mistake

libs/main/containers/pivector.h

@@ -1801,7 +1801,7 @@ public:
 	//! piCout << v; // {1, 2, 3, 4, 5}
 	//! \endcode
 	//! \~\sa \a append()
-	inline PIVector<T> & operator <<(T && e) { eturn push_back(std::move(e));}
+	inline PIVector<T> & operator <<(T && e) {return push_back(std::move(e));}
 
 	//! \brief
 	//! \~english Appends the given array `v` to the end of the array.