Allen Wirfs-Brock wrote: > Michael Haufe [mailto:[EMAIL PROTECTED] said: >>> Although I'd prefer to control Deletable separately from Fixed, > > Using a single state to control deletability, attribute mutability, and > property transformation/replacement is a compromise. There may be some > situations where somebody would really like to control these separately > but it is probably a pretty limited use case.
If you can set attribute mutability, then you can set the Delete attribute. If you can set the Delete attribute, then you can delete the property (and its current attributes). If you can delete the property, then you can recreate it with different attributes. So, there is neither a security nor an expressiveness argument for making any distinction between these rights. An argument for separating them would have to be based on convenience (but it seems less convenient, not more), or on preventing inadvertent, non-malicious changes, or possibly on efficiency (but these operations are probably not common enough for that to be significant). -- David-Sarah Hopwood _______________________________________________ Es-discuss mailing list [email protected] https://mail.mozilla.org/listinfo/es-discuss
