Re: [Boost-users] Is there a something in boost to facilitate binary buffer transformations into typed data structures/classes?

30 May 2008

      On Fri, May 30, 2008 at 7:17 AM, Roman Perepelitsa
<roman.perepelitsa@gmail.com> wrote:
...
Scott McMurray <me22.ca+boost <at> gmail.com> writes:
...
std::copy( binary_buffer.begin(), binary_buffer.end(),
reinterpret_cast<char*>(&dr) );
Or:
memcpy(&dr, &buffer[0], buffer.size());
Though a good implementation will have implemented std::copy for bytes
with memcpy.
...
Or use union to avoid making a copy:
union {
 data d;
 unsigned char bytes[4];
} u;
bytes[0] = 3;
bytes[1] = 6;
bytes[2] = 0;
bytes[3] = 9;
// use d.first, d.second, d.third
If your compiler allows that as an extension.  (GCC does, dunno about others.)

It's officially not allowed, last I checked.