Invocation

Description

Trait invocation.

Modules
	lazy

Classes
struct	meta::defer< C, Ts >
	A wrapper that defers the instantiation of a template C with type parameters Ts in a lambda or let expression. More...
struct	meta::defer_i< T, C, Is >
	A wrapper that defers the instantiation of a template C with integral constant parameters Is in a lambda or let expression. More...
struct	meta::id< T >
	A trait that always returns its argument T. It is also an invocable that always returns T. More...

Typedefs
template<trait T>
using	meta::_t = typename T::type
	Type alias for T::type.
template<invocable Fn, typename L >
using	meta::apply = _t< extension::apply< Fn, L > >
	Applies the invocable Fn using the types in the type list L as arguments.
template<template< typename... > class C, typename... Ts>
using	meta::defer_trait = defer< detail::_t_t, detail::defer_< C, Ts... > >
	A wrapper that defers the instantiation of a trait C with type parameters Ts in a lambda or let expression. More...
template<typename T , template< T... > class C, T... Is>
using	meta::defer_trait_i = defer< detail::_t_t, detail::defer_i_< T, C, Is... > >
	A wrapper that defers the instantiation of a trait C with integral constant parameters Is in a lambda or let expression. More...
template<invocable Fn, typename... Args>
using	meta::invoke = typename Fn::template invoke< Args... >
	Evaluate the invocable Fn with the arguments Args.

Variables
template<integral T>
constexpr T::type::value_type	meta::_v = T::type::value
	Variable alias for T::type::value. More...

Typedef Documentation

defer_trait

template<template< typename... > class C, typename... Ts>

using meta::defer_trait = typedef defer<detail::_t_t, detail::defer_<C, Ts...> >

#include <meta/meta.hpp>

A wrapper that defers the instantiation of a trait C with type parameters Ts in a lambda or let expression.

See also

defer

defer_trait_i

template<typename T , template< T... > class C, T... Is>

using meta::defer_trait_i = typedef defer<detail::_t_t, detail::defer_i_<T, C, Is...> >

#include <meta/meta.hpp>

A wrapper that defers the instantiation of a trait C with integral constant parameters Is in a lambda or let expression.

See also

defer_i

Variable Documentation

_v

template<integral T>

constexpr T::type::value_type meta::_v = T::type::value

#include <meta/meta.hpp>

Variable alias for T::type::value.

Note

Requires C++14 or greater.