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-rw-r--r--lib/stream_support.hpp7
1 files changed, 7 insertions, 0 deletions
diff --git a/lib/stream_support.hpp b/lib/stream_support.hpp
index 2ab2f9d..5f45cbf 100644
--- a/lib/stream_support.hpp
+++ b/lib/stream_support.hpp
@@ -47,6 +47,13 @@ namespace std {
return (s << std::span {v});
}
+ template<typename First, typename Second>
+ std::ostream &
+ operator<<(std::ostream & s, const std::pair<First, Second> & v)
+ {
+ return (s << '(' << v.first << ", " << v.second << ')');
+ }
+
inline std::ostream &
operator<<(std::ostream & s, const Arc & arc)
{