Re: [m-users.] Error handling in io module
Julien Fischer <[email protected]>
| Newsgroups | gmane.comp.lang.mercury.general |
|---|---|
| Message-ID | <[email protected]> |
On Sun, 12 Feb 2023, Volker Wysk wrote: > 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. The above predicate is present as of rotd-2023-02-13. Julien. _______________________________________________ users mailing list [email protected] https://lists.mercurylang.org/listinfo/users