F#中是否有条件访问运算符(类似于C#中的new?.)? [英] Is there conditional access operator in F# (similar to new ?. in C#)?

问题描述

现在?运算符.

推荐答案

在功能语言中，嵌套结构中的条件/组合遍历，尤其是嵌套结构中的特殊遍历通常使用透镜的概念来建模，透镜的概念是

In functional languages, conditional / compositional traversal, especial in nested structures is generally modelled using the notion of lenses which is explained with a succinct example in this SO thread.

在F#环境中，有 Aether ；请参阅简介文章和

In the F# environment, there's Aether; see intro article and guide, which builds on the Lenses support developed and written about by Mauricio Scheffer in FSharpx here.

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