1.过滤数据的时候用到该类，例如
@H_301_8@
int i = 0,count = [arrayFilter count];
for(i = 0; i < count; i ++)
{
NSString *arrayItem = (NSString *)[arrayFilter objectAtIndex:i];
NSPredicate *filterPredicate = [[NSPredicate predicateWithFormat:@"SELF CONTAINS %@",arrayItem];
NSLog(@"Filtered array with filter %@,%@",arrayItem,[arrayContents filteredArrayUsingPredicate:filterPredicate]);
}
2.NOT (SELF in %@)
3.SELF == %@（简单比较）
4.SELF like %@
5.SELF like[cd] %@（
［c］表示忽略大小写，［d］表示忽略重音，可以在一起使用）
6.SELF matches %@(正则表达式)
