How to # enable hash with ext, tr1 or __gnu_cxx in XCode, C ++
I am trying to work with google-sparsehash library and I would like to include the hash library described in the link,
using ext::hash; // or __gnu_cxx::hash, or maybe tr1::hash, depending on your OS
and i tried one of them:
which didn't work with Xcode. I also "used" where I was told that __gnu_cxx does not contain a "hash". How to describe this library for XCode (3.2.6) on OS X (10.6.8)?
Or more generally, where is this hash function described in Mac / Xcode?
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