問題：
I am trying to understand blocks and yield and how they work in Ruby.我試圖瞭解塊和yield以及它們在 Ruby 中的工作方式。
How is yield used? yield如何使用？ Many of the Rails applications I've looked at use yield in a weird way.我看過的許多 Rails 應用程序都以一種奇怪的方式使用了yield 。
Can someone explain to me or show me where to go to understand them?有人可以向我解釋或告訴我去哪裏理解他們嗎？
解決方案：
參考一： https://stackoom.com/question/Crmx參考二： Blocks and yields in Ruby