klaus, > It is better to bind a variable by value because there is no garanty that > your bound variable is still valid if it would be bound by reference.
I disagree with this statement: sigc++ provides a guarantee for that: if your variable is bound to a slot by ref, _and_ it inherits from sigc::trackable, then if the ref becomes invalid, the slot will be automatically invalidated. The conclusion: it is efficient to bind vars by ref, but to guarantee that it is safe, your vars should inherit from sigc::trackable. -- hpreg _______________________________________________ libsigc-list mailing list libsigc-list@gnome.org http://mail.gnome.org/mailman/listinfo/libsigc-list
