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<!doctype html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no">
<title>Healing F# withdrawal with C# - inficon pro 2019</title>
<link rel="stylesheet" href="css/reset.css">
<link rel="stylesheet" href="css/reveal.css">
<link rel="stylesheet" href="css/theme/black.css">
<!-- Theme used for syntax highlighting of code -->
<link rel="stylesheet" href="lib/css/monokai.css">
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<script>
var link = document.createElement('link');
link.rel = 'stylesheet';
link.type = 'text/css';
link.href = window.location.search.match(/print-pdf/gi) ? 'css/print/pdf.css' : 'css/print/paper.css';
document.getElementsByTagName('head')[0].appendChild(link);
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</head>
<body>
<div class="reveal">
<div class="slides">
<section>
<h2>Healing F# withdrawal with C#</h2>
<small>Mendel Agterberg - InfiCon Pro 2019</small>
<aside class="notes">
Learned F#, was fun, some bit of feature-envy.
Some things i can do without, others i really miss. So i started looking how I can Apply it to c#
</aside>
</section>
<section>
<h2>F# features in C#</h2>
<table style="font-size: 60%">
<tr>
<th>F# Feature</th>
<th>C# Implementation</th>
</tr>
<tr>
<td>Functional First</td>
<td>OO First</td>
</tr>
<tr>
<td>Higher-order functions</td>
<td>C#, Funcs and Actions</td>
</tr>
<tr>
<td>Value types</td>
<td>ValueOf</td>
</tr>
<tr>
<td>Discriminated Unions</td>
<td>OneOf</td>
</tr>
<tr>
<td>Pattern Matching</td>
<td>OneOf/Language-ext</td>
</tr>
<tr>
<td>Currying/Partial Application</td>
<td>Language-ext</td>
</tr>
<tr>
<td>Immutability</td>
<td>Language-ext, collections, records</td>
</tr>
<tr>
<td>Expressions</td>
<td>Language-ext</td>
</tr>
<tr>
<td>REPL</td>
<td>-</td>
</tr>
</table>
<aside class="notes">
So looking at this table, just the tip of the iceberg of feature. Not everything is great in c#.
Basicly 2 options, use a library like language ext/oneOf or valueOf/ implement it a bit hacky
yourself in C#.
</aside>
</section>
<section>
<h2>F# features in C#</h2>
<table style="font-size: 60%">
<tr>
<th>F# Feature</th>
<th>C# Implementation</th>
</tr>
<tr>
<td>Functional First</td>
<td>OO First</td>
</tr>
<tr>
<td>Higher-order functions</td>
<td>C#, Funcs and Actions</td>
</tr>
<tr style="color: orangered">
<td>Value types</td>
<td>ValueOf</td>
</tr>
<tr style="color: orangered">
<td>Discriminated Unions</td>
<td>OneOf</td>
</tr>
<tr>
<td>Pattern Matching</td>
<td>OneOf/Language-ext</td>
</tr>
<tr>
<td>Currying/Partial Application</td>
<td>Language-ext</td>
</tr>
<tr>
<td>Immutability</td>
<td>Language-ext, collections, records</td>
</tr>
<tr>
<td>Expressions</td>
<td>Language-ext</td>
</tr>
<tr>
<td>REPL</td>
<td>-</td>
</tr>
</table>
<aside class="notes">
I'm going to talk about 2 features, a solution to the Primitve obsession. with valueOf and
a Enum on speed called Discriminated Union in OneOf.
</aside>
</section>
<section>
<h2>Solution for primitive types</h2>
<ul>
<li>Wrapping primitive types</li>
<li>More explicit</li>
<li>Less error prone</li>
</ul>
</section>
<section>
<h2>Discriminated Unions</h2>
<ul>
<li>Domain modeling</li>
<li>Makes branching more explicit</li>
</ul>
</section>
<section>
<h2>More on Discriminated Unions</h2>
<ul>
<li>Domain modeling</li>
<li>Makes branching more explicit</li>
</ul>
</section>
<section>
<h2>Recap</h2>
<ul>
<li>Learn, apply</li>
</ul>
</section>
<section>
<h2>Questions?</h2>
<p>Extra sources</p>
<ul>
<li><a href="https://github.com/mcintyre321/OneOf">OneOf</li>
<li><a href="https://github.com/mcintyre321/ValueOf">ValueOf</li>
<li><a href="https://github.com/louthy/language-ext">Language-ext</li>
<li><a href="https://pragprog.com/book/swdddf/domain-modeling-made-functional">Domain modeling made
functional - Scott Wlaschin</li>
<li><a href="https://pragprog.com/book/swdddf/domain-modeling-made-functional">Applying Functional
Principles in C# - Vladimir Khorikov</li>
</ul>
</section>
</div>
</div>
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</body>
</html>