error: 'hash_map' is not a member of 'std'

Question

Here is my 'program':

#include <string>
#include <ext/hash_map>

int main()
{
    std::hash_map<std::string, int>  myMap;
}

I'm trying to compile it with g++ on Red Hat. Can someone explain why does the compiler complain:

error: 'hash_map' is not a member of 'std'

See this: http://stackoverflow.com/questions/5908581/is-hash-map-part-of-the-stl — 1FpGLLjZSZMx6k, Sep 16 '13 at 17:25

score 1 · Accepted Answer · answered Sep 16 '13 at 17:26

1

The hash_map in is in a different namespace, namely __gnu_cxx::hash_map. More recent versions of hash maps are std::tr1::unordered_map or since c++11 std::unordered_map

answered Sep 16 '13 at 17:26

b.buchhold

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error: 'hash_map' is not a member of 'std'

1 Answers1