scl-utility
ScL.Utility
Common C++20 utilities not available in the standard library.
ScL.Utility is a header-only module of the ScL Toolkit providing compile-time meta-programming helpers, preprocessor utilities, and extended type traits. Licensed under The Unlicense.
Features
- Meta — compile-time name extraction without RTTI:
type_name<T>/type_short_name<T>— human-readable type namesenum_name<V>/enum_short_name<V>— enum member namessymbol_name<S>/symbol_short_name<S>— function and data member names
- Preprocessor — macro utilities:
SCL_FORWARD— identity macro for token forwarding in macro chainsSCL_COUNTER_VALUE/SCL_COUNTER_NEXT— compile-time counter via ADL
- Type traits — extended helpers:
- Detection idiom (
is_detected,detected_t,detected_or) forward_like— forward with value category of another typemember_like— member pointer trait decompositionoverload_cast<Args...>— overloaded function pointer disambiguation
- Detection idiom (
Requirements
- C++20 compiler (MSVC 19.30+, GCC 13+, Clang 16+)
- CMake 3.20+
Installation
Add the module as a subdirectory and link against the interface target:
add_subdirectory(module/utility)
target_link_libraries(your_target PRIVATE scl::utility)
Quick example
#include <scl/utility/meta/type.h>
#include <scl/utility/meta/enum.h>
#include <iostream>
enum class Color { Red, Green, Blue };
int main() {
// Compile-time type name
constexpr auto name = scl::type_name<std::vector<int>>();
std::cout << name << std::endl;
// Compile-time enum member name
constexpr auto color = scl::enum_name<Color::Red>();
std::cout << color << std::endl; // "Color::Red"
}