Re: [Vala] request to add another example to Projects/Vala/ListExample

[MohanR <mohan43u gmail com>]

##SELECTION_END##HI,
I screwed-up that comment. sorry for that. I tried to upload a new
version of that page, but wiki says I'm not allowed. Please help to
update that page.
int main(string[] args) {
    List<string> list0 = new List<string>();
    List<unowned string> list1 = new List<unowned string>();
    list0.append("helloworld"); /* g_strdup() takes place */
    list1.append("helloworld"); /* no g_strdup() */
    stdout.printf("list0.length=%u, list1.length=%u\n",
                  list0.length(), /* length=1 */
                  list1.length()); /* length=1 */
    list0.remove("helloworld"); /* wont work as expected */
    list1.remove("helloworld"); /* works as expected */
    stdout.printf("list0.length=%u, list1.length=%u\n",
                  list0.length(), /* still length=1 */
                  list1.length()); /* length=0 */
    list0.delete_link(list0.find_custom("helloworld", strcmp));
    stdout.printf("list0.length=%u, list1.length=%u\n",
                  list0.length(), /* length=0 */
                  list1.length()); /* length=0 */
    return 0;
}
Thanks,
Mohan R
On Fri, 2016-03-18 at 20:37 +0100, Luca Bruno wrote:
> Hi,
> thanks a lot for your contribution. The wiki is open, you can
> register and edit it freely! :)
>
> Also pay attention to the comment about "how" and "how". In C, they
> are equivalent because those are const strings and have the same
> address. But with List they get copied. However with
> List they would be equal. It would be better if you
> could reword that comment about pointing to the ownership of the List
> elements
>
> On Fri, Mar 18, 2016 at 8:26 PM, MohanR <mohan43u gmail com> wrote:
> > Hi,
> >
> > I'm a beginner in vala. I would like to add the following example
> > to
> > this wiki link to make other beginners understand important thing
> > about
> > List<string>.
> >
> > https://wiki.gnome.org/Projects/Vala/ListSample
> >
> > int main(string[] args) {
> >     List<string> mylist = new List<string>();
> >     mylist.append("hi");
> >     mylist.append("how");
> >     mylist.append("are");
> >     mylist.append("you");
> >
> >     /* prints length: 4 */
> >     stdout.printf("length: %u\n", mylist.length());
> >
> >     /* following wont work as expected because in
> >      * C universe, "how" and "how" is not equal
> >      */
> >     mylist.remove("how");
> >
> >     /* still prints length: 4 */
> >     stdout.printf("length: %u\n", mylist.length());
> >
> >     /* works because "how" and "how" is equal
> >      * according to strcmp()
> >      */
> >     mylist.remove_link(mylist.find_custom("how", strcmp));
> >
> >     /* prints length: 3 */
> >     stdout.printf("length: %u\n", mylist.length());
> >
> >     return 0;
> > }
> > _______________________________________________
> > vala-list mailing list
> > vala-list gnome org
> > https://mail.gnome.org/mailman/listinfo/vala-list
>
>
> -- 
> NixOS Linux