在本手册中,他们说如下(关于范围)：

A final use of the versatile range is as an interval test: seeing if
some value falls within the interval represented by the range. This is
done using ===,the case equality operator.

有了这些例子：

>(1..10)=== 5»true
>(1..10)=== 15»虚假
>(1..10)=== 3.14159»真的
>(‘a’..’j’)===’c’»true
>(‘a’..’j’)===’z’»false

在阅读了关于Ruby的“===”运算符here之后,我发现这在范围上有效,因为Ruby将其转换为case语句.

So you may want to be able to put the range in your case statement,
and have it be selected. Also,note that case statements translate to
b===a in statements like case a when b then true end.

但是我有以下问题：为什么以下命令返回true？

(1..10)=== 3.14159»真的

由于(1..10)是指[1,2,3,4,5,6,7,8,9,10],我预计结果是假的.