System::Buffer class

Buffer class

Contains methods that manipulate raw byte arrays. This is a static type with no instance services. You should never create instances of it by any means.

class Buffer

Methods

MethodDescription
static BlockCopy(const uint8_t *, int, uint8_t *, int, int)Copies a specified number of bytes from source buffer to destination buffer.
static BlockCopy(const SharedPtr<Array<TSrc>>&, int, const SharedPtr<Array<TDst>>&, int, int)Interprets two specified typed arrays as raw arrays of bytes and copies data from one of them to another.
static BlockCopy(const System::Details::ArrayView<TSrc>&, int, const System::Details::ArrayView<TDst>&, int, int)Interprets two specified typed arrays as raw arrays of bytes and copies data from one of them to another.
static BlockCopy(const SharedPtr<Array<TSrc>>&, int, const System::Details::ArrayView<TDst>&, int, int)Interprets two specified typed arrays as raw arrays of bytes and copies data from one of them to another.
static BlockCopy(const System::Details::ArrayView<TSrc>&, int, const SharedPtr<Array<TDst>>&, int, int)Interprets two specified typed arrays as raw arrays of bytes and copies data from one of them to another.
static BlockCopy(const System::Details::StackArray<TSrc, NS>&, int, const System::Details::StackArray<TDst, ND>&, int, int)Interprets two specified typed arrays as raw arrays of bytes and copies data from one of them to another.
static BlockCopy(const SharedPtr<Array<TSrc>>&, int, const System::Details::StackArray<TDst, ND>&, int, int)Interprets two specified typed arrays as raw arrays of bytes and copies data from one of them to another.
static BlockCopy(const System::Details::StackArray<TSrc, NS>&, int, const SharedPtr<Array<TDst>>&, int, int)Interprets two specified typed arrays as raw arrays of bytes and copies data from one of them to another.
static ByteLength(const SharedPtr<Array<T>>&)Determines the number of bytes occupied by all elements of the specified array.
static ByteLength(const System::Details::ArrayView<T>&)Determines the number of bytes occupied by all elements of the specified array.
static ByteLength(const System::Details::StackArray<T, N>&)Determines the number of bytes occupied by all elements of the specified array.
static GetByte(const SharedPtr<Array<T>>&, int)Interprets the specified typed array as a raw byte array and retrieves the byte value at specified byte offset.
static GetByte(const System::Details::ArrayView<T>&, int)Interprets the specified typed array as a raw byte array and retrieves the byte value at specified byte offset.
static GetByte(const System::Details::StackArray<T, N>&, int)Interprets the specified typed array as a raw byte array and retrieves the byte value at specified byte offset.
static SetByte(const SharedPtr<Array<T>>&, int, uint8_t)Interprets the specified typed array as a raw byte array and sets the specified byte value at specified byte offset.
static SetByte(const System::Details::ArrayView<T>&, int, uint8_t)Interprets the specified typed array as a raw byte array and sets the specified byte value at specified byte offset.
static SetByte(const System::Details::StackArray<T, N>&, int, uint8_t)Interprets the specified typed array as a raw byte array and sets the specified byte value at specified byte offset.

Remarks

#include <system/buffer.h>

using namespace System;

void Print(const SmartPtr<Array<uint8_t>> &source, int size)
{
  for (auto i = 0; i < size; i++)
  {
    std::cout << static_cast<int>(source[i]) << ' ';
  }
  std::cout << std::endl;
}

int main()
{
  // Create and fill the array.
  const int SIZE = 16;
  auto first = MakeObject<Array<uint8_t>>(SIZE);
  for (auto i = 0; i < SIZE; ++i)
  {
    first[i] = static_cast<uint8_t>(i * 2);
  }

  // Print the array items.
  Print(first, SIZE);

  // Create an array that contains a part of the first one.
  auto second = MakeObject<Array<uint8_t>>(SIZE / 2);
  Buffer::BlockCopy(first, SIZE / 2, second, 0, SIZE / 2);

  // Print the items of the second array.
  Print(second, SIZE / 2);

  // Set the value of the item at index 0 and print the array items.
  Buffer::SetByte(second, 0, 128);
  Print(second, SIZE / 2);

  return 0;
}
/*
This code example produces the following output:
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30
16 18 20 22 24 26 28 30
128 18 20 22 24 26 28 30
*/

See Also

System::BoxedValueBase class System::Byte class