seqan3::list_traits Namespace Reference

Namespace containing traits for working on seqan3::type_list. More...

Typedefs
Type list traits (return a single type)
template<ptrdiff_t idx, seqan3::detail::type_list_specialisation list_t>
using	at = typename decltype(detail::at< idx >(list_t{}))::type
	Return the type at given index from the type list. More...
template<seqan3::detail::type_list_specialisation list_t>
using	front = typename decltype(detail::front(list_t{}))::type
	Return the first type from the type list. More...
template<seqan3::detail::type_list_specialisation list_t>
using	back = typename decltype(detail::back(list_t{}))::type
	Return the last type from the type list. More...
Type list traits (return a type list)
template<typename ... lists_t>
using	concat = decltype(detail::concat(lists_t{}...))
	Join two seqan3::type_list s into one. More...
template<seqan3::detail::type_list_specialisation list_t>
using	drop_front = decltype(detail::drop_front(list_t{}))
	Return a seqan3::type_list of all the types in the type list, except the first. More...
template<ptrdiff_t i, seqan3::detail::type_list_specialisation list_t>
using	take = typename decltype(detail::split_after< i >(type_list<>{}, list_t{}))::first_type
	Return a seqan3::type_list of the first n types in the input type list. More...
template<ptrdiff_t i, seqan3::detail::type_list_specialisation list_t>
using	drop = typename decltype(detail::split_after< i >(type_list<>{}, list_t{}))::second_type
	Return a seqan3::type_list of the types in the input type list, except the first n. More...
template<ptrdiff_t i, seqan3::detail::type_list_specialisation list_t>
using	take_last = drop< size< list_t > - i, list_t >
	Return a seqan3::type_list of the last n types in the input type list. More...
template<ptrdiff_t i, seqan3::detail::type_list_specialisation list_t>
using	drop_last = take< size< list_t > - i, list_t >
	Return a seqan3::type_list of the types the input type list, except the last n. More...
template<ptrdiff_t i, seqan3::detail::type_list_specialisation list_t>
using	split_after = decltype(detail::split_after< i >(type_list<>{}, list_t{}))
	Split a seqan3::type_list into two parts returned as a pair of seqan3::type_list. More...
template<template< typename > typename trait_t, seqan3::detail::type_list_specialisation list_t>
using	transform = decltype(detail::transform< trait_t >(list_t{}))
	Apply a transformation trait to every type in the list and return a seqan3::type_list of the results. More...
template<typename replace_t , std::ptrdiff_t i, seqan3::detail::type_list_specialisation list_t>
using	replace_at = decltype(detail::replace_at< replace_t >(detail::split_after< i >(type_list<>{}, list_t{})))
	Replace the type at the given index with the given type. More...

Variables
Type list traits (return a value)
template<typename ... pack_t>
constexpr size_t	size< type_list< pack_t... > > = sizeof...(pack_t)
	The size of a type list. More...
template<typename query_t , typename ... pack_t>
constexpr ptrdiff_t	count< query_t, type_list< pack_t... > >
	Count the occurrences of a type in a type list. More...
template<typename query_t , typename ... pack_t>
constexpr ptrdiff_t	find< query_t, type_list< pack_t... > >
	Get the index of the first occurrence of a type in a type list. More...
template<template< typename > typename pred_t, typename ... pack_t>
constexpr ptrdiff_t	find_if< pred_t, type_list< pack_t... > >
	Get the index of the first type in a type list that satisfies the given predicate. More...
template<typename query_t , seqan3::detail::type_list_specialisation list_t>
constexpr bool	contains = (find<query_t, list_t> != -1)
	Whether a type occurs in a type list or not. More...

Detailed Description

Namespace containing traits for working on seqan3::type_list.