Removing new line characters from NSString

Question

I have a NSString like this:

Hello 
World
of
Twitter
Lets See this
>

I want to transform it to:

Hel

Answer 1

My case also contains \r, including \n, [NSCharacterSet newlineCharacterSet] does not work, instead, by using

htmlContent = [htmlContent stringByReplacingOccurrencesOfString:@"[\r\n]"
                                                     withString:@""
                                                        options:NSRegularExpressionSearch
                                                          range:NSMakeRange(0, htmlContent.length)];

solved my problem.

Btw, \\s will remove all white spaces, which is not expected.