The worst pointer chasing logic ever.cpp

   //Feast your eyes on the worst pointer chasing logic I have ever seen.
   static simulation_context* ctx_from_term(ErlNifEnv *env, ERL_NIF_TERM term) {
   
    /* This may seem crazy, but here's what's going on here. 
     * I'm trying to get a simulation_context*, which is a resource
     * my application is using. The function enif_get_resource accepts a void** ptr such that *ptr           
     * will point to my resource, so **ptr will be my simulation_context*
     */
    
    // We can't make a simulation_context*** as then it will try to write the pointer-pointer to that location
    // and it will segfault in our face, so first we need to alloc the pointer to the simulation_context* 
    // which enif_get_resource will write to:

    simulation_context** context_res_ptr_ptr;  
    // Then we make our call
    enif_get_resource(env, term, SIM_CONTEXT_TYPE, (void**) &context_res_ptr_ptr); //
    // context_res_ptr_ptr now points to our simulation_context*
    simulation_context *context = *(context_res_ptr_ptr);
    return context;
}