如何修整特殊字符在目標C

Question

一個字符串我想要修整的特殊字符的發生在一個字符串

String has :  
prevs: Case Number                  
____________________ 

在此我想刪除--------從這個破折號這個字符串。我嘗試過這樣的：

NSCharacterSet *trim = [NSCharacterSet characterSetWithCharactersInString:@"-"]; 
    NSString *stringNew = [[previousString2 componentsSeparatedByCharactersInSet:trim] componentsJoinedByString:@""]; 

在此先感謝！

Answer 1

試試這個：

NSString *stringWithoutDash = [yourString stringByReplacingOccurrencesOfString:@"-" withString:@""]; 

Answer 2

NSString *trimedString = [myString stringByReplacingOccurrencesOfString:@"-" withString:@""]; 

Answer 3

使用正則表達式，模式[\\s_]{4,}搜索4個多個空格或下劃線。

NSString *trimmedString = [previousString2 stringByReplacingOccurrencesOfString:@"[\\s_]{4,}" withString:@"" options:NSRegularExpressionSearch range:NSMakeRange(0, previousString2.length)]; 

如果強調字符是真的飛奔reaplace在模式的字符。

Answer 4

您可以使用下面的代碼來刪除您的特殊字符串。

NSString *yourString = @"This is your string with speical character --------"; 
NSCharacterSet *removedCharacterSet = [NSCharacterSet characterSetWithCharactersInString:@"--------"]; 
NSString *finalString = [[yourString componentsSeparatedByCharactersInSet:removedCharacterSet] componentsJoinedByString:@""]; 
NSLog (@"Your final string : %@", finalString);