Re: iterator error

"Victor Bazarov" <>
Thu, 5 Apr 2007 21:14:39 -0400
Ian Collins wrote:

?????????? wrote:

windows xp, visual studio 2005
#include <iostream>
#include <map>
using namespace std;

int main()
map<int, int>::iterator it = 0;
if( it != 0 ) //break point,
this is an run time error?
why it can be assign "0", but can't compare with "0"?

That all depends on what the type of a std::map<int, int>::iterator is
and whether it cam be initialised by or compared to an int. If it
lacks a public constructor, the assignment is illegal and if it lacks
an operator==(int), the comparison is illegal.

It's actually operator!=(int) we're discussing here... Unless you think
they are related somehow...

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