Dynamic alter-ego of D.

[Steven Schveighoffer]

On Wed, 26 Oct 2011 10:15:33 -0400, Gor Gyolchanyan  
<gor.f.gyolchanyan at gmail.com> wrote:

> 1. opDispatch is no good for overloading when the set of methods are
> defined at run-time.

For those cases, you must use the runtime interface that opDispatch will  
use directly.  D does not have a way to call a function by string at  
runtime.

call("functionName", arg1, arg2, arg3)

opDispatch simply provides a way to write cleaner code when you know the  
name of the function.

Even in dynamic languages, it's uncommon to call functions based on  
runtime strings.

> 2. opDIspatch doesn't cover operators (why?).

operators are not function symbols, and are already covered by templates.   
It should be as simple as:

opBinary(string s, T...)(T args) if(isValidOperator!s)
{
    call(s, args);
}

-Steve