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// With g++ 4.3 ext/hash_map is deprecated. The following example shows how to
// use hashes with version >= 4.3:
// FOR NOW, THE OPTION -std=c++0x IS REQUIRED
#include <iostream>
#include <string>
#include <unordered_map>
using namespace std;
class Hash
{
public:
size_t operator()(char const *str) const
{
size_t ret = 0;
for (size_t idx = 0; *str; ++idx, ++str)
ret += idx + *str;
return ret;
}
};
int main(int argc, char *const *const argv)
{
pair<char const *, int> d[] =
{
pair<char const *, int>("aap", 18),
pair<char const *, int>("noot", 20),
pair<char const *, int>("wim", 30)
};
unordered_map<char const *, int, hash<char const *>> hcp(d, d + 3);
cout << hcp["noot"] << endl;
}
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