如何在Clojure中以字符串形式获取函数名称？ [英] How to get function's name as string in Clojure?

问题描述

如何在Clojure中以字符串的形式获取函数名称？

How can you get function's name as string in Clojure?

到目前为止，我所学到的东西似乎都不是惯用的：

What I have so far doesn't look anywhere near idiomatic:

(defn fn-name
  [f]
  (first (re-find #"(?<=\$)([^@]+)(?=@)" (str f))))

(defn foo [])

(fn-name foo) ;; returns "foo"

编辑：根据提供的提示，我将我想要的基本宏。看起来好些吗？

With the provided hints I put together a basic macro that does what I want. Does it look better?

(defmacro fn-name
  [f]
  `(-> ~f var meta :name str))

推荐答案

对于函数使用 defn 形式定义：

For functions defined with the defn form:

user> (-> #'map meta :name)
map
user> (defn nothing [& _])
#'user/nothing
user> (-> #'nothing meta :name)
nothing

这需要访问var，而不仅仅是var保留的函数值。

This requires access to the var, rather than just the function value the var holds.

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