Solved: 20 - Constructors

modules/06_oop_basics/include/constructors.hpp

@@ -8,7 +8,7 @@ namespace oop {
 class StringBuilder {
 public:
     StringBuilder() = default;
-    explicit StringBuilder(std::string initial);
+    explicit StringBuilder(const std::string &initial);
     StringBuilder(const StringBuilder& other);
     auto operator=(const StringBuilder& other) -> StringBuilder&;
     ~StringBuilder() = default;