Question

I’m making a simple crime sim game.

Throughout it I keep doing the same thing over and over:

// vector<Drug*> drugSack;
for (unsigned int i = 0; i < this->drugSack.size(); i++)
            this->sell(drugSack[i]);

Just one example. I hate having all these for loops all over the place omg QQ, anyway to do something like:

drugSack->DoForAll((void*)myCallBack);

I’m not well versed in the STL.

Answer 1

Time to start knowing the stl algorithms:

#include <algorithm>

...

std::for_each( drugSack.begin(), drugSack.end(), 
  std::bind1st( std::mem_fun_ptr( &ThisClass::Sell ), this ) );

The idea is to create an object, called a “functor”, that can do a certain action for each of the elements in the range drugSack.begin(), drugSack.end().

This functor can be created using stl constructs like mem_fun_ptr, resulting in a functor taking a ThisClass* and a Drug* argument, and a wrapper around it that will substitute/bind the Class* for this.