On Sunday, May 08, 2011 07:40:50 PM Robert Ramey wrote:

I'm very interested in fusion and have been experimenting with it.

There is one thing that is currently confusing me. (OK more than one thing). The documentation a typical function at .../fusion/sequence/concepts/associative_sequence.html shows valid expression

has_key<K>(s)

returning type

result_of::has_key::type

which is OK by me. But why doesn't fusion use:

#include then use boost::result_of::type

which would seem to me to reduce the size of fusion (and the docs) by around 50%. What am I missing here?

That boost::result_of does not work with plain old free functions.

Robert Ramey