Re: [racket-dev] [racket] match and debug in Advanced Student

2011-11-09 Thread Matthias Felleisen

Yes, and I move very deliberately -- Matthias



On Nov 9, 2011, at 9:01 AM, Robby Findler wrote:

> I believe Matthias is supposed to be the one who holds the keys to the
> design of the teaching languages (but teachpacks can always be used to
> add this stuff, if you have the time).
> 
> On Wed, Nov 9, 2011 at 7:47 AM, Prabhakar Ragde  wrote:
>> On 11/8/11 11:21 PM, Jay McCarthy wrote:
>>> 
>>>  I'm not sure I'm the best person to debug this
>>> (despite otherwise being responsible for match in ASL.)
>> 
>> Then are you the person I lobby to get match into ISL+? --PR
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Re: [racket-dev] [racket] match and debug in Advanced Student

2011-11-09 Thread Robby Findler
I believe Matthias is supposed to be the one who holds the keys to the
design of the teaching languages (but teachpacks can always be used to
add this stuff, if you have the time).

On Wed, Nov 9, 2011 at 7:47 AM, Prabhakar Ragde  wrote:
> On 11/8/11 11:21 PM, Jay McCarthy wrote:
>>
>>  I'm not sure I'm the best person to debug this
>> (despite otherwise being responsible for match in ASL.)
>
> Then are you the person I lobby to get match into ISL+? --PR
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Re: [racket-dev] [racket] match and debug in Advanced Student

2011-11-09 Thread Prabhakar Ragde

On 11/8/11 11:21 PM, Jay McCarthy wrote:

 I'm not sure I'm the best person to debug this
(despite otherwise being responsible for match in ASL.)


Then are you the person I lobby to get match into ISL+? --PR
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Re: [racket-dev] [racket] match and debug in Advanced Student

2011-11-08 Thread Jay McCarthy
I have no idea what the Debug button does... I call it the "Crash
DrRacket" button, because that's what it did in the early 2000s when I
started with Racket. I'm not sure I'm the best person to debug this
(despite otherwise being responsible for match in ASL.) Anyone else
have ideas what this could mean?

Jay

On Tue, Nov 8, 2011 at 9:17 PM, Prabhakar Ragde  wrote:
> I never use the Debug button, but I let my students start using Advanced
> Student today, and of course they tried it out.
>
> The following program induces a strange error when the Debug button is
> pressed.
>
> (match 3
>  [`(,x) 3]
>  [x 3])
>
> The error is:
> internal error: skipped binding is used
>
> after which the program hangs, though it can be stopped with the Stop
> button. --PR
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-- 
Jay McCarthy 
Assistant Professor / Brigham Young University
http://faculty.cs.byu.edu/~jay

"The glory of God is Intelligence" - D&C 93

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