我想了解如何更改在Clojure函數的let綁定中聲明的變量的值。以下是我正在使用的代碼。我希望函數返回java.lang.String對象,該對象包含String中包含的文本。是否可以修改let綁定?
(defn read-text-from-file
{:doc "fn read-text-from-file is used to output in \"string\"
format the text in a file."}
[#^String file-name]
(let [buff-reader (open-file-reader file-name)]
(loop [full-text "" line (.readLine buff-reader)]
(when line
(-> full-text (.concat line))
; (println full-text)
(recur (-> file-name (.concat line)) (.readLine buff-reader))))))
注意:函數'開放文件讀者低於:
(defn open-file-reader
{:doc "This is used to open a file, ready for reading"}
[file-name]
(let [file-object (java.io.File. file-name)
buff-reader (-> file-object (java.io.FileReader.)
(java.io.BufferedReader.))]
buff-reader))
哪一部分,你要完成的東西需要改變一個let綁定? –