10 minutes ago, Don Green wrote:
> It is possible to create a cond test-expr that also serves as the then-body,
> however, this means that the expression would be executed twice.
>
> This seems to be ill advised in principle.
`cond' can have one-expression clauses that serve both purposes:
-> (cond [(printf "123\n")])
123
It's convenient to use in rare cases, but I usually try to avoid the
temptation since it feels wartish...
> Question: If it is ill-advised to create a cond test-expression that also
> serves as the then body, then what function is recommend?
>
> I am aware of the (cdr (or ... form.
(This looks like some assq use, which should benefit from the above.)
--
((lambda (x) (x x)) (lambda (x) (x x))) Eli Barzilay:
http://barzilay.org/ Maze is Life!
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