Re: [Boost-users] Needs advices on design ( mpl or processor )

I have no see yet your implementation and how I can help you in, but I guess that you can find your own responses in the implementation of this library

https://svn.boost.org/svn/boost/sandbox/SOC/2010/bit_masks/lib/integer/doc/h... Cool, I will have a look at it.

In addition to what you want to do, I think that all this stuff can be generalized to a compressed_tuple.

About compressed_tuple.

Tuples of types can be compressed depending on the bits needed to store the underlying type of each one of the tuple elements. For example a compressed_tuple would take 3 bytes, but month needs only 5 bits, day 3 bits and weekday 3 bits, that is 11 bits which can be represented using just 2 bytes.

It sounds interesting, and might be quite close to what I want, but not exactly: Say I need to store 11 weekday ( encoded as an int 0-6 ) in a compressed_tuple, then this would require 11 * 3 bits = 33 -> 5 bytes. If I store 11 weekdays in a compressed_enum the only requirement is that 7^11 < MAX_STORAGE_SIZE. 7^11 = 1977326743, which is less than 2^32 and would therefor require 4 bytes. Best regards Allan W. Nielsen