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On 1/5/23 22:23, Jason McKesson wrote:

So I can go ahead with a meta universal syntax because this is really what I am looking for.

I have no idea why you're talking about a "meta universal syntax" when
you know that nobody but yourself has any idea what you're talking
about. Make up whatever terms you like, but it's not going to make
your idea a good one.

Thanks for the long explanation but when I am referring to the meta universal syntax, I am referring to a feature I will be adding to the Fornux C++ Superset source-to-source compiler (if you wanna go into details). That feature will convert:

#include <list>
#include <iostream>

using namespace std;


struct A
{
    virtual void foo(list<int> & l)
    {
        cout << __PRETTY_FUNCTION__ << endl;
    }
};

int main()
{
    list<int> l = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};

    A a;

    a.foo(l);
    a.foo(list<int>{0, 1, 2, 3, 4, 5, 6, 7, 8, 9});
}

Into:

#include <list>
#include <iostream>

using namespace std;


struct A
{
    virtual void foo(list<int> && l)
    {
        cout << __PRETTY_FUNCTION__ << endl;
    }
};

int main()
{
    list<int> l = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};

    A a;

    a.foo(move(l));
    a.foo(move(list<int>{0, 1, 2, 3, 4, 5, 6, 7, 8, 9}));
}

Therefore mimicking non-const references to r-values. One complexity step taken away!

Thanks,

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Phil Bouchard
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T: (819) 328-4743
E: phil@fornux.com \| www.fornux.com
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