iolist_size/1 in guard tests
Tue Jan 4 19:41:30 CET 2022
So guard BIFs are supposed to be O(1) not just side effect free?
On Tue, Jan 4, 2022 at 12:36 PM Loïc Hoguin <essen@REDACTED> wrote:
> Yes but that's considered a historical error.
> On 04/01/2022 18:38, Mark Jones wrote:
> > But length/1 is allowed in guard tests and it is O(N).
> > Cheers,
> > Mark
> > On Tue, Jan 4, 2022 at 2:53 AM Aleksander Nycz
> > <Aleksander.Nycz@REDACTED <mailto:Aleksander.Nycz@REDACTED>> wrote:
> > Probably
> > iolist_size/1 -> O(N)
> > byte_size/1 -> O(1)
> > Regards
> > Aleksander
> > W dniu 04.01.2022 o 09:49, Mark Jones pisze:
> > > Is there a reason iolist_size/1 is not a guard BIF like
> > > and bit_size/1?
> > >
> > > Cheers,
> > > Mark
> Loïc Hoguin
-------------- next part --------------
An HTML attachment was scrubbed...
More information about the erlang-questions