更新时间:2023-10-02 21:56:04
变量在Clojure中是不可变的。因此,您不应尝试更改 foo
的值,而应创建一个新的foo:
Variables are immutable in Clojure. So you should not try to change the value of foo
, but instead, "create" a new foo:
(def foo2 (+ foo 0.1))
...或者,如果是循环,则使用新值重复出现:
...or, if in a loop, recur with a new value:
(loop [foo 5.0]
(when (< foo 9)
(recur (+ foo 0.1))))
。 。或者,如果foo是一个原子,则 swap!
用新值替换它:
...or, if foo is an atom, swap!
it with a new value:
(def foo (atom 5.0))
(swap! foo (partial + 0.1))
我建议您先阅读 Clojure的原理。