ruby - ruby 是否支持 case 语句中的范围？

Question

我想这样做:

case cost

    when cost between 1 and 3 then cost * 1.1
    when cost between 3 and 5 then cost * 1.2
else
    0

Answer 1

是的，因为 Range#=== 定义为与 include? 相同，您可以在 case 语句中使用范围:

case cost
when 1..3 then cost * 1.1
when 3..5 then cost * 1.2