Re: [Vala] Signal connect syntax

[Thijs Vermeir <thijsvermeir gmail com>]

On Wed, Apr 15, 2009 at 4:22 PM, pancake <pancake youterm com> wrote:
> lambdas can be used with .connect() ?

Just place the full lamba expression in the brackets.

    var button = new Button.with_label ("Click me!");
    button.clicked += (source) => {
        source.label = "Thank you";
    };

becomes:

    var button = new Button.with_label ("Click me!");
    button.clicked.connect ((source) => {
      source.label = "Thank you";
    });

Gr,
Thijs

> is there any disconnect_all() or so?
>
> Jürg Billeter wrote:
> > The syntax for connecting and disconnecting signal handlers using += and
> > -= has been inherited from the C# syntax. As described in bug 566847
> > [1], using these operators does not seem appropriate for signals.
> > Therefore, the syntax has now been deprecated by
> >
> >    foo.clicked.connect (handler);
> >    foo.clicked.disconnect (handler);
> >
> > The old syntax still works and will continue to be supported for the
> > foreseeable future to not break existing code. A future compiler version
> > might print a warning when not using --enable-deprecated.
> >
> > Jürg
> >
> > [1] http://bugzilla.gnome.org/show_bug.cgi?id=566847
> >
> > _______________________________________________
> > Vala-list mailing list
> > Vala-list gnome org
> > http://mail.gnome.org/mailman/listinfo/vala-list
>
> _______________________________________________
> Vala-list mailing list
> Vala-list gnome org
> http://mail.gnome.org/mailman/listinfo/vala-list