XPost: comp.lang.scheme

On 2024-09-07, B. Pym <Nobody447095@here-nor-there.org> wrote:

(let ((e-mail-address "PGIUHOGT@VGIHKRR.TKZ"))
(loop with new-string = (make-string (length e-mail-address))
for count from 0 to (1- (length e-mail-address))
for char-code = (char-code (aref e-mail-address count))
for new-char-code =
(if (and (> char-code 64)(< char-code 123))
(+ (mod (+ 13 char-code) 52) 65)
char-code)
do (setf (aref new-string count) (code-char new-char-code))
finally (return new-string)))

Gauche Scheme

(string-map
(^c (let1 n (char->integer c)
(integer->char
(if (< 64 n 123) (+ (modulo (+ 13 n) 52) 65) n))))
"PGIUHOGT@VGIHKRR.TKZ")

TXR Lisp:

(mapcar [iffi chr-isupper (op wrap #\a #\z)] "PGIUHOGT@VGIHKRR.TKZ")

"jacobian@pacbell.net"

The pacbell.net domain is defunct, so no point in concealing.

--
TXR Programming Language: http://nongnu.org/txr
Cygnal: Cygwin Native Application Library: http://kylheku.com/cygnal
Mastodon: @Kazinator@mstdn.ca

--- SoupGate-Win32 v1.05
* Origin: fsxNet Usenet Gateway (21:1/5)

XPost: comp.lang.scheme

(let ((e-mail-address "PGIUHOGT@VGIHKRR.TKZ"))
(loop with new-string = (make-string (length e-mail-address))
for count from 0 to (1- (length e-mail-address))
for char-code = (char-code (aref e-mail-address count))
for new-char-code =
(if (and (> char-code 64)(< char-code 123))
(+ (mod (+ 13 char-code) 52) 65)
char-code)
do (setf (aref new-string count) (code-char new-char-code))
finally (return new-string)))

Gauche Scheme

(string-map
(^c (let1 n (char->integer c)
(integer->char
(if (< 64 n 123) (+ (modulo (+ 13 n) 52) 65) n))))
"PGIUHOGT@VGIHKRR.TKZ")

--- SoupGate-Win32 v1.05
* Origin: fsxNet Usenet Gateway (21:1/5)