RE: [Dev-C++] STL problem

> -----Original Message-----
> From: dev...@li... 
> [mailto:dev...@li...] On Behalf 
> Of Marcos Carrard
> Sent: Thursday, November 28, 2002 9:11 PM
> To: dev...@li...
> Subject: [Dev-C++] STL problem
> 
> 
> Hi!
> 
> I have a little problem with Dev in STL library. The problem is in 
> priority_queue  with declaration of function object for 
> relational test. 
> The source code is:
> 
> #include <iostream>
> #include <queue>

// for less<>
#include <functional>

// See below
#include <vector>

> 
> using namespace std;
> 
> int main()
> {
>     typedef priority_queue< int, less<int> > IntPQueue;   // HERE!!!!


priority_queue has 3 types, the 2 last having defaults:

The second is the vector<> where it stores the elements and the third is
the less<> which by default uses <.

In few words your less is redundant (and may even induce additional time
cost). So if you want to define the third argument you have to define
the second too:

typedef priority_queue< int, vector<int>, less<int> > IntPQueue;



Ioannis Vranos
 
* Programming pages: http://www.noicys.freeurl.com
* Alternative URL: http://run.to/noicys