gistfile1.m

static NSDateFormatter *monthYearFormatter;

#import "NSDate+DateUtils.h"

@implementation NSDate (DateUtils)
- (NSString *)stringMonthYear
{
    if (!monthYearFormatter)
    {
        monthYearFormatter = [[NSDateFormatter alloc] init];
        monthYearFormatter.dateFormat = @"MM yyyy";
    }
    return [monthYearFormatter stringFromDate:self];
}
@end