Some Typed Objects Confusion

David Herman dherman at mozilla.com
Wed Aug 21 12:02:08 PDT 2013


Any, String and Object should still be uppercase. The naming convention is: value types lowercase, reference types uppercase.

Dave

On Aug 21, 2013, at 4:21 AM, Dmitry Lomov <dslomov at chromium.org> wrote:

> string, boolean, object and any are all lowercase (we should fix the wiki)
> 
> FWIW, I am already working on a new version of polyfill. It is fully ES5.
> Here is a pull request: https://github.com/dherman/structs.js/pull/12 - I'll merge it soon, and work more to cover everything in the proposal.
> 
> Thanks,
> Dmitry
> 
> 
> 
> On Wed, Aug 21, 2013 at 3:21 AM, Andrea Giammarchi <andrea.giammarchi at gmail.com> wrote:
> sorry, point 3 was actually the question about point 2
> 
> 
> On Tue, Aug 20, 2013 at 6:20 PM, Andrea Giammarchi <andrea.giammarchi at gmail.com> wrote:
> Uhm, just a couple of extra question about that page if/when you have time:
> 	• string and boolean are mentioned, but nowhere in your `struct.js` prolyfill code. Will string and boolean be accepted?
> 	• `Object` and `Any` are mentioned, but exported as object and any in your `struct.js` prolyfill example. W
> 	• Which is the right way?
> The reason I am asking is to be able to create code that does absolutely nothing (for performance reason) but will look like the real thing so I can start experimenting with static structures and possibly a develop VS production version of an ES3 to ES5 compatible polyfill since I believe your code won't run anywhere except in SpiderMonkey (which is OK but it's not suitable for a lightweight migration to "structure like" logic)
> 
> Thanks.
> 
> 
> On Tue, Aug 20, 2013 at 4:55 PM, Andrea Giammarchi <andrea.giammarchi at gmail.com> wrote:
> Awesome, thanks!
> 
> 
> On Tue, Aug 20, 2013 at 4:12 PM, David Herman <dherman at mozilla.com> wrote:
> On Aug 20, 2013, at 1:31 PM, Andrea Giammarchi <andrea.giammarchi at gmail.com> wrote:
> 
> > [In this page](http://wiki.ecmascript.org/doku.php?id=harmony:typed_objects), and in the latest meeting note too, I can read both uint8 and Uint8, as example.
> 
> Bug. Fixed, thanks.
> 
> > **The Question**
> > How is `new StructType({x:Uint32, y:Uint32})` supposes to understand the type? `instanceof Uint32` or `typeof v === "uint32"` or ... both in case of `boolean` and `string` ?
> 
> Neither. It tells you that the x and y fields have typeof 'number' and that their values are constrained to be integers in the range [0, 2^32).
> 
> > A bonus question would be: does anybody know when this stuff is planned to go out? Not a single beta/alpha channel is exposing anything at all so far.
> 
> Nikhil Marathe and Niko Matsakis are actively working on the implementation for SpiderMonkey:
> 
>     https://bugzilla.mozilla.org/show_bug.cgi?id=578700
> 
> Dmitriy Lomov is actively working on updating the prollyfill to match the current API:
> 
>     https://github.com/dherman/structs.js
>     https://github.com/dherman/structs.js/pull/12
> 
> Not sure if anyone on the V8 team (which includes Dmitriy) has started implementation but I believe they're interested. Right now Dmitriy is focused on the prollyfill and spec.
> 
> Dave
> 
> 
> 
> 
> 
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