Array Container

Where the standard library provides std::array<>, Asio:

Provides overloads for the buffer() function.
Uses it in preference to boost::array<> for the ip::address_v4::bytes_type and ip::address_v6::bytes_type types.
Uses it in preference to boost::array<> where a fixed size array type is needed in the implementation.

Support for std::array<> is automatically enabled for g++ 4.3 and later, when the -std=c++0x or -std=gnu++0x compiler options are used, as well as for Microsoft Visual C++ 10. It may be disabled by defining ASIO_DISABLE_STD_ARRAY, or explicitly enabled for other compilers by defining ASIO_HAS_STD_ARRAY.