Rot-13: Difference between revisions
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(→{{header|Common Lisp}}: The CL standard may be ambiguous, but assuming a modern OS and implementation ASCII is a given.) |
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c)) |
c)) |
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s))</lang> |
s))</lang> |
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====Assuming ASCII Character Set==== |
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Though the standard intentionally doesn't specify encoding, every popular implementation today uses ASCII. |
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<lang lisp>(defun rot13 (string) |
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(map 'string |
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(lambda (char &aux (code (char-code char))) |
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(if (> (- code (char-code (if (upper-case-p char) |
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#\A #\a))) 12) |
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(code-char (- code 13)) |
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(code-char (+ code 13)))) |
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string))</lang> |
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=={{header|D}}== |
=={{header|D}}== |
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