[plt-scheme] Delay/force printing behavior in advanced student language

The non-friendly way involves a shock from the keyboard, your printer
exploding, and several nasty emails being sent to your colleagues and
immediate supervisor.

Doesn't that make this error message seem so much better? :-)

Todd

On Sun, Nov 1, 2009 at 8:09 PM, Matthias Felleisen <matthias at ccs.neu.edu> wrote:
>
> This is PLT's friendliest way (as far as I know) of telling you that you
> changed something in the code base w/o re-running setup-plt. I know I know
> ... but I have no clue why this error message is like it is.
>
>  $ setup-plt -l lang
>
>
> On Nov 1, 2009, at 5:10 PM, Mark Engelberg wrote:
>
>> It was pretty obvious how to change it, but now when I run advanced
>> student language, I get:
>> require: namespace mismatch; reference (phase 0) to a module
>> "C:\Program Files\PLT\collects\scheme\private\kw.ss" that is not
>> available (phase level 0)
>>
>> When I change the file back to the way it was, I get the same problem.
>> So I'm thinking somehow I corrupted the various dependencies or
>> compilation process.
>>
>> How do I rebuild everything to incorporate the changed file?
>>
>> Thanks,
>>
>> Mark
>>
>> On Sun, Nov 1, 2009 at 1:38 PM, Robby Findler
>> <robby at eecs.northwestern.edu> wrote:
>>>
>>> I don't think that there is any particular reason. The relevant
>>> library is pconvert.ss, if you wanted to sort out how to change it.
>>>
>>> Robby
>>>
>>> On Sun, Nov 1, 2009 at 2:58 PM, Mark Engelberg <mark.engelberg at gmail.com>
>>> wrote:
>>>>
>>>> Compare the printing behavior of delays in student languages versus
>>>> the module language by executing the following code:
>>>>
>>>> (define a (delay 2))
>>>> (force a)
>>>> a
>>>>
>>>> In the module language:
>>>> #<promise!2>
>>>>
>>>> In the advanced student language:
>>>> (delay ...)
>>>>
>>>> Note that the way it prints in module language gives you information
>>>> about the contents of the promise once it has been forced.
>>>> It seems like the advanced student language should give at least as
>>>> good information as the module language.
>>>> Therefore, I would like to see it print as:
>>>> (delay ...) before it is forced and
>>>> (delay 2) once it has been forced.
>>>>
>>>> Any particular reason it doesn't do this?
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>>>>
>>>
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