Hello, On Mon 27 Jul 2020 at 12:02AM +02, Jonas Bernoulli wrote: > Sean Whitton <spwhitton@spwhitton.name> writes: > >> On Sun 26 Jul 2020 at 06:58PM +02, Jonas Bernoulli wrote: >> >>> Also do so for some 'if' forms that lack an ELSE part. >>> Even go as far as using 'and' and 'not' instead of 'unless'. >> >> I don't follow "when the return value matters", could you explain? > > As in "when the caller consumes the returned value". The alternative > would be for the caller to not care about the value returned by the > callee and to instead call it for the side-effects only. > > By using `and' we can signal that care about the return value and by > using `when' that we care about the side-effects instead. Thank you for your reply. Just to confirm, this is just a convention, right? I hadn't come across it yet. -- Sean Whitton _______________________________________________ notmuch mailing list -- notmuch@notmuchmail.org To unsubscribe send an email to notmuch-leave@notmuchmail.org