On 10/18/2013 08:05 PM, Tim Burgess wrote:

Takeing an std::string as input, I need to return the same string with any characters not in the ranges “az”, “AZ” and “09” being discarded. A

#include <boost/regex.hpp> #include <boost/algorithm/string/regex.hpp> // ... boost::regex non_alnum("[^[:alnum:]]"); boost::algorithm::erase_all_regex(input, non_alnum);

Gesendet: Freitag, 18. Oktober 2013 um 20:05 Uhr Von: "Tim Burgess" <tim@raisedbar.net> An: "'boost-users list'" <boost-users@lists.boost.org> Betreff: [Boost-users] String algorithm? Removing non-alphanumerics from a string

Hi,   Takeing an std::string as input, I need to return the same string with any characters not in the ranges “az”, “AZ” and “09” being discarded. A colleague told me that a could use something in the string algorithm library, but I’m obviously not spotting what I need. I tried regex replace, but failed, as I’m not understanding regular expressions yet.   Any and all suggestions would be gratefully received.   Best wishes.   Tim Burgess

std::remove_if with a predicate? Maybe std::isalnum would already do the job... kind regards, Jens Weller