1 files changed, 14 insertions, 0 deletions
diff --git a/src/PortID.hpp b/src/PortID.hpp
index efdd78d..84c08a4 100644
--- a/src/PortID.hpp
+++ b/src/PortID.hpp
@@ -21,6 +21,7 @@
 #include <iostream>
 #include <string>
 #include <tuple>
+#include <utility>
 
 /// An ID for some port on a client (program)
 struct PortID
@@ -133,4 +134,17 @@ operator<(const PortID& lhs, const PortID& rhs)
 	return false;
 }
 
+namespace std {
+
+template<>
+struct hash<PortID::Type>
+{
+	size_t operator()(const PortID::Type& v) const noexcept
+	{
+		return hash<unsigned>()(static_cast<unsigned>(v));
+	}
+};
+
+} // namespace std
+
 #endif // PATCHAGE_PORTID_HPP