Re: boost::variant and VC debugger

From:
Peter Nimmo <PeterNimmo@newsgroups.nospam>
Newsgroups:
microsoft.public.vc.language
Date:
Fri, 19 May 2006 07:38:36 -0700
Message-ID:
<Xns97C89F21D73D8PeterNnospamtnsofres@127.0.0.1>
"giancarp" <gian_pf@yahoo.co.uk> wrote in news:1148039569.215739.21820
@i40g2000cwc.googlegroups.com:

Basically what i did was something on the lines:

typedef boost::variant<long, std::string> GcVariant;

class GcString: public boost::static_visitor<string>{
public:
    string operator()(long i) const {
        stringstream istr;
        istr << i;
        return istr.str();
    }

    string operator()( const string& i) const {
        return i;
    }
};

const char* SV( const GcVariant& p_variant) {
    static string outputString;
    outputString = boost::apply_visitor( GcString(), p_variant );
    return outputString.c_str();
}

And if in the code i defined say:
GcVariant u;
u = "This is a string";
u = 234;
I can use the command window and type SV(u) and see the values "This is
a string" and "234".

Try making an expression addin - see http://msdn2.microsoft.com/en-
us/library/8fwk67y3.aspx

I have done this before to show my companies internal types in the watch
windows.

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