Re: Compilation error

From:
red floyd <no.spam@here.dude>
Newsgroups:
comp.lang.c++
Date:
Tue, 20 Mar 2007 01:20:49 GMT
Message-ID:
<RFGLh.9383$Um6.4564@newssvr12.news.prodigy.net>
Adrian Hawryluk wrote:

Adrian Hawryluk wrote:

I'm implementing an algorithm that will fill a container with the same
item. However, my object creation function isn't working correctly.
This should auto detect the types based on the parameters it was
passed. But I must be missing something as it will not compile.

template<typename dest_t, typename src_t>
inline fill<dest_t, src_t> make_fill(dest_t& dest, src_t& src) //< error
{
    return fill<dest_t, src_t>(src);
}

../arrayTest1.h:68: error: expected init-declarator before '<' token
../arrayTest1.h:68: error: expected `;' before '<' token

Thanks in advance.

Adrian


I don't get it. Under VC++ 6.0 it works (and that doesn't accept a
whole lot ;) lol jk) but g++ 3.4.4 (cygming special, gdc 0.12, using dmd
0.125), it chokes. Here is my test code that I transfered between the
two compilers. Nothing else in the file but this, so the only thing
that would go wrong is a link error because there is no main() function.

--------------------------------------------------------------------------
#include <vector>
#include <algorithm>
using namespace std;
template <typename dest_t, typename src_t>
class fill
{
    src_t const & value;
public:
    fill(src_t const & value)
    : value(value) {}

    void operator()(dest_t& dest)
    {
    }
};

template<typename dest_t, typename src_t>
inline fill<dest_t, src_t const> make_fill(dest_t& dest, src_t& src)
{
    return fill<dest_t, src_t const>(src);
}

int main2(int argc, char* argv[])
{

    vector<int> aa;
    aa.push_back(3);
    aa.push_back(5);
    int b = 3;
    for_each(aa.begin(), aa.end(), make_fill(*aa.begin(), b));

    return 0;
}
--------------------------------------------------------------------------


Don't know if it makes much of a diff, but change the second parameter
of make_fill to src_t const& src.

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