Hi,
please can someone explain to me why the following even works?
(define sym 'b)
(case sym
('a "an 'a'")
('b "a 'b'")
('c "a 'c'")
(else "something else")) ; -> a 'b'
The correct case-form for the above example should be:
(case sym
((a) "an 'a'")
((b) "a 'b'")
((c) "a 'c'")
(else "something else"))
I know the r5rs document just says "Each <clause> _should_ have the
form ((<datum1> ...) <expression1> <expression2> ...)
Surprisingly my "quote-variant" (which is obviously not in the _should_
form) also works in Racket and Chez (and even mit-scheme - although
they changed the documentation for "case" somewhat
(https://www.gnu.org/software/mit-scheme/documentation/mit-scheme-ref/Conditionals.html)
- "Each clause has this form...").
lg
Martin
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