f#中的可变长度元组 [英] Variable length tuples in f#

问题描述

是否可以编写一个函数来接受可变长度的元组?我正在尝试编写一种可以这样调用的方法:

Is it possible to write a function to accept a tuple of variable length? I'm trying to write a method that can be called like this:

let a = sum(1,2)
let b = sum(1,2,3)

可以将其解释为带参数的函数调用吗?还是该方法需要用c#编写:

Could it be interpreted as a function call with params? Or would the method need to be written in c#:

double sum(params object[] double) {
    ...
}

推荐答案

否-元组在定义上不是可变长度，并且要编写这样的函数，您需要在C ++中进行模板元编程之类的东西，并且没有F#中有这样的事情； let inline也不帮助您.

No - tuples are by definition not variable length, and to write a function like this you'd need something like template metaprogramming in C++ - and there isn't such a thing in F#; let inline won't help you there either.

当然，如果您选择一个列表，它看起来不会有太大不同:

Of course, if you take a list instead, it won't look that much different:

sum[1; 2]
sum[1; 2; 3]

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