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Bill Allombert on Sun, 10 Dec 2023 12:12:41 +0100
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- To: pari-dev@pari.math.u-bordeaux.fr
- Subject: Re: The GP command “?”
- From: Bill Allombert <Bill.Allombert@math.u-bordeaux.fr>
- Date: Sun, 10 Dec 2023 12:12:36 +0100
- Delivery-date: Sun, 10 Dec 2023 12:12:41 +0100
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On Sat, Dec 09, 2023 at 07:49:50PM -0800, Ilya Zakharevich wrote:
> Are people ACTUALLY using “the sections” in the results of the GP command
> ?
> ? Myself, I use only “the tail” of its output. I do not ever recall
> finding what ?1 outputs useful in the slightest…
The start of the list is more for beginner, the end more for advanced users.
> (However, the output of ?19, ?20, ?21 is quite useful (although these is
> NOT LISTED in the output of
> ?
?19, ?20, ?21 list functions that are private to the GP interpreter and cannot
be called normally.
For example,
? _factor_Aurifeuille(5,5)
*** syntax error, unexpected invalid token, expecting end of file: _factor_Aurifeuille(5,5)
? _*_(5,5)
*** syntax error, unexpected invalid token, expecting end of file: _*_(5,5)
Though it is possible to call them using alias:
? alias("mul","_*_")
? mul(5,5)
%4 = 25
? fold(mul,[1..100])==100!
%5 = 1
Cheers,
Bill.