The rjk::duck library leverages C++26 reflection to streamline type erasure, reducing boilerplate code and enhancing flexibility. Initially compatible with gcc's experimental features, it offers both owning and non-owning semantics as well as various interface adaptations.
The rjk::duck library addresses the complexity associated with type erasure in C++ programming. Traditionally, developers faced long, error-prone code when attempting to implement type erasure with constructs like std::any or std::function.
This library simplifies the process by utilizing C++26 reflection, making the implementation cleaner and more efficient.
This library allows developers to declare interfaces once while their pre-existing definitions can be used seamlessly. It offers ownership models, operational semantics, and more, emphasizing customization without compromising performance.
The entire library is encapsulated in a single header file, providing easy inclusion and usage.
Currently, rjk::duck only supports the gcc compiler with reflection capabilities enabled through flags -std=c++26 -freflection. This makes it suitable for developers exploring advanced C++26 features.
The library showcases unique uses of reflection, including tag generation and vtable code generation, which ultimately contribute to its efficiency.
One of the key components is the use of a custom annotation, [[=rjk::trait]], allowing types to be reflected upon for checking traits. Such reflections can assist in identifying characteristics and behaviors of types without elaborate code.
The transformation from traits to internal tags is essential for the library's functionality and illustrates the power of C++26's meta-programming features.
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The rjk::duck library leverages C++26 reflection to streamline type erasure, reducing boilerplate code and enhancing flexibility. Initially compatible with gcc's experimental features, it offers both owning and non-owning semantics as well as various interface adaptations.