simple_enum

Overview

enum_view is a class template that provides a range view over an enumeration, facilitating iteration over its values. It conforms to std::ranges::view_interface, ensuring compatibility with the Standard Library’s ranges.

Requirements

• enumeration: The enum type over which the view is created must satisfy the enum_concept, ensuring it is an enumeration.

Constructors

• Default Constructor: Initializes the view to cover the entire range of the enumeration. Requires the enumeration to satisfy bounded_enum, ensuring that first and last values are defined.

• Range Constructor: Initializes the view with custom first and last enumeration values provided.

Example Usage

constexpr auto view_over_lorem_ipsum = enum_view<lorem_ipsum>{} | std::views::transform(enum_name);
std::cout << "simple_enum " SIMPLE_ENUM_NAME_VERSION "\n";
for(auto data: view_over_lorem_ipsum)
    std::cout << " " << data << '\n';

This example demonstrates creating an enum_view over the lorem_ipsum enumeration, transforming it with enum_name for string representation, and iterating over the values to print them.

Deduction Guides

• enum_view(enumeration) -> enum_view<enumeration>;
• enum_view(enumeration, enumeration) -> enum_view<enumeration>;

These guides assist in the automatic deduction of the enum_view template arguments, simplifying its usage.

Notes

• enum_view leverages compile-time metadata to enable efficient iteration over enum ranges.
• It integrates seamlessly with C++20 ranges, offering a modern approach to enum iteration.