How to properly compose NSRegularExpression with "or" condition in objective-c?

Question

Objective-C

A page can have one of two links

NSString *pattern1 = @"<a href=\"([^\"]+)\"><span class=\"arr\">&rarr;</span>";
NSString *pattern2 = @"<div class=\"quote more\"><a href=\"([^\"]+)\" class=\"button\">Хочу ещё!</a></div>";

Now I do this, I check the first, then the second, how to do this with one regular expression?
Tried like this, but the whole link is returned and not the href content as in the first case

(<a href=\"([^\"]+)\"><span class=\"arr\">&rarr;</span>)|(<div class=\"quote more\"><a href=\"([^\"]+)\" class=\"button\">Хочу ещё!</a></div>)

Answer 1

well, the indexes have shifted

(?:<a href=\"([^\"]+)\"><span class=\"arr\">&rarr;</span>)|(?:<div class=\"quote more\"><a href=\"([^\"]+)\" class=\"button\">Хочу ещё!</a></div>)