🚀Announcing conjure_enum - a C++20 enum and typename reflection Library

We're pleased to announce the release of conjure_enum, a lightweight header-only C++20 library designed to streamline working with enums and typenames by providing simple reflection capability.

Yes, there is magic_enum - and we based this implementation on the core of magic_enum, but refocused for C++20, using some of the key features of this newer language version such constexpr algorithms, std::source_location, std::to_array and concepts; we also improved and expanded the API.

✨Here's a closer look:

Single Header-Only: No external dependencies, simplifying integration into your project

Modern C++20: Entirely constexpr for compile-time safety, efficiency and performance; no macros

Broad Support: Works with

• scoped and unscoped enums
• enum aliases
• gaps
• anonymous and named namespaced enums and types

Simple & Easy to Use: Class-based (rather than namespaced) approach with intuitive syntax

Convenient: enum_bitset provides an enhanced enum aware std::bitset

Useful: conjure_type gives you the type string of any typename

Wide Compiler Compatibility: Support for:

• GCC
• Clang
• MSVC
• XCode/Apple Clang

Testing: Includes comprehensive unit tests for reliable functionality

Expanded: Enhanced API:

• add_scope
• remove_scope
• unscoped_string_to_enum
• for_each_n
• dispatch
• iterators and more!

Transparency: Compiler implementation variability fully documented, verifiable and reportable

Full documentation: with many examples as well as example applications

Summary of main differences, including expanded API.

magic_enum	conjure_enum
functions within namespace	static methods within class
	pure C++20
uses __PRETTY_FUNCTION__	uses std::source_location
	transparent compiler specifics
	scoped_entries
	unscoped_entries
	rev_scoped_entries
	unscoped_names
	remove_scope
	add_scope
	unscoped_string_to_enum
	enum_to_string (noscope option)
	for_each_n
	dispatch
	enum_bitset (string ctor with std::exception, enhanced API)
	enum_bitset::for_each
	enum_bitset::for_each_n
	conjure_type
containers::array
containers::set

Performance test vs magic_enum

We ran the following test case on a Windows 11 ThinkCentre 13th Gen Intel(R) Core(TM) i7-13700, 32Gb; MSVC 2022 / 17.10.5.

int test_magic_enum(std::errc err) { return magic_enum::enum_name(err).size(); }
int test_conjure_enum(std::errc err) { return FIX8::conjure_enum<std::errc>::enum_to_string(err).size(); }

Currently on the dev branch (will be merged to main soon):

Test	Timing
std::errc to string (magic_enum)	0.385 sec
std::errc to string (conjure_enum minimal)	0.464 sec

Compile ran three times, avg over 3 runs taken, linker times omitted.

Released under the MIT license.

🔗conjure_enum on github
🔗vcpkg