home | login | register | DMCA | contacts | help | donate |      

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
А Б В Г Д Е Ж З И Й К Л М Н О П Р С Т У Ф Х Ц Ч Ш Щ Э Ю Я


my bookshelf | genres | recommend | rating of books | rating of authors | reviews | new | форум | collections | читалки | авторам | add
fantasy
space fantasy
fantasy is horrors
heroic
prose
  military
  child
  russian
detective
  action
  child
  ironical
  historical
  political
western
adventure
adventure (child)
child's stories
love
religion
antique
Scientific literature
biography
business
home pets
animals
art
history
computers
linguistics
mathematics
religion
home_garden
sport
technique
publicism
philosophy
chemistry
close

Loading...


Description

Pointer_to_binary_function is a function object adaptor that allows a function pointer Result (*f)(Arg1, Arg2) to be treated as an Adaptable Binary Function . That is: if F is a pointer_to_binary_function that was initialized with an underlying function pointer f of type Result (*)(Arg1, Arg2), then F(x, y) calls the function f(x, y). The difference between f and F is that pointer_to_binary_function is an Adaptable Binary Function, i.e. it defines the nested typedef s first_argument_type, second_argument_type, and result_type.

Note that a function pointer of type Result (*)(Arg1, Arg2) is a perfectly good Binary Function object, and may be passed to an STL algorithm that expects an argument that is a Binary Function . The only reason for using the pointer_to_binary_function class is if you need to use an ordinary function in a context that requires an Adaptable Binary Function, e.g. as the argument of a function object adaptor.

Most of the time, you need not declare an object of type pointer_to_binary_function directly. It is almost always easier to construct one using the ptr_fun function.


pointer_to_binary_function < Arg1, Arg2, Result > | Standard Template Library Programmer`s Guide | Example







Loading...