谓词正则

iOS-谓词、模糊查询

2016-08-24  本文已影响212人  亦晴工作室
// 准备数据
    NSMutableArray *arrayM = [NSMutableArray arrayWithCapacity:30];
    for (NSInteger i = 0; i < 30; i++) {
        NSString *name = [NSString stringWithFormat:@"1000phone%04d", arc4random_uniform(10000)];
        NSInteger age = arc4random_uniform(20) + 15;
        Person *p = [Person personWithName:name age:age];
        [arrayM addObject:p];
    }
   
    NSMutableArray *array = [NSMutableArray array];
    NSLog(@"初始结果 - %@", arrayM);
 
    //新建好的谓词语句 beginwith  between
    NSString *pstringt = [NSString stringWithFormat: @" name BEGINSWITH '1000phone' && name contains '0' && age BETWEEN {%d,%d} ",28,30];
   
 //       NSString *pstringt = @" name BEGINSWITH '1000phone' && age >=26  ";
   
   
   NSPredicate * predidate = [NSPredicate predicateWithFormat:pstringt];
    //进行谓词匹配
    NSArray *array2 =[arrayM filteredArrayUsingPredicate:predidate];
   
    NSLog(@"-----%@",array2);
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