String + 1

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String + 1

Postby Ehsan » Sat Jul 14, 2012 2:16 am

Hi everyone . i need to write a function in lisp that receive string and then add 1 to each characters. for example "2a6c12" and then return "3b7d23".

i write this function

(defun my-list(f)
(loop for x across f collect(code-char(+ 1 (char-code x)))))

but my output like this (#\3 #\b #\7 #\d #\2 #\3) . how can i change this output to normal form ("3b7d23")


tnx a lot
Ehsan
 
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Re: String + 1

Postby Goheeca » Sat Jul 14, 2012 2:52 am

Try this:
Code: Select all
(concatenate 'string '(#\a #\b))

or ugglier:
Code: Select all
(coerce '(#\a #\b) 'string)
cl-2dsyntax is my attempt to create a Python-like reader. My mirror of CLHS (and the dark themed version).
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Goheeca
 
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