Christopher Kohlhoff 387f74f575 Add user-defined literals for asio buffer types. ...

The _buf literal suffix, defined in namespace asio::buffer_literals, may
be used to create const_buffer objects from string, binary integer, and
hexadecimal integer literals. These buffer literals may be arbitrarily
long. For example:

  using namespace asio::buffer_literals;

  asio::const_buffer b1 = "hello"_buf;
  asio::const_buffer b2 = 0xdeadbeef_buf;
  asio::const_buffer b3 = 0x01234567'89abcdef'01234567'89abcdef_buf;
  asio::const_buffer b4 = 0b1010101011001100_buf;

The memory associated with a buffer literal is valid for the lifetime of
the program. This means that the buffer can be safely used with
asynchronous operations:

  async_write(my_socket, "hello"_buf, my_handler);

2023-03-01 23:07:32 +11:00

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