GCC中使用hash_map

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GCC中使用hash_map

Using hash_map on GCC

If you have tried to use some STL containers with GCC, such as hash_map:

// error: hash_map: No such file or directory
#include <hash_map>

int main()
{

// error: ‘hash_map’ is not a member of ‘std’
std::hash_map<int,int> hm;

return 0;
}