Hi Maciej, Thanks for your feedback! Two additional comments...
> "Any": The spec explains vaguely that the "any" type is not identical > to the union (null, undefined, Object). How is it different? Is the > difference observable to ES4 programs or is it purely a matter > internal to the spec (in which case the difference is not relevant)? The essential difference is in strict mode, where a variable of type "Any" can be passed to a context expecting a more specific type (say int), and "Any" gets implicitly downcast. In contrast, passing "(null, undefined, Object)" or even "Object" to somewhere expecting an int would be a verify-time error. > "switch type" statement: I guess this beats switching on typeof, but > is it really significantly better than a series of "if" statements > using the "is" operator? Well, you'd need a bunch of cast operations too, at least in strict mode, and it gets a little ugly/verbose. - Cormac _______________________________________________ Es4-discuss mailing list [email protected] https://mail.mozilla.org/listinfo/es4-discuss
