https://github.com/farlee2121/bidirectionalmap

A two-way lookup for dotnet standard
https://github.com/farlee2121/bidirectionalmap

dotnet dotnet-standard map

Last synced: about 2 months ago
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A two-way lookup for dotnet standard

• Host: GitHub
• URL: https://github.com/farlee2121/bidirectionalmap
• Owner: farlee2121
• Created: 2020-04-22T12:24:25.000Z (about 5 years ago)
• Default Branch: main
• Last Pushed: 2025-01-06T23:18:02.000Z (5 months ago)
• Last Synced: 2025-03-29T07:04:31.068Z (2 months ago)
• Topics: dotnet, dotnet-standard, map
• Language: C#
• Homepage:
• Size: 56.6 KB
• Stars: 17
• Watchers: 1
• Forks: 3
• Open Issues: 1
• Metadata Files:
  • Readme: ReadMe.md

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README

        
Bidirectional Map

=================

![build](https://github.com/farlee2121/BidirectionalMap/workflows/Build/badge.svg)

[![codecov](https://codecov.io/gh/farlee2121/BidirectionalMap/branch/master/graph/badge.svg)](https://codecov.io/gh/farlee2121/BidirectionalMap)

[![Nuget](https://img.shields.io/nuget/v/BidirectionalMap)](https://www.nuget.org/packages/BidirectionalMap/)

Exactly what it sounds like. This library offers a single class `BiMap` that let's you define a two-way one-to-one map between values

the same way you would define a one-way map with a dictionary.

Example:

--------

```cs

using BidirectionalMap;

BiMap map = new BiMap(){

	{1, "Circle"},

	{2, "Triangle"},

	{3, "Square"},

};

var mappedString = map.Forward[1]; //"Circle"

var mappedInt = map.Reverse["Circle"]; // 1

```

It isn't limited to value types

```cs

BiMap map = new BiMap(){

	{1, () => /* do something*/},

};

var action = map.Forward[1]; 

```

Why?

---

Well, table-driven value mapping is a very powerfull technique that makes conversions more readable, easier to update, and easier to load from non-code sources.  

Some common scenarios for this kind of technique include

 - Mapping to some kind of storage (say, converting between enum and string)

 - Mapping display values to and from requests

 - Wrapping other code (adapter-style) to consume the api on your own terms

 - Choosing an action or configuration based on some kind of type value (this is usually just one-way though)

Install

-------

Available via nuget at https://www.nuget.org/packages/BidirectionalMap/	

Feedback/Bugs/Contribution

--------------------------

 

 Feel free to open an issue to start the conversation.