Finding an element in a vector of pointers

I am attempting to execute this snippet of code:

Code:

bool Region::ContainsAgent ( Agent *myAgent )
{
	if ( find(RegionalAgents.begin(), RegionalAgents.end(), myAgent) != RegionalAgents.end() ) 
             return true;
	else return false;
}

RegionalAgents is an STL vector of type Agent*. I am passing an Agent* into the function, so essentially I just want to see if that pointer is contained in the RegionalAgents vector. Not too difficult....pretty simple concept. Unfortunately gcc is not liking it.

When I compile it on Linux with gcc 4.3, it gives me an error saying:

Code:

[dpru@cycling]$ make agents

g++ -Wall -o agents_simulation src/agent.cpp src/belief.cpp src/group.cpp 
src/region.cpp src/simulation.cpp src/world.cpp src/main.cpp

src/region.cpp: In member function âbool Region::ContainsAgent(Agent*)â:
    src/region.cpp:31: error: no matching function for call to  
      find(__gnu_cxx::__normal_iterator<Agent**, std::vector<Agent*, 
      std::allocator<Agent*> > >, __gnu_cxx::__normal_iterator<Agent**, 
      std::vector<Agent*, std::allocator<Agent*> > >, Agent*&)

make: *** [agents] Error 1

Any ideas what my error could be?

My Hat says "#include <algorithm>" (or, as a second choice, "use std::find").

already including algorithm....and I also am doing "using namespace std;"

Well, then, out comes "small `compilable' example". (I mean, I made a small compilable example, but it compiled, so that doesn't help.)

I can't see any problem with the code posted, so you'll have to post more relevant stuff.
However, I do make it a point to never write:

Code:

if (boolean_expression)
    return true;
else
    return false;

when one can just write

Code:

return boolean_expression;

My version

Code:

class Region
{
public:
    vector<Agent *> RegionalAgents;
    bool ContainsAgent ( Agent *myAgent );
    bool find() {} // Conflict !
};

bool Region::ContainsAgent ( Agent *myAgent )
{
    if ( find(RegionalAgents.begin(), RegionalAgents.end(), myAgent) != RegionalAgents.end() )
        return true;
    else return false;
}

You're probably running afoul of the hiding rule in some way. Bin the "using namespace std;" line, and do the call as

Code:

   return (std::find(RegionalAgents.begin(), RegionalAgents.end(), myAgent) != RegionalAgents.end() );