NSDate 时间排序

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原创最新推荐文章于 2026-05-01 12:11:23 发布 601 阅读 AI 写同款· GEO 优化 ›

Python 爬虫实战：拼多多商品评论情感分析（含词云生成与差评预警）在电商行业竞争日益激烈的当下，商家对商品评论的分析需求愈发迫切。通过 Python 爬虫收集拼多多商品评论，并结合情感分析、词云可视化及差评预警技术，商家可精准洞察消费者反馈，优化商品与服务。本文将深度剖析从爬虫搭建到数据挖掘的关键环节，助力读者构建全流程电商评论分析系统。阅读详情

    NSMutableArray *dataArray = [NSMutableArray array];
    [fetchResult enumerateObjectsWithOptions:NSEnumerationReverse
                                  usingBlock:^(PHAsset *asset, NSUInteger idx, BOOL *stop) {
                                          [dataArray addObject:asset];                      
    }];
    if (dataArray.count > 0) {
        [dataArray enumerateObjectsUsingBlock:^(PHAsset* asset, NSUInteger idx, BOOL * _Nonnull stop) {
            NSDateFormatter *dateFormatter1 = [[NSDateFormatter alloc] init];
            [dateFormatter1 setDateFormat:@"yyyy/MM/dd"];
            NSString *destDateString = [dateFormatter1 stringFromDate:asset.creationDate];
            NSLog(@"%@",destDateString);
        }];

        [dataArray sortUsingComparator:^NSComparisonResult(PHAsset* asset1, PHAsset* asset2) {
          return [asset2.creationDate compare:asset1.creationDate];
        }];
        NSLog(@"compareEnd");
        [dataArray enumerateObjectsUsingBlock:^(PHAsset* asset, NSUInteger idx, BOOL * _Nonnull stop) {
            NSDateFormatter *dateFormatter1 = [[NSDateFormatter alloc] init];
            [dateFormatter1 setDateFormat:@"yyyy/MM/dd"];
            NSString *destDateString = [dateFormatter1 stringFromDate:asset.creationDate];
            NSLog(@"%@",destDateString);
        }];