I want to pass a hashset to std/algorithm's nextPermutation and can't because nextPermutation accepts an OpenArray (an array or sequence), but not a hashset.
Are my options then: * copy my hashset into a sequence for use with other std/procs that require OpenArray's, or, * don't use hashsets and just use a sequence with .deduplicate to sort of reproduce the benefit of the hashset? New to programming so the answer (or other options) aren't clear to me.
