Question

Possible Duplicate:
Remove double quotes from NSString

I have a string with double double quotes “” that I need to replace with single double quotes “.

I’ve tried the following but I still end up with double double quotes

NSString *str = @"This is a \"\"99\"\" string";
[str stringByReplacingOccurrencesOfString: @"\"\"" withString: @"\""];

Initially the string is: This is a “”99″” string

After the stringByReplacingOccurrencesOfString: This is a “”99″” string.

What am I doing wrong?

Answer 1

It looks like you are expecting str to contain your modified string. Instead, you should be looking at the return value of the stringByReplacingOccurrencesOfString:withString: function:

NSString *str = @"This is a \"\"99\"\" string";
NSString *result =[str stringByReplacingOccurrencesOfString: @"\"\"" withString: @"\""];

NSLog(@"before: %@ after: %@", str, result);

NSString objects are immutable. If you want str to be mutable, look into NSMutableString: documentation link