On 26 January 2015 at 06:39, Steven D'Aprano <steve@pearwood.info> wrote:
Note that in this case, at least, we do want a symmetric version of "is_close", since neither guess nor new_guess is "correct", they are both approximations.
true, but you are also asking the question -- is the new_guess much different that guess. Which points to a asymmetric test -- but either would work.
I can see we're going to have to argue about the "Close To" versus "Close" distinction :-)
I suggest that in the interest of not flooding everyone's inboxes, we take that off-list until we have either a concensus or at least agreement that we cannot reach concensus.
Does it need to go off-list? I'm still unclear about the arguments over asymmetric vs symmetric (I suspect, as you alluded to earlier, that they reflect a more fundamental problem, which is that there are 2 different types of use case with different constraints) so I'd like to at least be aware of the content of any discussion... Paul