如何将范围与数组进行比较？

Question

如何查看数组是否与范围匹配？

[1..3] == [1,2,3] # => false

我也试过

[1..3].to_a == [1,2,3] # => false

但是我很难过。有没有办法将范围强制转换为数组，以便将其与一个数组进行比较？

Answer 1

啊！事实证明我对语法感到困惑。

arr = [1..3] # Actually sets an array with a range as the first element
arr[0] # => 1..3

我需要的是：

(1..3).to_a == [1,2,3] # => true

Answer 2

2.1.1 :006 > [1..3].class
 => Array 
2.1.1 :007 > (1..3).class
 => Range 
2.1.1 :008 > (1..3).to_a == [1,2,3]
 => true 

希望能解决您的问题