Result: Implement operator=()

luna/include/luna/Result.h

@@ -41,6 +41,29 @@ template <typename T> class Result
     {
     }
 
+    Result<T>& operator=(const Result<T>& other)
+    {
+        if (this == &other) return *this;
+
+        m_has_value = other.m_has_value;
+        m_error = other.m_error;
+        m_value = other.m_value;
+
+        return *this;
+    }
+
+    Result<T>& operator=(Result<T>&& other)
+    {
+        if (this == &other) return *this;
+
+        m_has_value = other.m_has_value;
+        other.m_has_value = false;
+        m_error = other.m_error;
+        m_value = move(other.m_value);
+
+        return *this;
+    }
+
     bool has_error() const
     {
         return !m_has_value;
@@ -135,6 +158,26 @@ template <> class Result<void>
     {
     }
 
+    Result<void>& operator=(const Result<void>& other)
+    {
+        if (this == &other) return *this;
+
+        m_has_error = other.m_has_error;
+        m_error = other.m_error;
+
+        return *this;
+    }
+
+    Result<void>& operator=(Result<void>&& other)
+    {
+        if (this == &other) return *this;
+
+        m_has_error = other.m_has_error;
+        m_error = other.m_error;
+
+        return *this;
+    }
+
     bool has_error() const
     {
         return m_has_error;