Hi,
I am trying to use the ext/hash_map of gnu C++, but I observe some
strange behaviors, please help me, my code is :
#include <iostream>
#include <cstring>
#include <ext/hash_map>
using namespace std;
using namespace __gnu_cxx;
class SE {
public:
bool operator ()(const char *a, const char *b);
};
bool SE::operator ()(const char *a, const char *b)
{
return strcmp(a, b);
}
int main(int argc, char **argv)
{
hash_map<const char *, int, hash<const char *>, SE> map;
map["abc"] = 1;
map["ab"] = 10;
cout << map["abc"] << endl << map["ab"] << endl << map["d"] <<
endl;;
return 0;
}
------------------------
But to my surprise, all the three map["..."] output is '0', I am
wondering, is there any place I am writing wrong code?
Thanks!
Regards!
Bo
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