Replace multiple characters in a string in Objective-C?

Question

In PHP I can do this:

$new = str_replace(array('/', ':', '.'), '', $new); 

...to replace all instances of the characters / : . with a blank string (to remove them)

Can I do this easily in Objective-C? Or do I have to roll my own?

Currently I am doing multiple calls to stringByReplacingOccurrencesOfString:

strNew = [strNew stringByReplacingOccurrencesOfString:@"/" withString:@""]; strNew = [strNew stringByReplacingOccurrencesOfString:@":" withString:@""]; strNew = [strNew stringByReplacingOccurrencesOfString:@"." withString:@""]; 

Thanks,
matt

Answer 1

A somewhat inefficient way of doing this:

NSString *s = @"foo/bar:baz.foo"; NSCharacterSet *doNotWant = [NSCharacterSet characterSetWithCharactersInString:@"/:."]; s = [[s componentsSeparatedByCharactersInSet: doNotWant] componentsJoinedByString: @""]; NSLog(@"%@", s); // => foobarbazfoo 

Look at NSScanner and -[NSString rangeOfCharacterFromSet: ...] if you want to do this a bit more efficiently.