Merge pull request #64 from OpenVicProject/modifier-instance

ModifierEffects stored as instances

1 files changed, 1 insertions, 1 deletions

diff --git a/src/openvic-simulation/types/Date.cpp b/src/openvic-simulation/types/Date.cpp
index 8fbb859..c5eac41 100644
--- a/src/openvic-simulation/types/Date.cpp
+++ b/src/openvic-simulation/types/Date.cpp
@@ -214,7 +214,7 @@ Date::operator std::string() const {
 	return to_string();
 }
 
-std::ostream& OpenVic::operator<<(std::ostream& out, Date const& date) {
+std::ostream& OpenVic::operator<<(std::ostream& out, Date date) {
 	return out << static_cast<int>(date.getYear()) << Date::SEPARATOR_CHARACTER << static_cast<int>(date.getMonth())
 		<< Date::SEPARATOR_CHARACTER << static_cast<int>(date.getDay());
 }