Brendan:
> I'm abusing Object as ES5 does, but harder, to avoid polluting the global
> object. I'm supposing Object.implementation could be useful for other
> properties than the supports method. This reads well enough, although its a
> bit long-winded altogether (but individual names are short enough).
> Comments?
Have i got the wrong end of the stick on this...
With ES6 i thought modules would provide some namespace functionality. eg
import meta // or whatever the syntax is
meta.supports("yield")
And a home for any ast functionality:
import ast
let x = ast.parse("3 + 3")
It's interesting that Lua puts its yield/coroutine functionality in a module:
coroutine.yield()
It's function format but at least it's not necessary to worry about
the global namespace (with modules).
On Mon, May 18, 2009 at 8:13 PM, Brendan Eich <bren...@mozilla.com> wrote:
> On May 18, 2009, at 11:53 AM, Neil Mix wrote:
>
>>> But for this to be true, we would need to use the direct-eval detection
>>> hack I mentioned previously.
>>
>> On the plus side, this would allow for feature detection of generator
>> support, right? (Is there any other way to detect generator support?)
>
> In JS1.7 you could object-detect:
>
> if (this.Iterator) ...
>
> or similarly.
>
> But I'm in the midst of writing up strawman:iterators proposal that doesn't
> add Iterator to the global object (nor any __iterator__ getter, no double
> underscores).
>
> One generalized idea for object detection of keywords that could be used as
> if they named functions in code that would be work in old browsers:
>
> if (Object.implementation && Object.implementation.supports('yield'))) {
> ...
> function gen() { ... yield(E); .... }
> ...
> } else {
> ... do something else ...
> }
>
> I'm abusing Object as ES5 does, but harder, to avoid polluting the global
> object. I'm supposing Object.implementation could be useful for other
> properties than the supports method. This reads well enough, although its a
> bit long-winded altogether (but individual names are short enough).
> Comments?
>
> /be
> _______________________________________________
> es-discuss mailing list
> es-discuss@mozilla.org
> https://mail.mozilla.org/listinfo/es-discuss
>
_______________________________________________
es-discuss mailing list
es-discuss@mozilla.org
https://mail.mozilla.org/listinfo/es-discuss
