有没有限制/限制数字的方法? [英] Is there a method to limit/clamp a number?

问题描述

我编写了以下代码，将x保持在(a..b)范围内.用伪代码:

I wrote the following code, which keeps x within the range (a..b). In pseudo code:

(if x < a, x = a; if x > b, x = b)

在Ruby中，它类似于:

In Ruby it would be something like:

x = [a, [x, b].min].max

因为它是非常基本且有用的功能，所以我想知道在ruby中是否有本机方法可以做到这一点.

As it is quite basic and useful function, I was wondering if there is a native method to do that in ruby.

从Ruby 2.3.3开始，显然没有这样的方法，最短/更易读的方法是什么?

As of Ruby 2.3.3 there is apparently no method like this, what would be the shortest/more readable way to do it?

我发现:

x = [a, x, b].sort[1]

到目前为止，但是我不确定它是否更具可读性.

so far, but I'm not sure if it is more readable.

推荐答案

Ruby 2.4.0引入了

Ruby 2.4.0 introduces Comparable#clamp:

523.clamp(0, 100)        #=> 100

这篇关于有没有限制/限制数字的方法?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！