My point was that it is not a missing capability,
Say you want to accumulate some changes, in this case sum odd numbers:
In C++ someone might write this:
int x = 0;
for (int i=0; i<100; i++) {
if ( i%2==1 ) x+=i;
}
However in Clojure you have a choice:
(reduce + (range 1 100 2))
Or you could do a direct translation to Clojure:
(with-local-vars [i 0, x 0]
(while (< @i 100)
(if (= 1 (rem @i 2)) (var-set x (+ @x @i)))
(var-set i (inc @i)))
@x)
Both get the same result, but have very different styles.
The version without variables is much easier to understand, provided
you know what reduce does. So it takes a little bit of work initially
to stop using variables, but it is well worth the effort.
Regards,
Tim.
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