Optional vs Nil

泊学 2023-01-12 21:40:53

课时名称	课时知识点
Optional vs Nil

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Require[Swift] 将Optional值require为nonnil或优雅崩溃

Swift教程：Swift基础可选类型(optional)1-拆包和绑定

主要介绍了Swift中Optional值的链式调用学习笔记,Optional链是Swift入门学习中的基础知识,需要的朋友可以参考下

开源项目-DiTo04-optional.zip,Show /r/golang: A small library for Optionals in Go.

In this free guide you will learn: What problems optionals solve and why exactly you need them in the first place. You can start using them immediately in your code, even if they seem to make no sense to you right now. You will finally understand where ! and ? go, what they mean in each context and use them confidently without having the compiler bothering you all the time When it’s not dangerous and actually needed to use implicit unwrapping, even if it has caused many crashes in your app until now Some of the advanced optional techniques that the pros use to simplify their code, even if you don’t know anything about functional programming, monads and functors. A detailed explanation of all those obscure terms you keep reading on the web, like unwrapping, optional binding, nil coalescing and guard statements. Never find yourself again not understanding the articles you read online because these terms have no meaning for you

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