thrust::identity< T > Struct Template Reference

#include <thrust/functional.h>

Public Types
typedef T	argument_type
	The type of the function object's first argument.
typedef T	result_type
	The type of the function object's result;.

Public Member Functions
__thrust_exec_check_disable__ __host__ __device__ constexpr const T &	operator() (const T &x) const

Detailed Description

template<typename T = void>
struct thrust::identity< T >

identity is a Unary Function that represents the identity function: it takes a single argument x, and returns x.

Template Parameters

T	No requirements on T.

The following code snippet demonstrates that identity returns its argument.

#include <thrust/functional.h>
#include <assert.h>
...
int x = 137;
thrust::identity<int> id;
assert(x == id(x));

See also

https://en.cppreference.com/w/cpp/utility/functional/identity

unary_function

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The documentation for this struct was generated from the following file:

• thrust/functional.h