[m-users.] Error handling in io module

[Volker Wysk]

Am Sonntag, dem 12.02.2023 um 10:48 +1100 schrieb Julien Fischer:
> Hi,
> 
> On Sat, 11 Feb 2023, Volker Wysk wrote:
> 
> > I suggest to add a test to the io module, for an error being zero. Meaning
> > no error / success. This could be a constant, say "error_success", or a
> > predicate "error_is_success/1".
> 
> We can add the predicate "system_error_is_success/1" which will succeed
> when the value matches the success condition for the system_error/0 type
> (i.e. zero for errno or Windows errors and null for the Java or C#
> backends).

That's what I have in mind.

Volker
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