/*NSPredicate 指定条件过滤数据*/
Person *person1 = [[Person alloc] initPerson:@"张三" age:12];
Person *person2 = [[Person alloc] initPerson:@"李四" age:21];
Person *person3 = [[Person alloc] initPerson:@"王五" age:33];
Person *person4 = [[Person alloc] initPerson:@"赵六" age:15];
NSArray *storage = [NSArray arrayWithObjects:person1,person2,person3,person4, nil];
//赛选满足谓词的条件返回是数组 满足年龄大于15
NSLog(@"%@",[storage filteredArrayUsingPredicate:[NSPredicate predicateWithFormat:@"age>=%d",15]]);
//满足姓名
NSLog(@"%@",[storage filteredArrayUsingPredicate:[NSPredicate predicateWithFormat:@"name=%@",@"张三"]]);
//或预算符
NSLog(@"%@",[storage filteredArrayUsingPredicate:[NSPredicate predicateWithFormat:@"name=%@ or age=%d",@"张三",15]]);
//in运算符
NSLog(@"%@",[storage filteredArrayUsingPredicate:[NSPredicate predicateWithFormat:@"self.name in {'张三','李四','赵六'}"]]);
//某个字符开头
NSLog(@"%@",[storage filteredArrayUsingPredicate:[NSPredicate predicateWithFormat:@"self.name beginswith '张'"]]);
//某个字符结尾
NSLog(@"%@",[storage filteredArrayUsingPredicate:[NSPredicate predicateWithFormat:@"self.name endswith '三'"]]);
//包含字符
NSLog(@"%@",[storage filteredArrayUsingPredicate:[NSPredicate predicateWithFormat:@"self.name contains '三'"]]);
OC-简单的介绍谓词和使用方法
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