c++ - Iterator on vector error for operands "=" and "!=" - 


using namespace std;     vector<idrawable*>::const_iterator itdrawable;     for(itdrawable= scene.getdrawables().begin(); itdrawable!=scene.getdrawables().end();itdrawable++){         idrawable *drawable =(*itdrawable);         drawable->draw();     }

this code passing me error:

description resource path location type no match 'operator!=' (operand types 'std::vector<idrawable*>::const_iterator {aka __gnu_cxx::__normal_iterator<idrawable* const*, std::vector<idrawable*> >}' , 'std::vector<const idrawable*>::const_iterator {aka __gnu_cxx::__normal_iterator<const idrawable* const*, std::vector<const idrawable*> >}')

and

description resource path location type no match 'operator=' (operand types 'std::vector<idrawable*>::const_iterator {aka __gnu_cxx::__normal_iterator<idrawable* const*, std::vector<idrawable*> >}' , 'std::vector<const idrawable*>::const_iterator {aka __gnu_cxx::__normal_iterator<const idrawable* const*, std::vector<const idrawable*> >}')

i have looked these , should have const_iterator ? yet scene.getdrawables() looks like:

const std::vector<const idrawable*>& getdrawables() const {         return drawables;     }

so iterator should const_iterator right ? have no clue has change...

your 

const std::vector<const idrawable*>& getdrawables() const

returns const reference vector of const idrawable* pointers. 

vector<idrawable*>::const_iterator itdrawable;

declares const_iterator vector of different type (idrawable*, not const idrawable*). either change definition vector<const idrawable*>::const_iterator itdrawable; or use auto declare iterator in for loop,

for(auto itdrawable= scene.getdrawables().cbegin(); ...)

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