Delegate Memory Usage & Optimization

[Maxime Chevalier-Boisvert]

I went ahead and wrote a little test program:

---------

import std.stdio;

alias int delegate() Dg;

Dg[] dgList;

Dg foo()
{
     auto f = delegate int()
     {
         return 0;
     };

     return f;
}

Dg bar()
{
     int n = 0;

     auto f = delegate int()
     {
         return n++;
     };

     return f;
}

void main()
{
     auto d0 = foo();
     writeln(d0.ptr);
     dgList ~= d0;

     auto d1 = bar();
     writeln(d1.ptr);
     dgList ~= d1;
}

---------

This outputs:

null
7F37305DDFF0

So it seems DMD optimizes this well, as I had hoped.