Re: Bidirectional range dilemma

[Phil Lavoie]

Personally,

I would have the policy implemented:
permutations( Policy p = Policy.forward )() {
...
}

And maybe extend it with aliases:

alias fPermutations permutations!( Policy.forward );
alias rPermutations permutations!( Policy.backward );
alias biPermutations permutations!( Policy.bidirectional );

Cheers!