no ideas,
I have 1.3.1. on a MacBook
Am 27.01.18 um 11:40 schrieb 'Nasser M. Abbasi' via FriCAS - computer
algebra system:
>
>
> On Saturday, January 27, 2018 at 4:13:23 AM UTC-6, jg wrote:
>
> e.g.
>
> q : String := quote()$CHAR
>
> write!(f2, q)
>
>
>
>
> Thanks. But it is not working for me. I get error
>
> q : String := quote()$CHAR
> f1: TextFile := open("/media/data/tmp/foo.txt", "output")
> write!(f1,q)
>
> >> System error:
>
> UNIX error 71 (EPROTO): Protocol error
>
> I am using
>
> >fricas
> viewman not present, disabling graphics
> /bin/sh: 1: exec:
> /home/me/data/fricas/fricas-1.3.2/target/x86_64-linux-gnu/bin/hypertex:
> not found
> Checking for foreign routines
> AXIOM="/home/me/data/fricas/fricas-1.3.2/target/x86_64-linux-gnu"
> spad-lib="/home/me/data/fricas/fricas-1.3.2/target/x86_64-linux-gnu/lib/libspad.so"
> foreign routines found
> openServer result 0
> FriCAS Computer Algebra System
> Version: FriCAS 1.3.2
> Timestamp: Mon Jan 22 22:59:20 CST 2018
>
>
> Linux mint.
>
>
>
> Am 27.01.18 um 10:51 schrieb 'Nasser M. Abbasi' via FriCAS -
> computer algebra system:
>> How does one write a single " to a text file in Fricas?
>>
>> I need to write a string to a text file, but also keep the " "
>> around the string and
>> not have those removed when the string is written. This is
>> because later when
>> I read the file using another program, I need to have those ""
>> there so I can
>> read it as string.
>>
>> Here is an example
>>
>> -------------------------
>> f2: TextFile := open("/tmp/foo.txt", "output")
>> ii:=integrate(1/(a^2+b^2*x^2), x)
>> -------------------------
>>
>> Now I want to write variable ii to the file as string. We see it
>> is string when
>> doing this
>>
>> unparse(ii::InputForm)
>> (45) "atan((b*x)/a)/(a*b)"
>>
>> Type: String
>>
>> So I did this
>>
>> ----------------------
>> (46) -> writeLine!(f2, unparse(ii::InputForm) )
>> close!(f2)
>> ----------------------
>>
>> But when I look at the file, the string quotes that show up on
>> the screen " "
>> are missing at the start and at the end in the file
>>
>> atan((b*x)/a)/(a*b)
>>
>> So the way I do this in Maple for example, is to add explicit "
>> at end and
>> at start. But I do not know how to tell fricas to write a single
>> ". I do not
>> know how to escape the "
>>
>> I tried
>>
>> writeLine!(f2, concat("\"", unparse(ii::InputForm), "\"") )
>>
>> And tried
>>
>> write!(f2, "\"")
>> write!(f2, unparse(ii::InputForm))
>> write!(f2, "\"")
>> writeLine!(f2)
>>
>> But the problem is, I do not know how to write a single " to the
>> file.
>>
>> Thanks
>> --Nasser
>>
>>
>> --
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>
> --
> Mit freundlichen Grüßen
>
> Johannes Grabmeier
>
> Fraktionsvorsitzender
> FREIE WÄHLER, Stadtrat Deggendorf
>
> Prof. Dr. Johannes Grabmeier
> Köckstraße 1, D-94469 Deggendorf
> Tel. +49-(0)-991-2979584, Tel. +49-(0)-151-681-70756
> Fax: +49-(0)-322-241-92688
>
> --
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> For more options, visit https://groups.google.com/d/optout.
--
Mit freundlichen Grüßen
Johannes Grabmeier
Fraktionsvorsitzender
FREIE WÄHLER, Stadtrat Deggendorf
Prof. Dr. Johannes Grabmeier
Köckstraße 1, D-94469 Deggendorf
Tel. +49-(0)-991-2979584, Tel. +49-(0)-151-681-70756
Fax: +49-(0)-322-241-92688
--
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