diff --git a/CMakeLists.txt b/CMakeLists.txt
index 57c4e7e..34f9df5 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -168,8 +168,8 @@ endif()
 
 
 
-add_executable(exe EXCLUDE_FROM_ALL main.cpp)
-target_link_libraries(exe PUBLIC ${PROJECT_NAME})
+# add_executable(exe EXCLUDE_FROM_ALL main.cpp)
+# target_link_libraries(exe PUBLIC ${PROJECT_NAME})
 
 # get_target_property(ZZ exe INCLUDE_DIRECTORIES)
 
diff --git a/mcc_serializer.h b/mcc_serializer.h
new file mode 100644
index 0000000..5f2fc8b
--- /dev/null
+++ b/mcc_serializer.h
@@ -0,0 +1,77 @@
+#pragma once
+
+#include <concepts>
+
+#include "mcc_concepts.h"
+#include "mcc_traits.h"
+
+namespace mcc
+{
+
+
+struct mcc_serializer_interface_t {
+    virtual ~mcc_serializer_interface_t() = default;
+
+    template <std::derived_from<mcc_serializer_interface_t> SelfT, traits::mcc_output_char_range R, typename ValueT>
+    mcc_error_c auto operator()(this SelfT&& self, R& output, ValueT&& value)
+    {
+        return std::forward<SelfT>(self).operator=(output, std::forward<ValueT>(value));
+    }
+};
+
+template <typename T>
+concept mcc_serializer_c = std::derived_from<T, mcc_serializer_interface_t>;
+
+
+template <typename VT>
+class MccSerializer : public mcc_serializer_interface_t
+{
+public:
+    static constexpr std::string_view defaultDelimiter{","};
+
+    typedef std::error_code error_t;
+
+    MccSerializer() = default;
+
+    ~MccSerializer() = default;
+
+    error_t operator()(traits::mcc_output_char_range auto& output, VT&& value)
+        requires std::formattable<VT, char>
+    {
+        std::format_to(std::back_inserter(output), "{}", value);
+
+        return {};
+    }
+
+protected:
+    std::string _delimiter{defaultDelimiter};
+};
+
+
+
+template <mcc_angle_c T>
+class MccSerializer<T> : public mcc_serializer_interface_t
+{
+public:
+    error_t operator()(traits::mcc_output_char_range auto& output, T&& value)
+    {
+        std::format_to(std::back_inserter(output), "{}", value.degrees());
+
+        return {};
+    }
+};
+
+
+static_assert(mcc_serializer_c<MccSerializer<float>>, "!!!");
+
+static_assert(mcc_serializer_c<MccSerializer<impl::MccAngle>>, "!!!");
+
+void f()
+{
+    MccSerializer<impl::MccAngle> s;
+
+    std::string str;
+    s(str, impl::MccAngleALT{1.1});
+}
+
+}  // namespace mcc