Le lundi 16 janvier 2017 à 17:27 -0200, Alexandre Oliveira a écrit :
I tried this in my method, even replacing 'string' for 'string?', but I still get the same message in my terminal. What is your suggestion to suppress these messages?
The following snippet works perfectly fine:
bool is_null_or_empty (string? a) {
return a == null || a.length == 0;
}
assert (is_null_or_empty (null));
assert (is_null_or_empty (""));
assert (!is_null_or_empty (" "));
On 16/01/2017 17:23, Guillaume Poirier-Morency wrote:You should test for nullity before addressing the string. return str == null || str.length == 0; If you expect the string to be potentially 'null', use the 'string?' type instead. 2017-01-16 14:09 GMT-05:00 Alexandre Oliveira <xinayder airmail cc <mailto:xinayder airmail cc>>: Hello! I've just heard about Vala and I've been messing around with it these past days. However, I came across a problem. I need to check if some strings aren't empty, and I realized there's no method in Vala that's equivalent to C#'s `string.IsNullOrEmpty(string)`. I tried setting up a static method to check if the given string is empty: ``` static bool is_empty(string str) { return str[0] == '\0' || str == null; } ``` However, running my code, I get the following message repeatedly in my terminal: ** (main.exe:2288): CRITICAL **: is_empty: assertion 'str != NULL' failed What am I doing wrong? Thanks! -- Alexandre Oliveira 167F D82F 514A E8D1 2E9E C62D 1B63 9D4A 7E9D DA9D _______________________________________________ vala-list mailing list vala-list gnome org <mailto:vala-list gnome org> https://mail.gnome.org/mailman/listinfo/vala-list <https://mail.gnome.org/mailman/listinfo/vala-list> -- Guillaume Poirier-Morency <guillaumepoiriermorency gmail com <mailto:guillaumepoiriermorency gmail com>> Étudiant au baccalauréat en Informatique à l'Université de Montréal Développeur d'application web *Mon blog:* arteymix.github.io <https://arteymix.github.io> *Mon projet de coopérative:* pittoresque.github.io <https://pittoresque.github.io> *Clé PGP:* B1AD6EA5 <https://pgp.mit.edu/pks/lookup?op=vindex&search=0x1CCFC3A2B1AD6EA5
-- Guillaume Poirier-Morency <guillaumepoiriermorency gmail com> Étudiant au baccalauréat en Informatique à l'Université de Montréal Chercheur boursier à l'IRIC Mon blog: https://arteymix.github.io/ Clé PGP: B1AD6EA5
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