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Move std::pair support into hash.hpp

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This commit is contained in:
Peter Dimov
2021-10-17 02:11:51 +03:00
parent a0a6fa0616
commit 7a29dee42a
2 changed files with 14 additions and 12 deletions
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12
include/boost/container_hash/extensions.hpp
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@@ -32,18 +32,6 @@
namespace boost namespace boost
{ {
template <class A, class B>
std::size_t hash_value(std::pair<A, B> const&);
template <class A, class B>
std::size_t hash_value(std::pair<A, B> const& v)
{
std::size_t seed = 0;
boost::hash_combine(seed, v.first);
boost::hash_combine(seed, v.second);
return seed;
}
#if !defined(BOOST_NO_CXX11_HDR_TUPLE) #if !defined(BOOST_NO_CXX11_HDR_TUPLE)
namespace hash_detail { namespace hash_detail {
template <std::size_t I, typename T> template <std::size_t I, typename T>

14
include/boost/container_hash/hash.hpp
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@@ -31,6 +31,7 @@
#include <iterator> #include <iterator>
#include <string> #include <string>
#include <complex> #include <complex>
#include <utility>
#include <climits> #include <climits>
#if !defined(BOOST_NO_CXX11_HDR_TYPEINDEX) #if !defined(BOOST_NO_CXX11_HDR_TYPEINDEX)
@@ -167,6 +168,19 @@ namespace boost
return seed; return seed;
} }
// pair
template <class A, class B>
std::size_t hash_value( std::pair<A, B> const& v )
{
std::size_t seed = 0;
boost::hash_combine( seed, v.first );
boost::hash_combine( seed, v.second );
return seed;
}
// ranges (list, set, deque...) // ranges (list, set, deque...)
template <typename T> template <typename T>