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MathGroup Archive 2007

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Re: RE: RE: simple question

  • To: mathgroup at smc.vnet.net
  • Subject: [mg77266] Re: [mg77161] RE: [mg77113] RE: [mg77099] simple question
  • From: DrMajorBob <drmajorbob at bigfoot.com>
  • Date: Wed, 6 Jun 2007 07:04:33 -0400 (EDT)
  • References: <200706031015.GAA03008@smc.vnet.net> <17807603.1180947440083.JavaMail.root@m35> <op.ttd8jwb7qu6oor@monster.ma.dl.cox.net> <200706051035.GAA00766@smc.vnet.net> <20010005.1181048860294.JavaMail.root@m35>
  • Reply-to: drmajorbob at bigfoot.com

Isn't that a powerful argument against converting to traditional form -- 
ever? -- since the same thing happens when the original code is Sin[x], 
which converts to sin(x) and then becomes sin x (multiplication) when  
pasted back into Mathematica?

Bobby

On Tue, 05 Jun 2007 08:06:15 -0500, Andrzej Kozlowski <akoz at mimuw.edu.pl>  
wrote:

> Try the folowing. First enter
>
> Comment[" This is my comment. "]
>
> into na input cell. Now use the Convert To menu in the Cell menu to  
> convert the cell into Traditional Form. Next, copy and paste into some 
> text editor (it could even be another copy of Mathematica running on the  
> same machine) and then copy it again an paste it back into a new cell in  
> (the original) Mathematica. Now evalaute the cell. You will probably now  
> agree that "This is my comment." is preferable.
>
> Andrzej Kozlowski
>
>
> On 5 Jun 2007, at 19:35, Ingolf Dahl wrote:
>
>> Yes, from execution point of view,
>>
>> "This is my comment."
>>
>> works as well as
>>
>> Comment[" This is my comment. "];
>>
>> but comments are meant for human readers of the program, and I think 
>> that my
>> proposal is better for informing the reader that the comment really is a
>> comment and nothing else. It is also easier for a metaprogram to find,
>> delete, print, color or translate all such comments inside a program.
>> Another way is of course to decorate the comment strings in some way, 
>> for
>> instance
>>
>> "(***** This is my comment. *****)" .
>>
>> Matter of taste...
>> About not capitalizing user-defined functions, I think that that is a
>> good
>> rule, if some exceptions are allowed. For instance, package authors  
>> usually
>> seem to capitalize their "user-defined" functions. And if I suggest this
>> natural use of the word "Comment", it is implicitly an appeal to  
>> Wolfram not
>> to use the same word for something else. If many users adopted the  
>> practice,
>> they could even include it as an alternative in the Help.
>>
>> Best regards
>>
>> Ingolf Dahl
>>
>>> -----Original Message-----
>>> From: DrMajorBob [mailto:drmajorbob at bigfoot.com]
>>> Sent: den 4 juni 2007 12:54
>>> To: Ingolf Dahl; mathgroup at smc.vnet.net
>>> Subject: Re: [mg77113] RE: [mg77099] simple question
>>>
>>> I believe "This is my comment." works just as well, without
>>> the comment function. (I never capitalize user-defined functions.)
>>>
>>> Bobby
>>>
>>> On Mon, 04 Jun 2007 02:46:35 -0500, Ingolf Dahl
>>> <ingolf.dahl at telia.com>
>>> wrote:
>>>
>>>> Hi Dimitris,
>>>> I cite from mg64218 (Feb 7, 2006), thread "Notebooks,
>>> packages, cells,
>>>> and literate programming":
>>>>
>>>> "One alternative way to enter inline comments, if you anyway want
>>>> that, is to wrap them up in a ordinary Mathematica function in this
>>>> way:
>>>>
>>>> Comment[" This is my comment. "];
>>>>
>>>> There usually are any number of places in the code where
>>> you could add
>>>> comments in this way. If you have not defined the function Comment,
>>>> the statement will not be evaluated. Such comments are not
>>> removed by
>>>> Shift-Ctrl-N or Shift-Ctrl-I.
>>>> Of course I must here also remind that the button
>>> "CopyAsInputForm" in
>>>> my SetFaceAndFont Palette preserves (* *) comments by
>>> converting them
>>>> into the suggested alternative. (See
>>>> http://web.telia.com/~u31815170/Mathematica/)"
>>>>
>>>> The palette is not updated to version 6 yet, since I just have had
>>>> Mathematica 6 available a few days, but this feature seems to be
>>>> functioning.
>>>>
>>>> Best regards
>>>>
>>>> Ingolf Dahl
>>>>
>>>>> -----Original Message-----
>>>>> From: dimitris [mailto:dimmechan at yahoo.com]
>>>>> Sent: den 3 juni 2007 12:15
>>>>> To: mathgroup at smc.vnet.net
>>>>> Subject: [mg77099] simple question
>>>>>
>>>>> Hi.
>>>>>
>>>>> I have a simple question but I can't find any relevant.
>>>>> Suppose a user-defined function with comments [that is
>>>>> (*...*) structures] added.
>>>>>
>>>>> Let for example
>>>>>
>>>>> \!\(Nint[g_ (*function*) , n_Integer, {x_, a_, b_} (*
>>>>>       the\ variable\ and\ the\ limits\
>>>>>         of\ integration*) , opts___ (*set\ possible\
>>> options\ for\ \
>>>>> NIntegrate*) ] := NIntegrate[Evaluate[g\^Range[n]], {x, a, b},
>>>>> opts]\)
>>>>>
>>>>> The code has been copy/paste in StandardForm.
>>>>> Let me convert it to InputForm. After selecting the cell and press
>>>>> Shift+Ctrl+I, I get
>>>>>
>>>>> In[1]:=
>>>>> Nint[g_, n_Integer, {x_, a_, b_}, opts___] :=
>>>>> NIntegrate[Evaluate[g^Range[n]], {x, a, b}, opts]
>>>>>
>>>>> That is, the comments during the conversion have been lost.
>>>>>
>>>>> Any ideas to "fix" this situation?
>>>>>
>>>>> Dimitris
>>>>>
>>>>>
>>>>>
>>>>
>>>>
>>>>
>>>>
>>>
>>>
>>>
>>> --
>>> DrMajorBob at bigfoot.com
>>
>>
>>
>
>



-- 
DrMajorBob at bigfoot.com


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