Didn't send to list, something is wrong with my reply all. Sorry about that. Stupid mobile gmail. ---------- Forwarded message ---------- From: "joe" <[email protected]> Date: Sep 8, 2015 11:15 AM Subject: Re: Object id, hash, etc? To: "Garrett Smith" <[email protected]> Cc:
I agree with this request. This is the logical complement to valueof, I think. And yes, for most ID use cases this isn't a good fit, but we're not talking about the general case, just the cases where a python style id() function *is* appropriate. Joe On Sep 8, 2015 9:08 AM, "Garrett Smith" <[email protected]> wrote: > On 9/8/15, Michael McGlothlin <[email protected]> wrote: > > Is there a reason not to provide an object id and hash value as other > > languages often do? I find myself defining an identity symbol on objects > > with a value from a simple global counter. It makes it easier to debug > if I > > can just look at a log and see what objects and functions were active. > > > > Likewise a hash value would simplify a lot of comparisons and make it > easier > > to debug. > > > > I especially find the ID useful when working with bound functions as they > > can be difficult to tell apart. I like to change toString() to provide > the > > ID followed by the code (flattened to one line). > > > > > > NFE's are safe to use where IE8 support isn't needed*. > (function aa(){}).name; // "aa" > > As for using Object IDs and Object Pooling, lexically-scoped values > have benefits over global ID generators (as your counter). The values > can be passed in as a parameter to the Factory (useful with Private > Proxy). There other benefits to this pattern regarding memory > management and application design. Contact me if you'd like to learn > more. > > * https://kangax.github.io/nfe/ > -- > Garrett > @xkit > ChordCycles.wordpress.com > garretts.github.io > personx.tumblr.com > _______________________________________________ > es-discuss mailing list > [email protected] > https://mail.mozilla.org/listinfo/es-discuss >
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