std::experimental::ranges::identity - cppreference.com (original) (raw)

ranges::identity is a function object type whose operator() returns its argument unchanged. It is used as the default projection for all Ranges TS algorithms.

Contents

• 1 Nested types
• 2 Member functions
• 3 std::experimental::ranges:🆔:operator()
  • 3.1 Parameters
  • 3.2 Return value
  • 3.3 Example

[edit] Nested types

[edit] Member functions

| | returns the argument unchanged (public member function) | | ---------------------------------------------------------- |

std::experimental::ranges:🆔:operator()

| template< class T > constexpr T&& operator()( T&& t ) const noexcept; | | | | ---------------------------------------------------------------------- | | |

Returns std::forward<T>(t).

Parameters

Return value

std::forward<T>(t).

[edit] Example