I think none of you got the point of equalRecurse, so let me
clarify.
equalRecurse should work on any type, not just inputRanges, see
my example in the OT with a struct containing an array: currently
std.algorithm.equal has isInputRange conditions on the arguments.
So, yes, it can go deep in practice (struct containing an array
of struct, etc), unlike nesting ranges where it's not common in
practice.
I wouldn't think it's that hard to do, at least for the common
cases in practice.
Maybe what was confusing is that I wanted it in std.algorithm,
but all functions in there operate on ranges, so maybe somewhere
else, but I don't see a relevant package. Maybe a new
std.algorithm2 for non-ranges?
Also, the OT's firstDifference would go there too, and I have a
recursive (to specified level) toStringRecurse that would belong
there too.
