Re: [racket-users] Fwd: Racket Con

[Vincent St-Amour]

No mugs this year; another surprise instead. ;)

Vincent



On Thu, 05 Oct 2017 14:18:58 -0500,
'John Clements' via users-redirect wrote:
> 
> Forwarded without comment… :)
> 
>  Begin forwarded message:
> 
>  From: Jasmine Harihar Patel 
>  Subject: Racket Con
>  Date: October 5, 2017 at 11:54:02 AM PDT
>  To: "John B. Clements" 
> 
>  Dear Professor Clements,
> 
>  My name is Jasmine and I am a 2nd year CSC student. I heard that you were 
> going to Racket Con tomorrow and was wondering if there is any way I could 
> get one of those cool heat sensitive mugs (only if it is no trouble). 
> 
>  Thanks,
> 
>  Jasmine Patel
> 
> -- 
> You received this message because you are subscribed to the Google Groups 
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Re: [racket-users] namespace-anchor->namespace and eval

[Laurent]

Ah so that was actually a bug then :) Thanks for fix!

On Thu, Oct 5, 2017 at 5:47 PM, Matthew Flatt  wrote:

> I've pushed a repair for this problem. It's a bug in the current
> expander that could be triggered by a just-right combination of
> `syntax-local-lift-expression` (as used by `new`) and `expand` (as used
> by errortrace, which is used by DrRacket).
>
> At Sun, 1 Oct 2017 16:05:16 +0100, Laurent wrote:
> > Hi,
> >
> > Does anyone know a good explanation as to why the following code works
> > depending on whether the apparently-useless line is commented out?
> >
> > #lang racket
> >
> > #;(new object%) ; uncommenting this raises an error
> >
> > (define-namespace-anchor nsa)
> > (define ns (namespace-anchor->namespace nsa))
> > (eval '(new object%) ns)
> >
> > The error is:
> > lifted.0.0: undefined;
> >  cannot reference an identifier before its definition
> > with syntax location on the eval line
> >
> > Thanks!
> >
> > --
> > You received this message because you are subscribed to the Google Groups
> > "Racket Users" group.
> > To unsubscribe from this group and stop receiving emails from it, send an
> > email to racket-users+unsubscr...@googlegroups.com.
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>
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Re: [racket-users] Fwd: Racket Con

[Ben Greenman]

I have 1 mug (unused) that still needs a home.

On Thu, Oct 5, 2017 at 3:18 PM, 'John Clements' via users-redirect <
us...@plt-scheme.org> wrote:

> Forwarded without comment… :)
>
> Begin forwarded message:
>
> *From: *Jasmine Harihar Patel 
> *Subject: **Racket Con*
> *Date: *October 5, 2017 at 11:54:02 AM PDT
> *To: *"John B. Clements" 
>
> Dear Professor Clements,
>
>
> My name is Jasmine and I am a 2nd year CSC student. I heard that you were
> going to Racket Con tomorrow and was wondering if there is any way I could
> get one of those cool heat sensitive mugs (only if it is no trouble).
>
>
> Thanks,
>
> Jasmine Patel
>
>
> --
> You received this message because you are subscribed to the Google Groups
> "Racket Users" group.
> To unsubscribe from this group and stop receiving emails from it, send an
> email to racket-users+unsubscr...@googlegroups.com.
> For more options, visit https://groups.google.com/d/optout.
>

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[racket-users] Fwd: Racket Con

['John Clements' via users-redirect]

Forwarded without comment… :)

> Begin forwarded message:
> 
> From: Jasmine Harihar Patel 
> Subject: Racket Con
> Date: October 5, 2017 at 11:54:02 AM PDT
> To: "John B. Clements" 
> 
> Dear Professor Clements,
> 
> My name is Jasmine and I am a 2nd year CSC student. I heard that you were 
> going to Racket Con tomorrow and was wondering if there is any way I could 
> get one of those cool heat sensitive mugs (only if it is no trouble). 
> 
> Thanks,
> Jasmine Patel

-- 
You received this message because you are subscribed to the Google Groups 
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Re: [racket-users] namespace-anchor->namespace and eval

[Matthew Flatt]

I've pushed a repair for this problem. It's a bug in the current
expander that could be triggered by a just-right combination of
`syntax-local-lift-expression` (as used by `new`) and `expand` (as used
by errortrace, which is used by DrRacket).

At Sun, 1 Oct 2017 16:05:16 +0100, Laurent wrote:
> Hi,
> 
> Does anyone know a good explanation as to why the following code works
> depending on whether the apparently-useless line is commented out?
> 
> #lang racket
> 
> #;(new object%) ; uncommenting this raises an error
> 
> (define-namespace-anchor nsa)
> (define ns (namespace-anchor->namespace nsa))
> (eval '(new object%) ns)
> 
> The error is:
> lifted.0.0: undefined;
>  cannot reference an identifier before its definition
> with syntax location on the eval line
> 
> Thanks!
> 
> -- 
> You received this message because you are subscribed to the Google Groups 
> "Racket Users" group.
> To unsubscribe from this group and stop receiving emails from it, send an 
> email to racket-users+unsubscr...@googlegroups.com.
> For more options, visit https://groups.google.com/d/optout.

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