ContextQMD
Back to Type Challenges

README.Zh CN

questions/00059-hard-get-optional/README.zh-CN.md

latest1.9 KB
Original Source
<!--info-header-start--><h1>获得可选属性 </h1><blockquote><p>by Zheeeng <a href="https://github.com/zheeeng" target="_blank">@zheeeng</a></p></blockquote><p><a href="https://tsch.js.org/59/play/zh-CN" target="_blank"></a> &nbsp;&nbsp;&nbsp;<a href="./README.md" target="_blank"></a> <a href="./README.ja.md" target="_blank"></a> </p><!--info-header-end-->

实现高级工具类型 GetOptional<T>，该类型保留所有可选属性

例如

ts
type I = GetOptional<{ foo: number, bar?: string }> // expected to be { bar?: string }
<!--info-footer-start-->

<a href="../../README.zh-CN.md" target="_blank"></a> <a href="https://tsch.js.org/59/answer/zh-CN" target="_blank"></a> <a href="https://tsch.js.org/59/solutions" target="_blank"></a> <hr><h3>相关挑战</h3><a href="https://github.com/type-challenges/type-challenges/blob/main/questions/00057-hard-get-required/README.zh-CN.md" target="_blank"></a> <!--info-footer-end-->