Provide various metafunctions. More...
Classes | |
interface | seqan3::compatible_concept |
Two types are "compatible" if their seqan3::dimension_v and their seqan3::innermost_value_type_t are the same. More... | |
struct | seqan3::const_reference< t > |
Type metafunction that returns the const_reference of another type [metafunction declaration]. More... | |
struct | seqan3::const_reference< rng_t > |
Type metafunction that returns the const_reference of another type [specialisation for input ranges]. More... | |
struct | seqan3::difference_type< t > |
Type metafunction that returns the difference_type of another type [metafunction declaration]. More... | |
struct | seqan3::difference_type< it_t > |
Type metafunction that returns the difference_type of another type [specialisation for iterators]. More... | |
struct | seqan3::difference_type< rng_t > |
Type metafunction that returns the difference_type of another type [specialisation for ranges]. More... | |
struct | seqan3::innermost_value_type< t > |
Recursively determines the value_type on containers and/or iterators [Type metafunction]. More... | |
struct | seqan3::reference< t > |
Type metafunction that returns the reference of another type [metafunction declaration]. More... | |
struct | seqan3::reference< it_t > |
Type metafunction that returns the reference of another type [specialisation for input iterators]. More... | |
struct | seqan3::reference< rng_t > |
Type metafunction that returns the reference of another type [specialisation for input ranges]. More... | |
struct | seqan3::rvalue_reference< t > |
Type metafunction that returns the rvalue_reference of another type [metafunction declaration]. More... | |
struct | seqan3::rvalue_reference< it_t > |
Type metafunction that returns the rvalue_reference of another type [specialisation for input iterators]. More... | |
struct | seqan3::rvalue_reference< rng_t > |
Type metafunction that returns the rvalue_reference of another type [specialisation for input ranges]. More... | |
struct | seqan3::size_type< t > |
Type metafunction that returns the size_type of another type [metafunction declaration]. More... | |
struct | seqan3::size_type< it_t > |
Type metafunction that returns the size_type of another type [specialisation for iterators]. More... | |
struct | seqan3::size_type< rng_t > |
Type metafunction that returns the size_type of another type [specialisation for sized ranges]. More... | |
struct | seqan3::value_type< t > |
Type metafunction that returns the value_type of another type [metafunction declaration]. More... | |
struct | seqan3::value_type< it_t > |
Type metafunction that returns the value_type of another type [specialisation for input iterators]. More... | |
struct | seqan3::value_type< rng_t > |
Type metafunction that returns the value_type of another type [specialisation for input ranges]. More... | |
Macros | |
#define | SEQAN3_IS_CONSTEXPR(...) noexcept(seqan3::detail::is_constexpr_helper( (__VA_ARGS__, 0) )) |
Returns true if the expression passed to this macro can be evaluated at compile time, false otherwise. More... | |
Typedefs | |
template<typename t > | |
using | seqan3::const_reference_t = typename const_reference< t >::type |
Type metafunction shortcut for seqan3::const_reference. More... | |
template<typename t > | |
using | seqan3::difference_type_t = typename difference_type< t >::type |
Type metafunction shortcut for seqan3::difference_type. More... | |
template<typename t > | |
using | seqan3::innermost_value_type_t = typename innermost_value_type< t >::type |
Shortcut for seqan3::innermost_value_type. | |
template<typename t > | |
using | seqan3::reference_t = typename reference< t >::type |
Type metafunction shortcut for seqan3::reference. More... | |
template<typename t > | |
using | seqan3::remove_cvref_t = std::remove_cv_t< std::remove_reference_t< t > > |
Return the input type with const , volatile and references removed [Type metafunction]. More... | |
template<typename t > | |
using | seqan3::rvalue_reference_t = typename rvalue_reference< t >::type |
Type metafunction shortcut for seqan3::rvalue_reference. More... | |
template<typename t > | |
using | seqan3::size_type_t = typename size_type< t >::type |
Type metafunction shortcut for seqan3::size_type. More... | |
template<typename type_t , typename default_t > | |
using | transformation_trait_or_t = typename transformation_trait_or< type_t, default_t >::type |
Helper type of seqan3::detail::transformation_trait_or. | |
template<typename t > | |
using | seqan3::value_type_t = typename value_type< t >::type |
Type metafunction shortcut for seqan3::value_type. More... | |
Variables | |
template<typename t > | |
constexpr size_t | seqan3::dimension_v = 1 |
Returns the number of times you can call seqan3::value_type_t recursively on t [Value metafunction]. More... | |
Provide various metafunctions.
#define SEQAN3_IS_CONSTEXPR | ( | ... | ) | noexcept(seqan3::detail::is_constexpr_helper( (__VA_ARGS__, 0) )) |
Returns true if the expression passed to this macro can be evaluated at compile time, false otherwise.
using seqan3::const_reference_t = typedef typename const_reference<t>::type |
Type metafunction shortcut for seqan3::const_reference.
t | The type you wish to query. |
using seqan3::difference_type_t = typedef typename difference_type<t>::type |
Type metafunction shortcut for seqan3::difference_type.
t | The type you wish to query. |
using seqan3::reference_t = typedef typename reference<t>::type |
Type metafunction shortcut for seqan3::reference.
t | The type you wish to query. |
using seqan3::remove_cvref_t = typedef std::remove_cv_t<std::remove_reference_t<t> > |
Return the input type with const
, volatile
and references removed [Type metafunction].
t | The type to operate on. |
using seqan3::rvalue_reference_t = typedef typename rvalue_reference<t>::type |
Type metafunction shortcut for seqan3::rvalue_reference.
t | The type you wish to query. |
using seqan3::size_type_t = typedef typename size_type<t>::type |
Type metafunction shortcut for seqan3::size_type.
t | The type you wish to query. |
using seqan3::value_type_t = typedef typename value_type<t>::type |
Type metafunction shortcut for seqan3::value_type.
t | The type you wish to query. |
constexpr size_t seqan3::dimension_v = 1 |
Returns the number of times you can call seqan3::value_type_t
recursively on t [Value metafunction].
t | The type to be queried; must resolve seqan3::value_type_t at least once. |
Attention, this metafunction implicitly removes cv-qualifiers and reference from the types it recurses on and returns.