Works here:
Release 16.04.3 LTS (Xenial Xerus) 64-bit
AMD A4-3400 APU with Radeon(tm) HD Graphics × 2
compile.log has 'sbcl'
--
Remember the file doesn't actually write until you close/flush it or
fill the internal buffer.
Ray
FriCAS Computer Algebra System
Version: FriCAS 1.3.2
Timestamp: Tue Apr 25 16:33:05 EDT 2017
-----------------------------------------------------------------------------
Issue )copyright to view copyright notices.
Issue )summary for a summary of useful system commands.
Issue )quit to leave FriCAS and return to shell.
-----------------------------------------------------------------------------
(1) -> q : String := quote()$CHAR
(1) """
Type: String
(2) -> f1: TextFile := open("./tmp/foo.txt", "output")
(2) "./tmp/foo.txt"
Type: TextFile
(3) -> write!(f1,q);write!(f1,"--Test--");write!(f1,q);
Type: String
(4) -> close! f1
(4) "./tmp/foo.txt"
Type: TextFile
(5) -> )quit
rrogers@Mate-desk:~$ less tmp/foo.txt
"--Test--"
tmp/foo.txt (END)
-----------------------------------------------------------------
On 01/27/2018 05:45 AM, Prof. Dr. Johannes Grabmeier FW wrote:
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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--
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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Groups "FriCAS - computer algebra system" group.
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<mailto:[email protected]>.
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