16 Library introduction [library]

16.3 Method of description [description]

16.3.3 Other conventions [conventions]

16.3.3.3 Type descriptions [type.descriptions]

16.3.3.3.5 Customization Point Object types [customization.point.object]

1
#
A customization point object is a function object ([function.objects]) with a literal class type that interacts with program-defined types while enforcing semantic requirements on that interaction.
2
#
The type of a customization point object, ignoring cv-qualifiers, shall model semiregular ([concepts.object]).
3
#
All instances of a specific customization point object type shall be equal ([concepts.equality]).
The effects of invoking different instances of a specific customization point object type on the same arguments are equivalent.
4
#
The type T of a customization point object, ignoring cv-qualifiers, shall model invocable<T&, Args...>, invocable<const T&, Args...>, invocable<T, Args...>, and invocable<const T, Args...> ([concept.invocable]) when the types in Args... meet the requirements specified in that customization point object's definition.
When the types of Args... do not meet the customization point object's requirements, T shall not have a function call operator that participates in overload resolution.
5
#
For a given customization point object o, let p be a variable initialized as if by auto p = o;.
Then for any sequence of arguments args..., the following expressions have effects equivalent to o(args...):
  • (5.1)
    p(args...)
  • (5.2)
    as_const(p)(args...)
  • (5.3)
    std​::​move(p)(args...)
  • (5.4)
    std​::​move(as_const(p))(args...)
pFad - Phonifier reborn

Pfad - The Proxy pFad of © 2024 Garber Painting. All rights reserved.

Note: This service is not intended for secure transactions such as banking, social media, email, or purchasing. Use at your own risk. We assume no liability whatsoever for broken pages.


Alternative Proxies:

Alternative Proxy

pFad Proxy

pFad v3 Proxy

pFad v4 Proxy