Re: Figuring out easier readonly interfaces

On Thu, Oct 3, 2013 at 9:56 AM, Mark S. Miller <erights@google.com> wrote:

> But a DOMRect is mutable by script, and so is not an LSP subtype of
> DOMRectReadOnly.
>

Is too!

-- DOMRectReadOnly: an interface exposing read-only accessors to the
> current state of a DOMRect. Nothing is said about whether the object is
> mutable or not.
>

"ReadOnly" only means you can't modify the object through the methods of
that interface. It says nothing about the mutability or otherwise of the
object. A DOMRect satisfies all the invariants of a DOMRectReadOnly and is
therefore LSP substitutable.

Perhaps this base type need a better name. Suggestions welcome.

Rob
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