Dynamically Loading a D DLL From a D Program

[Benjiro via Digitalmars-d-learn]

Silly question: In this post about static / dynamic loading, i 
noticed that it uses the dlopen/dlclose, while there is a 
core.runtime for handling the loading.

http://dlang.org/dll-linux.html#dso9
Dynamically Loading a D DLL From a D Program

 void* lh = dlopen("libdll.so", RTLD_LAZY);

 // Do Stuff

 dlclose(lh);

Is it not better to use:

import core.runtime : Runtime;

void* lib = Runtime.loadLibrary(fileName);

// Do Stuff

 Runtime.unloadLibrary(lib);

Is there also any information regarding d classes loading instead 
of functions?

It also seems that the core runtime is incomplete with basic 
loading but no handling of dlsym, so your still forced to use the 
basic c conversion casting.

int function() fn = cast(int function())dlsym(lib, libFunction);
fn();