Added isEmpty() to Readable_String.

Jupiter/Readable_String.h

@@ -49,6 +49,13 @@ namespace Jupiter
 		*/
 		virtual const T &get(size_t index) const = 0;
 
+		/**
+		* @brief Returns a pointer to the underlying string of elements.
+		*
+		* @return Pointer to the underlying string of elements.
+		*/
+		virtual const T *ptr() const = 0;
+
 		/**
 		* @brief Returns the number of elements in the String.
 		*
@@ -57,11 +64,11 @@ namespace Jupiter
 		virtual size_t size() const = 0;
 
 		/**
-		* @brief Returns a pointer to the underlying string of elements.
+		* @brief Checks if the String is empty.
 		*
-		* @return Pointer to the underlying string of elements.
+		* @return True if the String is empty, false otherwise.
 		*/
-		virtual const T *ptr() const = 0;
+		virtual bool isEmpty() const;
 
 		/**
 		* @brief Checks if the string contains an element with the specified value.

Jupiter/Readable_String_Imp.h

@@ -32,6 +32,13 @@
 *	Readable_String
 */
 
+// isEmpty
+
+template<typename T> bool Jupiter::Readable_String<T>::isEmpty() const
+{
+	return this->size() == 0;
+}
+
 // contains
 
 template<typename T> bool Jupiter::Readable_String<T>::contains(const T &value) const