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From Jeff Dyer <jeffd...@acm.org>
Subject Re: Odd undefined property via reference to static type compilation error
Date Mon, 09 Jul 2012 22:14:18 GMT
Yes, that is because strict mode punts on index expressions, because it
doesn't in general know the string value of the index. That'll be
workaround #3.

Jeff

On Mon, Jul 9, 2012 at 2:53 PM, Om <bigosmallm@gmail.com> wrote:

> On Mon, Jul 9, 2012 at 2:40 PM, Jeff Dyer <jeffdyer@acm.org> wrote:
>
> > This is probably a compiler bug, if not a language bug. Instance
> > initializers were ill defined in AS3. In the draft ES4 spec we pinned
> them
> > down to be scoped to the class static scope, so references to 'this' or
> > instance variables would not be resolved in instance initializers. That
> > said, AS3 did allow them with some what vague initialization semantics.
> The
> > bug here is that 'this' is not allowed in instance initializers in strict
> > mode.
> >
> > There are two workarounds: 1/erase the 'this.' prefix; 2/turn off strict
> > mode.
> >
> > Jeff
> >
> >
> >
> Thanks for explanation, Jeff.  Interestingly, this["minHeight"] seems to
> work fine in the instance initializer, even in strict mode.
>
>
> >
> > On Mon, Jul 9, 2012 at 11:34 AM, Ryan Frishberg <frishy@gmail.com>
> wrote:
> >
> > > In ActionScript, it looks like this doesn't work:
> > >
> > > class A
> > > {
> > >
> > > public var minHeight:Number = 9;
> > >
> > > protected var minHeight2:Number = this.minHeight;
> > >
> > > }
> > >
> > > Someone who knows ActionScript in more detail can probably explain why
> > the
> > > compilter/runtime can't figure out what "this" should refer to when
> > > initializing class properties.
> > >
> > > -Ryan
> > >
> > > On Wed, Jul 4, 2012 at 5:53 PM, Justin Mclean <
> justin@classsoftware.com
> > > >wrote:
> > >
> > > > Hi,
> > > >
> > > > > BTW, is this an issue in Adobe Flex 4.6 as well?
> > > > Yep issue with both 4.6 and 4.8 and couldn't find an existing JIRA
> > report
> > > > for it.
> > > >
> > > > Justin
> > >
> >
>

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