Re: [Vala] help with java to vala

[bsquared <bwcode4u gmail com>]

On 10/25/2012 09:39 AM, marcin saepia net
wrote:
> Have you tried
>
>  static construct {
>       ...
>     }
>
> ?
>
> (see https://live.gnome.org/Vala/Tutorial)
>
> m.
>
> 2012/10/23 bsquared <bwcode4u gmail com>:
> > Hello,
> >
> > Is it possible to initialize a static const HashSet?
> > Similar to this from Java?
> >
> > 8< ------------------------------------------------
> >     private static final Set<String> STATIC_SET;
> >
> >     static {
> >         STATIC_SET = new HashSet<String>();
> >         STATIC_SET.add("Data One");
> >         STATIC_SET.add("Data Two");
> >     }
> >   ------------------------------------------------- >8
> >
> > Thank you.
> > --
> > Regards,
> > Brian
> >
> > _______________________________________________
> > vala-list mailing list
> > vala-list gnome org
> > https://mail.gnome.org/mailman/listinfo/vala-list

Thanks for your response.  I was curious if the static constructor was
the right solution.

I attempted a simple test using this:
8< ------------------------------------------------
        private static const Set<string> STATIC_SET;
        static construct {
                STATIC_SET = new HashSet<string> ();
                STATIC_SET.add ("Hello");
                STATIC_SET.add ("World");
        }
------------------------------------------------ >8

with this result:
8< ------------------------------------------------
valac --pkg gee-1.0 hello_set.vala
hello_set.vala:5.4-5.47: error: `Gee.Set<string>' not supported as type
for constants
        private static const Set<string> STATIC_SET;
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
hello_set.vala:8.3-8.16: error: The name `add' does not exist in the
context of `HelloTest.STATIC_SET'
                STATIC_SET.add("Hello");
                ^^^^^^^^^^^^^^
hello_set.vala:9.3-9.16: error: The name `add' does not exist in the
context of `HelloTest.STATIC_SET'
                STATIC_SET.add("World");
                ^^^^^^^^^^^^^^
Compilation failed: 3 error(s), 0 warning(s)
------------------------------------------------ >8


To my untrained eye this appears to indicate that I cannot use these as
constants.  If I drop 'const' from the declaration it compiles and runs
correctly.

Any suggestions?

Thank you.

-- 
Regards,
Brian