NSPredicate简单应用

1、筛选纯字符串数组的内容

NSArray *array = [[NSArray alloc]initWithObjects:@"beijing",@"shanghai",@"guangzou",@"wuhan", nil];

NSString *string = @"ang";

NSPredicate *pred = [NSPredicate predicateWithFormat:@"SELF CONTAINS %@",string];

NSLog(@"%@",[array filteredArrayUsingPredicate:pred]);

输出结果是：

(

    shanghai,

    guangzou

)

参考地址：http://blog.csdn.net/ztp800201/article/details/8116081