https://github.com/davidraab/functionalpatterns

OO Design Patterns in F#
https://github.com/davidraab/functionalpatterns

design-patterns fsharp functional-programming oop

Last synced: 7 days ago
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OO Design Patterns in F#

• Host: GitHub
• URL: https://github.com/davidraab/functionalpatterns
• Owner: DavidRaab
• License: mit
• Created: 2022-07-04T13:59:25.000Z (over 2 years ago)
• Default Branch: master
• Last Pushed: 2022-07-05T14:38:30.000Z (over 2 years ago)
• Last Synced: 2023-09-29T14:20:50.842Z (about 1 year ago)
• Topics: design-patterns, fsharp, functional-programming, oop
• Language: F#
• Homepage:
• Size: 19.5 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# Overview

This project shows different OO Design Patterns and how I solve them

in F#

## Builder

Instead of directly creating functions with a string output i use a data-structure.

Using a data-structure has many advantages. For example you need only one

function to create proper HTML code with escaping and user rules. Instead of

re-doing this, again and again.

You also can create structures that can be easily re-used.

## Decorator

* Decorator1.fsx  - Example from Video - I would change nothing

* Decorator2.java - A "good" Java Example of Decorators

* Decorator2A.fsx - Solution with DU and plain functions

* Decorator2B.fsx - Solution with a common Record

## Factory

* Factory1.fsx - PHP CarFactory example re-written in F#

* Factory2.fsx - Wikipedia IPerson example re-writte in F#

* Factory3.fsx - My own Example showing Partial Application

* Factory4.fsx - A Java Example with Shapes converted to F#

## Interpreter

* Interpreter1.fsx - A simple Calculator

## Strategy

* Strategy1.cs   - C# Example from Wikipedia

* Strategy1A.fsx - A more direct conversation of the C# version

* Strategy2B.fsx - An extended version that creates a data-structure

## Further Resources

I started this project by watching a video, but then it turned into something different.

Here are various resources I used to create this project.

* Functional Patterns: https://youtu.be/XiG-uuNKzF8

* Decorato2.java: https://www.philipphauer.de/study/se/design-pattern/decorator.php

* Factory1.fsx: https://www.ionos.de/digitalguide/websites/web-entwicklung/was-ist-das-factory-pattern/

* Factory2.fsx: https://en.wikipedia.org/wiki/Factory_method_pattern#C#

* Factory4.fsx: https://www.tutorialspoint.com/design_pattern/factory_pattern.htm

* Strategy1.fsx: https://en.wikipedia.org/wiki/Strategy_pattern#C#