feat: add combined scale and format conversion templates

CHANGELOG.md

@@ -5,6 +5,12 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 and this project follows [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [0.5.3] - 2026-06-06
+
+### Added
+
+- Added `to<TargetScale, TargetFormat>()` and `to_with<TargetScale, TargetFormat>(ctx)` templates to `Time` and `EncodedTime` for simultaneous scale and format conversion.
+
 ## [0.5.2] - 2026-06-02
 
 ### Changed

CMakeLists.txt

@@ -1,5 +1,5 @@
 cmake_minimum_required(VERSION 3.15)
-project(tempoch_cpp VERSION 0.5.2 LANGUAGES CXX)
+project(tempoch_cpp VERSION 0.5.3 LANGUAGES CXX)
 
 set(CMAKE_CXX_STANDARD 17)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)

include/tempoch/time_base.hpp

@@ -224,6 +224,18 @@ template <typename S> class Time {
     return Time<TargetScale>(detail::scale_convert<S, TargetScale>(raw_, ctx.get()));
   }
 
+  template <typename TargetScale, typename TargetFormat,
+            std::enable_if_t<is_scale_v<TargetScale> && is_format_v<TargetFormat>, int> = 0>
+  EncodedTime<TargetScale, TargetFormat> to() const {
+    return to<TargetScale>().template to<TargetFormat>();
+  }
+
+  template <typename TargetScale, typename TargetFormat,
+            std::enable_if_t<is_scale_v<TargetScale> && is_format_v<TargetFormat>, int> = 0>
+  EncodedTime<TargetScale, TargetFormat> to_with(const TimeContext &ctx) const {
+    return to_with<TargetScale>(ctx).template to_with<TargetFormat>(ctx);
+  }
+
   template <typename TargetFormat, std::enable_if_t<is_format_v<TargetFormat>, int> = 0>
   EncodedTime<S, TargetFormat> to() const {
     return EncodedTime<S, TargetFormat>(detail::quantity_from_raw<TargetFormat>(
@@ -343,11 +355,23 @@ template <typename S, typename F> class EncodedTime {
     return Time<S>::from_encoded(*this).template to<TargetScale>();
   }
 
+  template <typename TargetScale, typename TargetFormat,
+            std::enable_if_t<is_scale_v<TargetScale> && is_format_v<TargetFormat>, int> = 0>
+  EncodedTime<TargetScale, TargetFormat> to() const {
+    return Time<S>::from_encoded(*this).template to<TargetScale, TargetFormat>();
+  }
+
   template <typename TargetScale, std::enable_if_t<is_scale_v<TargetScale>, int> = 0>
   Time<TargetScale> to_with(const TimeContext &ctx) const {
     return Time<S>::from_encoded_with(*this, ctx).template to_with<TargetScale>(ctx);
   }
 
+  template <typename TargetScale, typename TargetFormat,
+            std::enable_if_t<is_scale_v<TargetScale> && is_format_v<TargetFormat>, int> = 0>
+  EncodedTime<TargetScale, TargetFormat> to_with(const TimeContext &ctx) const {
+    return Time<S>::from_encoded_with(*this, ctx).template to_with<TargetScale, TargetFormat>(ctx);
+  }
+
   template <typename TargetFormat, std::enable_if_t<is_format_v<TargetFormat>, int> = 0>
   EncodedTime<S, TargetFormat> to() const {
     return Time<S>::from_encoded(*this).template to<TargetFormat>();