions)
-(id)dictionaryByRemovingObjectsForKeys:(NSArray*)keys
{
    NSMutableDictionary * dictionary = [NSMutableDictionary dictionaryWithDictionary:self];
    [dictionary removeObjectsForKeys:keys];
    return [NSDictionary dictionaryWithDictionary:dictionary];
}

-(id)dictionaryByRemovingObjectForKey:(id)key
{
    return [self dictionaryByRemovingObjectsForKeys:[NSArray arrayWithObject:key]];
}

-(id)objectConvertingNullToNilForKey:(id)aKey
{
    id object = [self objectForKey:aKey];
    if ( [[NSNull null] isEqual:object] )
        return nil;
    return object;
}

@end


@implementation NSMutableDictionary (NGAAdditions)

-(void)setObjectConvertingNilToNull:(id)object forKey:(NSString*)key;
{
    id realObject = object? object : [NSNull null];
    
    [self setObject:realObject forKey:key];
}

-(void)setObjectIgnoringNil:(id)object forKey:(NSString*)key;
{
    if ( !object )
        return;
    
    [self setObject:object forKey:key];
}

-(void)setObjectRecognizingNil:(id)object forKey:(NSString*)key
{
    if ( !object )
        [self removeObjectForKey:key];
    else
        [self setObject:object forKey:key];
}

-(void)removeAllEntriesWithValuesEqualTo:(id)object
{
    [self removeObjectsForKeys:[self allKeysForObject:object]];
}


@end