Re: [boost] Interest for a perl6-like-junctions-class?

You can generalize it a step further when you can give a range to n_m_of(): n minimum number of values that must satisfy the test and m maximum number of values that must satisfy the test. Ok, ok no more complexity as necessary ;-) Your n_of would also be useful with the junctions approach (This provides all steps between "and" and "or" inclusive "xor" in one function).

Complexity that is missing from library will be reimplemented (likely with bugs and pain) by user. Properly named and documented and tested features are most convincing argument for people to use a tool. /Pavel