字符串中的 with
- (with-in-str s & body)
Evaluates body in a context in which *in* is bound to a fresh StringReader initialized with the string s.
© Rich Hickey。保留所有权利。Eclipse Public License 1.0
1 Example
;; Given you have a function that will read from *in* (defn prompt [question] (println question) (read-line)) user=> (prompt "How old are you?") How old are you? 34 ; <== This is what you enter "34" ; <== This is returned by the function ;; You can now simulate entering your age at the prompt by using with-in-str user=> (with-in-str "34" (prompt "How old are you?")) How old are you? "34" ; <== The function now returns immediately