gistfile1.m

#import "DRBlocks.h"

@interface DRBlocks ()
@property (nonatomic) NSMutableDictionary *blocksHash;
@end

@implementation DRBlocks

- (instancetype)init
{
    self = [super init];
    if (self) {
        self.blocksHash = [NSMutableDictionary new];
    }
    return self;
}

- (instancetype)sharedBlocks {
    
    static DRBlocks *blockSingleton = nil;
    static dispatch_once_t predicate;
    
    dispatch_once(&predicate, ^{
        blockSingleton = [[DRBlocks alloc] init];
    });
    return blockSingleton;
}

- (void)addBlock:(NSObject *)block forKey:(NSString *)key {
    
    if ( block ) {
        [self.blocksHash setObject:[block copy] forKey:key];
    }
}

- (NSObject *)getBlockForKey:(NSString *)key {
    return [self.blocksHash objectForKey:key];
}


@end