Manipulation of types

Traits to change types. More...

Classes
struct	util::with_const_as< Base, Key >
	Trait with type Base, plus the constantness as in Key. More...
struct	util::strip_referenceness_type< T >
	Trait with type T stripped of all known reference types. More...
struct	util::reference_addresser
	Functor applying the proper referenced_address() function. More...
struct	util::lvalue_reference_into_wrapper_type< T >
	Trait with type T into std::reference_wrapper if reference. More...

Typedefs
template<typename Base , typename Key >
using	util::with_const_as_t = typename with_const_as< Base, Key >::type
	The type Base, plus the constantness as in Key. More...
template<typename T >
using	util::strip_referenceness_t = typename strip_referenceness_type< T >::type
	The type T stripped of all known reference types. More...
template<typename T >
using	util::lvalue_reference_into_wrapper_t = typename lvalue_reference_into_wrapper_type< T >::type
	The type T stripped of all known reference types. More...

Functions
template<typename Ref >
auto	util::referenced_address (Ref &&ref)
	Returns the address of the referenced object. More...
template<typename T >
auto	util::lvalue_reference_into_wrapper (T &&obj)
	Converts a l-value reference object into a std::reference_wrapper. More...

Detailed Description

Traits to change types.

Typedef Documentation

template<typename T >

using util::lvalue_reference_into_wrapper_t = typedef typename lvalue_reference_into_wrapper_type<T>::type

The type T stripped of all known reference types.

Template Parameters

T	type to remove referenceness from

See also

util::lvalue_reference_into_wrapper_type

Definition at line 610 of file MetaUtils.h.

template<typename T >

using util::strip_referenceness_t = typedef typename strip_referenceness_type<T>::type

The type T stripped of all known reference types.

Template Parameters

T	type to remove referenceness from

See also

util::strip_referenceness_type

Definition at line 539 of file MetaUtils.h.

template<typename Base , typename Key >

using util::with_const_as_t = typedef typename with_const_as<Base, Key>::type

The type Base, plus the constantness as in Key.

Template Parameters

Base	the basic type being returned
Key	a type expressing the constantness wanted for Base

See also

util::with_const_as

Definition at line 515 of file MetaUtils.h.

Function Documentation

template<typename T >

auto util::lvalue_reference_into_wrapper

(

T &&

obj

)

Converts a l-value reference object into a std::reference_wrapper.

Template Parameters

T	type of the object to be converted

Parameters

obj	object to be converted

Returns

either obj or a std::reference_wrapper around it

See also

util::lvalue_reference_into_wrapper_type

This function operates on a fashion similar to util::lvalue_reference_into_wrapper_type, but it performs the conversion of an instantiated object rather than just reporting a type.

Definition at line 624 of file MetaUtils.h.

  {
    return util::lvalue_reference_into_wrapper_t<T>(obj);
  }

template<typename Ref >

auto util::referenced_address

(

Ref &&

ref

)

Returns the address of the referenced object.

Template Parameters

Ref	type of reference

Parameters

ref

reference

Returns

a pointer to the referenced object

This function also manages std::reference_wrapper arguments, by returning the address of the object they reference. In all other cases, the return value is simply std::addressof(obj).

Definition at line 913 of file MetaUtils.h.

Referenced by util::reference_addresser::addressof().

  {
    return details::referenced_address_impl<Ref>::addressof(ref);
  }