Laurent PETIT <laurent.pe...@gmail.com> writes:
Hi Laurent,
> For this to work, instance? would have to return logical true instead
> of real true.
I'm new to clojure, so please forgive any stupid questions. But you
mean that (instance? java.lang.Integer 17) should return 17 instead of
true, right? Seems plausible, but there's this corner case:
(instance? java.lang.Boolean false)
If it returned false, then instance? would be broken. So I guess the
current behavior is correct. Maybe this can act as a workaround:
--8<---------------cut here---------------start------------->8---
user> (defn maybe-print-int [n]
(when-let [i (and (instance? java.lang.Integer n) n)]
(println "Foo" i)))
#'user/maybe-print-int
user> (maybe-print-int 17)
Foo 17
nil
user> (maybe-print-int "A String")
nil
--8<---------------cut here---------------end--------------->8---
Bye,
Tassilo
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