在Lisp中，如何使用floor函数返回的第二个值? [英] In lisp, how do I use the second value that the floor function returns?

问题描述

当我这样做时(4楼3楼)，我得到了

When I do (floor 4 3) I got

1
1/3

但是我该如何使用1/3?

But how do I use that 1/3?

推荐答案

例如，您可以使用multiple-value-bind将其绑定到变量.

You can for instance bind it to a variable using multiple-value-bind.

(multiple-value-bind (quot rem)
    (floor 4 3)
  (format t "The remainder is ~f~%" rem))

如果您仅对一个非主值感兴趣，另一种可能性是nth-value.

Another possibility, if you're only interested in one non-primary value, is nth-value.

(format t "The remainder is also ~f~%" (nth-value 1 (floor 4 3)))

有关参考，请参见 Hyperspec .

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