[objc] 대소문자 구분없이 검색/치환

[mystring stringByReplacingOccurrencesOfString:@"searchString" withString:@"replaceString" options:NSCaseInsensitiveSearch range:NSMakeRange(0, [mystring length])];




http://stackoverflow.com/questions/6236581/how-to-replace-a-case-insensitive-string-in-objective-c-iphone