Greetings, Clojure community. I've been playing around with
clojure,
and just downloaded 1.3.0. Here's a REPL session, wherein I define
a power-of-two function, and apply it a couple of times.
lecturer-01:clojure-1.3.0 kangas$ java -cp clojure-1.3.0.jar
clojure.main
Clojure 1.3.0
user=> (defn pow2 [n]
(loop [n n, p 1]
(if (zero? n)
p
(recur (dec n) (+ p p)) )))
#'user/pow2
user=> (pow2 62)
4611686018427387904
user=> (pow2 63)
ArithmeticException integer overflow
clojure.lang.Numbers.throwIntOverflow (Numbers.java:1374)
user=>
Previous versions would silently, automagically convert to bignums
and
give me the answer I wanted. Is clojure-1.3.0 too serious,
enterprisy, and
Java-like for this sort of thing? I found no clue in the list of
changes.
thanks,
George
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