feat(composition): added stl compatible iterator

meson.build

@@ -18,7 +18,7 @@
 #   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 #
 # *********************************************************************** #
-project('libcomposition', 'cpp', version: 'v1.2.0', default_options: ['cpp_std=c++23'], meson_version: '>=1.5.0')
+project('libcomposition', 'cpp', version: 'v1.3.0', default_options: ['cpp_std=c++23'], meson_version: '>=1.5.0')
 
 # Add default visibility for all C++ targets
 add_project_arguments('-fvisibility=default', language: 'cpp')

src/composition/include/fourdst/composition/composition.h

@@ -512,5 +512,21 @@ namespace fourdst::composition {
         */
         Composition operator+(const Composition& other) const;
 
+        auto begin() {
+            return m_compositions.begin();
+        }
+
+        auto begin() const {
+            return m_compositions.cbegin();
+        }
+
+        auto end() {
+            return m_compositions.end();
+        }
+
+        auto end() const {
+            return m_compositions.cend();
+        }
+
     };
 }; // namespace fourdst::composition