将项目属性设置为非文字字符串在leiningen中不起作用 [英] Setting a project property to a non literal string appears to not work in leiningen
问题描述
创建一个简单的项目文件:
(defproject sample-clojure-cloudbees1.0.0-SNAPSHOT
:descriptionSample clojure application - clojure 1.3!
:blahhello)
当我读取(获得项目:blah)
如果我替换hello
:blah(slurpsome file ... p>
我得到一个错误,原因:java.lang.ClassCastException:clojure.lang.PersistentList不能转换为java.lang.String
似乎没有评估我的期望,任何想法?
defproject是一个宏将不会评估(slurp ...),除非你告诉它,
替换
:blah(slurpsome file ...)
<
:blah〜(slurpsome file ...)
pre>
会为您提供文件的内容。
Take a simple project file:
(defproject sample-clojure-cloudbees "1.0.0-SNAPSHOT" :description "Sample clojure application - clojure 1.3 !" :blah "hello")
When I read (get project :blah) I get "hello" string returned - as expected.
If I replace "hello"
:blah (slurp "some file...")
I get an error, Caused by: java.lang.ClassCastException: clojure.lang.PersistentList cannot be cast to java.lang.String
It seems to not be evaluating things how I expect, any ideas?
解决方案defproject is a macro it won't evaluate (slurp...) unless you tell it to,
replacing,
:blah (slurp "some file...")
with,
:blah ~(slurp "some file...")
will give you the content of the file.
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