F#等效于ILookup< string，string> [英] F# equivalent of ILookup<string, string>

问题描述

我是F#新手，我正在尝试用F#编写一个小程序，该程序与我拥有的C#库进行对话. C#函数采用类型为ILookup< string，string>的参数.

I'm a F# newbie and I'm trying to write a small program in F# that talks to a C# library that I have. The C# function takes a parameter that is of type ILookup<string,string>.

我如何从F#中调用它?

How do I call this from F# ?

致谢

Alan

推荐答案

您可以使用在C#中完全相同的方法来执行此操作，并使用System.Linq.Enumerable.ToLookup ()方法为您生成ILookup.

You could do this the exact same way it's done in C# and use the System.Linq.Enumerable.ToLookup() method to generate an ILookup for you.

通过向Seq模块添加扩展，也可以使元组序列转换为ILookup，从而使这种感觉更像是惯用的F#.函数将元组序列转换为IDictionary:

You could also make this feel more like idiomatic F# by adding an extension to the Seq module that turns a sequence of tuples into an ILookup the same way the "dict" function turns a sequence of tuples into an IDictionary:

module Seq =

    let inline toLookup items = 
        System.Linq.Enumerable.ToLookup(items, fst, snd)

这篇关于F#等效于ILookup&lt; string，string&gt;的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！