From 7b8ad8e37cdb2c3a4c1342d257ecb65b5e539d9f Mon Sep 17 00:00:00 2001
From: Ramzi Sabra <yasamoka@hotmail.com>
Date: Fri, 17 Apr 2020 06:42:35 +0300
Subject: [PATCH] changed hectare to an alias_unit

---
 src/include/units/physical/si/area.h | 2 +-
 test/unit_test/static/si_test.cpp    | 2 ++
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/include/units/physical/si/area.h b/src/include/units/physical/si/area.h
index 6ff4938b..69990d58 100644
--- a/src/include/units/physical/si/area.h
+++ b/src/include/units/physical/si/area.h
@@ -52,7 +52,7 @@ struct square_exametre : deduced_unit<square_exametre, dim_area, exametre> {};
 struct square_zettametre : deduced_unit<square_zettametre, dim_area, zettametre> {};
 struct square_yottametre : deduced_unit<square_yottametre, dim_area, yottametre> {};
 
-using hectare = square_hectometre;
+struct hectare : alias_unit<square_hectometre, "ha"> {};
 
 template<Unit U, Scalar Rep = double>
 using area = quantity<dim_area, U, Rep>;
diff --git a/test/unit_test/static/si_test.cpp b/test/unit_test/static/si_test.cpp
index 578284a0..f7dd6898 100644
--- a/test/unit_test/static/si_test.cpp
+++ b/test/unit_test/static/si_test.cpp
@@ -274,6 +274,8 @@ static_assert(10q_km * 10q_km == 100q_km2);
 static_assert(1q_m2 == 10'000q_cm2);
 static_assert(1q_ha == 10'000q_m2);
 
+static_assert(hectare::symbol == "ha");
+
 static_assert(detail::unit_text<dim_area, square_metre>() == basic_symbol_text("m²", "m^2"));
 
 // volume