使用自定义命名空间中的核心函数答案

【问题标题】：Using core functions from a custom namespace使用自定义命名空间中的核心函数
【发布时间】：2014-01-21 06:44:34
【问题描述】：

我正在尝试 refer 和 qualify 自定义命名空间中的基本核心功能，但没有运气：

cplay.core> (refer 'clojure.core)
nil
cplay.core> (clojure.core/refer 'clojure.core)
nil
cplay.core> (doc memoize)
CompilerException java.lang.RuntimeException: Unable to resolve symbol: doc in this context, compiling:(/private/var/folders/0h/lzx021jx1rl95vhfxmcppmlc0000gn/T/form-init7998067657898575130.clj:1:1) 
cplay.core> (clojure.core/doc memoize)
CompilerException java.lang.RuntimeException: No such var: clojure.core/doc, compiling:(/private/var/folders/0h/lzx021jx1rl95vhfxmcppmlc0000gn/T/form-init7998067657898575130.clj:1:1)

我确定这里发生了一些简单的事情，有人可以建议吗？

【问题讨论】：

标签： clojure

【解决方案1】：

您应该 refer clojure.repl 使用 doc 宏。

user=> (ns xxx)
nil
xxx=> (clojure.repl/doc memoize)
-------------------------
clojure.core/memoize
([f])
  Returns a memoized version of a referentially transparent function. The
  memoized version of the function keeps a cache of the mapping from arguments
  to results and, when calls with the same arguments are repeated often, has
  higher performance at the expense of higher memory use.
nil
xxx=> (refer 'clojure.repl)
nil
xxx=> (doc memoize)
-------------------------
clojure.core/memoize
([f])
  Returns a memoized version of a referentially transparent function. The
  memoized version of the function keeps a cache of the mapping from arguments
  to results and, when calls with the same arguments are repeated often, has
  higher performance at the expense of higher memory use.
nil

【讨论】：

【解决方案2】：

首先(use clojure.repl)，然后尝试(doc memoize)

【讨论】：