NSDate+Addition

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date 转 string

///date 转 string+ (NSString *)stringFromDate:(NSDate *)date dateFormatter:(NSString *)formatter {    NSDateFormatter *dateFormat = [[NSDateFormatter alloc] init];    [dateFormat setDateFormat:formatter];    return [dateFormat stringFromDate:date];}/// date 转 string,  默认格式 @"yyyy年MM月dd日"+ (NSString *)stringFromDate:(NSDate *)date {    return [self stringFromDate:date dateFormatter:@"yyyy年MM月dd日"];}

string 转 date

///string 转 date+ (NSDate *)dateFromString:(NSString *)timeStr dateFormatter:(NSString *)formatter {    NSDateFormatter *dateFormat = [[NSDateFormatter alloc] init];    [dateFormat setDateFormat:formatter];    return [dateFormat dateFromString:timeStr];}///string 转 date,  默认格式 @"yyyy年MM月dd日"+ (NSDate *)dateFromString:(NSString *)timeStr {    return [self dateFromString:timeStr dateFormatter:@"yyyy年MM月dd日"];}
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