新版本的变更 / Ruby 2.6
Endless ranges
The then method (alias for yield_self)
Proc composition with #>> and #<<
Array#union and Array#difference
Enumerable#chain
Integer()/Float() with exception: false
Range#cover? accepts a Range
Array#union and Array#difference
此示例属于完整版，可在应用商店购买：
Code Recipes
App Store
已经购买？登录您的账户