iolist_size/1 in guard tests

Loïc Hoguin essen@REDACTED
Tue Jan 4 19:36:35 CET 2022


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 byte_size/1
>      > and bit_size/1?
>      >
>      > Cheers,
>      > Mark
> 

-- 
Loïc Hoguin
https://ninenines.eu


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