使用NSPredicate IOS的​​反數值

Question

NSArray *arrValues = [NSArray arrayWithObjects:@"ABCD",@"ABCE",@"CDE"]; 
NSPredicate *predicate = [NSPredicate predicateWithFormat:@"SELF CONTAINS[cd]%@",@"ABC"];  
NSArray *arrFiltered = [arrValues filteredArrayUsingPredicate:predicate]; 

我知道arrFiltered將包含結果ABCD和ABCE。

但是，我想要結果作爲CDE。

有沒有辦法找到指定的謂詞的逆。即，！（ABC）

Answer 1

嘗試

[NSPredicate predicateWithFormat:@"SELF !=[c] %@",@"ABC"]; 

的[c]，使平等的比較不區分大小寫。

選項-2

NSArray *arrValues = [NSArray arrayWithObjects:@"ABCD",@"ABCE",@"CDE",nil]; 
    NSPredicate *predicate = [NSPredicate predicateWithFormat:@"NOT (SELF CONTAINS %@)",@"ABC"]; 
    NSArray *arrFiltered = [arrValues filteredArrayUsingPredicate:predicate]; 

你輸出

Answer 2

嘗試使用NOT謂語

NSArray *arrValues = [NSArray arrayWithObjects:@"ABCD",@"ABCE",@"CDE"]; 
NSPredicate *predicate = [NSPredicate predicateWithFormat:@"NOT (SELF CONTAINS[cd] %@"),@"ABC"];  
NSArray *arrFiltered = [arrValues filteredArrayUsingPredicate:predicate];