我尝试使用 *print-dup* 将 Clojure 数据写入文件并读取,但即使在这个简单的案例中,我也遇到了问题。我做错了什么吗?我需要怎么做才能让它工作?
Clojure 1.3.0-alpha3-SNAPSHOT
user=> (defrecord TreeNode [val left right]) ;;create the record
user.TreeNode
user=> (TreeNode. 5 nil nil)
#:user.TreeNode{:val 5, :left nil, :right nil} ;; it works just fine
user=> (binding [*print-dup* true] (prn (TreeNode. 5 nil nil))) ;; use *print-dup* to support reading in and preserving type
#=(user.TreeNode/create {:val #=(java.lang.Long. "5"), :left nil, :right nil}) ;; this is the form we need to copy paste
nil
user=> #=(user.TreeNode/create {:val #=(java.lang.Long. "5"), :left nil, :right nil}) ;;trying to copy and paste
IllegalArgumentException No matching method found: create
clojure.lang.Reflector.invokeMatchingMethod (Reflector.java:50) ;;we have an error
user=>