C++

Reference

<array>

array

public member function
<array>

std::array::data

      value_type* data() noexcept;const value_type* data() const noexcept;
Get pointer to data
Returns a pointer to the first element in the array object.

Because elements in the array are stored in contiguous storage locations, the pointer retrieved can be offset to access any element in the array.

Parameters

none

Return Value

Pointer to the data contained by the array object.

If the array object is const-qualified, the function returns a pointer to const value_type. Otherwise, it returns a pointer to value_type.

Member type value_type is the type of the elements in the container, defined in array as an alias of its first template parameter (T).

Example

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// array::data
#include <iostream>
#include <cstring>
#include <array>

int main ()
{
  const char* cstr = "Test string";
  std::array<char,12> charray;

  std::memcpy (charray.data(),cstr,12);

  std::cout << charray.data() << '\n';

  return 0;
}

Output:
Test string


Complexity

Constant.

Iterator validity

No changes.

Data races

No contained elements are directly accessed by the call, but the pointer returned can be used to access or modify elements. Concurrently accessing or modifying different elements is safe.

Exception safety

No-throw guarantee: this member function never throws exceptions.

See also

array::begin
Return iterator to beginning (public member function)
array::front
Access first element (public member function)
array::operator[]
Access element (public member function)
array::fill
Fill array with value (public member function)