[Vala] Static property

[gege2061 <gege2061 redaction-developpez com>]

Hi,

I wan't implement singleton pattern but I have compilation error :

> using GLib;
>
> public class Singleton : Object
> {
>   static Singleton* _instance = null;
>
>   private Singleton ()
>   {
>   }
>
>   public static Singleton* instance
>   {
>     get
>     {
>       if (_instance == null)
>       {
>         _instance = new Singleton ();
>       }
>       return _instance;
>     }
>   }
>
>   public static Singleton* get_instance ()
>   {
>     if (_instance == null)
>     {
>       _instance = new Singleton ();
>     }
>     return _instance;
>   }
>
>   public static int main (string[] args)
>   {
>     Singleton* s = null;
>     s = Singleton.get_instance ();
>     s = Singleton.instance; // line 35
>     return 0;
>   }
> }

And compilation command :

$ valac singleton.vala
/home/gege2061/test/vala/singleton.vala:35.7-35.7: error: Assignment: Invalid callback assignment attempt
Compilation failed: 1 error(s), 0 warning(s)

I don't undestand my error :(

-- 
Nicolas Joseph

Responsable de la rubrique GTK+ de developpez.com

http://nicolasj.developpez.com