Re: combining for_each and strtol()

From:

"Igor Tandetnik" <itandetnik@mvps.org>

Newsgroups:

microsoft.public.vc.stl

Date:

Fri, 1 Jun 2007 22:48:48 -0400

Message-ID:

<uoXOKCMpHHA.1148@TK2MSFTNGP06.phx.gbl>

"PaulH" <paul.heil@gmail.com> wrote in message
news:1180737178.098282.101830@q19g2000prn.googlegroups.com

I have a vector of strings that represent hexadecimal numbers where
I'd like to convert the string to an integer number and copy that
number to an element of a byte array using the strtol() function.

std::vector< std::string > addressTok; // ex: 00,0a,0b,1c,FF,55
BYTE address[6] = { 0 };
// address[x] = strtol( addressTok_iterator, NULL, 16 )
for_each( addressTok.begin(), addressTok.end(), ??? );

Is there a nice for_each() way of doing this?

FYI: long strtol( const char *nptr, char **endptr, int base );

struct StringToHex {
    BYTE operator() (const string& s) const {
        return static_cast<BYTE>(strtol(s.c_str(), 0, 16));
    }
};

transform(addressTok.begin(), addressTok.end(), address, StringToHex());

--
With best wishes,
    Igor Tandetnik

With sufficient thrust, pigs fly just fine. However, this is not
necessarily a good idea. It is hard to be sure where they are going to
land, and it could be dangerous sitting under them as they fly
overhead. -- RFC 1925