Scheme可以将列表扩展为参数吗? [英] Can Scheme expand a list as arguments?

问题描述

考虑到我有一个过程(plus x y)女巫正好需要两个参数.现在，我还有一个列表，其中包含两个对象，例如(list 1 2).因此，如果有任何魔术方法将列表扩展为两个参数.我们有一个点概念版本，但是不是我想要的版本.我只想扩展列表，以使Scheme相信我传递了两个参数而不是列表.

Considered that I have a procedure (plus x y) witch takes exactly two args. And now I also have a list which contains two objects like (list 1 2). So, if there's any magic way to expand the list as two arguments. We have a dot notion version, but that isn't what i want. I just want to expand the list to make Scheme believe I passed two arguments instead of a list.

希望这些Ruby代码有帮助:

Hope those Ruby codes help:

a = [1, 2]
def plus(x,y); x+y; end

plus(*a)
# See that a is an array and the plus method requires
# exactly two arguments, so we use a star operator to
# expand the a as arguments

推荐答案

(apply your-procedure your-list)

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