On Nov 2, 2011, at November 2, 20119:30 AM, Quildreen Motta wrote: > >> "freeze" does not add anything new to an object. If you don't want to change >> the shape of an object ... don't change the shape of the object. > Again, immutability isn't just about security, but optimisation as well. You > could also look at shared-memory threads, because I think they make a hell of > an argument for "frozen" objects or immutability.
The last time we looked at freezing a few core objects in node.js we found that v8 was actually slower with them frozen and backed them out, which is probably a good thing. I'm very skeptical of the "new language feature for optimization" argument ever since the static typing debate in ES4 and the tracer work Mozilla did shortly after. _______________________________________________ es-discuss mailing list [email protected] https://mail.mozilla.org/listinfo/es-discuss
