Objective-C date


snippet สำหรับเรื่อง date สำหรับ objective-c

+(NSDate *)today {
    return [NSDate date] ;
}
+(NSDate *)tomorrow {
    return [[NSDate date] dateByAddingTimeInterval:[SQDate secondInDay]];
}
+(NSDate *)yesterday {
    return [[NSDate date] dateByAddingTimeInterval:-1*[SQDate secondInDay]];
}

+(int)secondInDay {
    return 86400;
}
+(NSDate *)dateFromString:(NSString *)stringDate withFormat:(NSString *)format {
    NSDateFormatter *dateFormatter = [[[NSDateFormatter alloc] init] autorelease];
    [dateFormatter setDateFormat:format];
    return [dateFormatter dateFromString:stringDate];
    
    
}
+(NSString *)dateString:(NSDate *)date withFormat:(NSString *)format {
    NSDateFormatter *dateFormatter = [[[NSDateFormatter alloc] init] autorelease];
    [dateFormatter setDateFormat:format];
    return [dateFormatter stringFromDate:date];
}

+(NSString *)todayDateStringWithFormat:(NSString *)format {
    NSDateFormatter *dateFormatter = [[[NSDateFormatter alloc] init] autorelease];
    [dateFormatter setDateFormat:format];
    return [dateFormatter stringFromDate:[NSDate date]];
}
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