New library: open multi-methods

[Ali Çehreli via Digitalmars-d-announce]

On 07/18/2017 11:03 AM, jmh530 wrote:

 > the mixin(registerMethods); could then be adjusted so that void
 > print(virtual!Matrix m); is mixed in automatically because we now know
 > how to construct it.

That reminds me: Would the following be possible and better?

// From
void main()
{
   updateMethods();
   // ...
}

// To
mixin(constructMethods());
void main()
{
   // ...
}

constructMethods() could return the following string:

string constructMethods() {
   return q{
     shared static this() { updateMethods(); }
   };
}

If I'm not missing something, this is better because nothing needs to be 
added to main and the methods are available before main starts executing 
(module initialization order issues still apply.).

Ali