Cache BMGlyphFont instead of recreating it everytime

BMGlyphFont+MMCache.h

#import <Foundation/Foundation.h>
#import <BMGlyphLabel/BMGlyphFont.h>

@interface BMGlyphFont (MMCache)

+ (BMGlyphFont *) cachedFontWithName:(NSString *)name;

@end

BMGlyphFont+MMCache.m

#import "BMGlyphFont+MMCache.h"


@implementation BMGlyphFont (MMCache)

+ (BMGlyphFont *)cachedFontWithName:(NSString *)name {
    id font = [[self fontCache] valueForKey:name];
    
    if (!font) {
        font = [BMGlyphFont fontWithName:name];
        [[self fontCache] setObject:font forKey:name];
    }
    
    return font;
}

+ (NSMutableDictionary *)fontCache {
    static NSMutableDictionary *fontCache;
    static dispatch_once_t pred;
    
    dispatch_once(&pred, ^{
        fontCache = [[NSMutableDictionary alloc] init];
    });
    
    return fontCache;
}

@end