I frequently find myself wishing that you could use internal
definitions in cond without introducing additional indentation, for
example something like:
(define (fun-for-list l)
(cond
[(empty? l) ...]
(define fst (first l))
[(even? fst) ...]
[(odd? fst) ...]))
rather than
(define (fun-for-list l)
(cond
[(empty? l) ...]
[else
(define fst (first l))
(cond
[(even? fst) ...]
[(odd? fst) ...])]))
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