Here's the basic code I'm playing with:

struct MyCmd
{
	Variant func;
	// Has other members.
}

MyCmd[string] functions_;

void addCommand(T)(const string name, T func)
{
	MyCmd cmd;
	cmd.func = Variant(func);

	functions_[name] = cmd;
}

void process(string[] args) // args is only available at runtime.
{
	const string name = args[0]; // Name of the command

	if(name in functions_)
	{
		MyCmd cmd = functions_[name];
		cmd.func(/*Call with proper number of arguments converted to the proper type*/);
	}
}

I initially got idea from the D Cookbook Chapter Reflection: Creating a command-line function caller. But the code has to reside in the same module as the functions it will use.

So I arrived at this code but can't figure out how to call the actual stored function.

Thanks!

Store a wrapper instead of the actual function:
void wrapper(alias F)(string[] args)
{
  (convert args to F arguments) and invoke
}

cmd.func = &wrapper!someFunc;

string[] args;
cmd.func(args);

On Tuesday, 12 July 2016 at 08:34:03 UTC, Kagamin wrote:
> Store a wrapper instead of the actual function:
> void wrapper(alias F)(string[] args)
> {
>   (convert args to F arguments) and invoke
> }
>
> cmd.func = &wrapper!someFunc;
>
> string[] args;
> cmd.func(args);

Thanks that is clever. Never would have thought of that. Thanks a lot!