windor
Scala 初学者指南

Updated 2 years ago

Yuanfei Zhu (@yuanfeiz) started discussion #3

3 years ago · 1 comment

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当一个 Try 是 Success 时, foreach 允许你在被包含的元素上执行副作用, 这种情况下,传递给 foreach 的函数只会执行一次,毕竟 Try 里面只有一个元素:

Try 与错误处理 (Edit this file)

这个挺不intuitive的..

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Jiafeng Cao @windor commented 3 years ago

Yes, It's. I doesn't have time to review the files. Give a PR if you'd like to. Thanks.

Yuanfei Zhu @yuanfeiz commented 3 years ago

I was nitpicking the design of the language that reuse foreach among Option and Seq but with very different interpretations. The guide is pretty clear.


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