typeutils.h File Reference

Provides helper classes for use with template metaprogramming and type analysis. The need for these will likely diminish as Regina switches to use more modern C++ standards. More...

#include <functional>
#include <typeinfo>
#include <stdexcept>
#include <variant>
#include "regina-core.h"

Classes
struct	regina::EnableIf< condition, T, defaultValue >
	A struct that holds either a single value of type T or nothing at all, depending on whether the given compile-time condition holds. More...

Namespaces
namespace	regina
	Contains the entire Regina calculation engine.

Typedefs
template<int pos, typename tuple , typename out_of_range = void>
using	regina::safe_tuple_element
	An alternative to std::tuple_element that gracefully handles an out-of-range index.

Functions
template<int from, int to, class Action >
constexpr void	regina::for_constexpr (Action &&action)
	Implements a compile-time for loop over a range of integers.
template<int... values, class Action >
constexpr void	regina::foreach_constexpr (Action &&action)
	Implements a compile-time for loop over a given set of integers.
template<int... values, class Action >
constexpr void	regina::foreach_constexpr (std::integer_sequence< int, values... >, Action &&action)
	Implements a compile-time for loop over a given set of integers.
template<int from, int to, typename Return , class Action >
constexpr Return	regina::select_constexpr (int value, Action &&action)
	Implements a compile-time selection, where the runtime argument must belong to a compile-time range of integers, and the value of the argument determines what is returned.
template<int from, int to, class Action >
constexpr auto	regina::select_constexpr_as_variant (int value, Action &&action)
	A variant of select_constexpr() where the return type is a variant, built from the return types for all integers in the given compile-time range.
const char *	regina::pythonTypename (const std::type_info *t)
	Returns the preferred Python display name for the given C++ type.

Detailed Description

Provides helper classes for use with template metaprogramming and type analysis. The need for these will likely diminish as Regina switches to use more modern C++ standards.