常见错误：一个函数可以接受多少个参数？ [英] Common lisp: How many argument can a function take?

问题描述

可能重复：

以下代码给出参数过多错误：

The following code gives a "too many argument" error:

(setf u (loop for i upto 50000 collect 1))
(apply #'+ u)

对于

(apply #'= u)

因此，我猜想用& rest编写defun时，参数数量是有上限的。它是什么？我在此处搜索并尝试过

So I guess when writing defun with &rest there is an upper bound for the number of arguments. What is it? I searched and tried here and various pages on that site but I couldn't figure this out.

推荐答案

有一个名为CALL-ARGUMENTS-LIMIT的常量，该常量给出了可以传递给函数的参数个数的上限。

There is a constant called CALL-ARGUMENTS-LIMIT that gives you the upper bound of how many arguments you can pass to a function.

但是，在最初的示例中，您绝对可以使用REDUCE：

However, in your initial example, you can definitely use REDUCE:

(reduce #'+ u)

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