Symbol vs. String ???
Dave Seaman
Alexander Serebrenik <ali...@pita.cs.huji.ac.il> wrote:
>The problem is as follows - i've the variable representing string,
>f.e. (defvar x "xxx")
>Now i want to translate x to something representing `|"xxx"| .
Do you really mean you want to produce a symbol whose print name is
|"xxx"|, or are you only concerned with printing the string, complete
with quotes, but without producing an interned symbol?
>How can i do it ? (i'm working with currently existing
> module which combines structures and afterwards prints them with
>help of PRINC and the only way i found to print the string storing
>it as a STRING with the help of princ is to write
> (princ `|"xxx"|)
>The problem is that the string may be variable ...
You should probably begin by exploring the difference between prin1 and
princ, since I suspect that will solve your problem. The difference is
that princ prints a string without any surrounding quotes, while prin1
includes the quotes. In particular, (prin1 x) in your example will
produce the same output as (princ '|"xxx"|).
If that is not what you are looking for, perhaps you should try
something along the lines of the following:
>(defvar y (format nil "|~s|" x))
Y
>y
"|\"xxx\"|"
>(read-from-string y)
|"xxx"|
7
>
The value of y is a string, but the value you get from (read-from-string y)
is actually a symbol whose print name is as you indicated.
Dave Seaman
Alexander Serebrenik
I've a small problem - may be some of you already met it and know how
it may be solved ?
The problem is as follows - i've the variable representing string,
f.e. (defvar x "xxx")
Now i want to translate x to something representing `|"xxx"| .
How can i do it ? (i'm working with currently existing
module which combines structures and afterwards prints them with
help of PRINC and the only way i found to print the string storing
it as a STRING with the help of princ is to write
(princ `|"xxx"|)
The problem is that the string may be variable ...
Thanks, sincerely ,
Alexander
Erik Naggum
| [incredibly painful "solution" deleted to protect the children]
use `print' instead of `princ'.
#<Erik 3018021449>
--
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