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Dutch translation #199

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52 changes: 52 additions & 0 deletions translations/README-nl.md
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<p align="center">
<br/>
<a href="https://github.com/ziishaned/learn-regex">
<img src="https://i.imgur.com/bYwl7Vf.png" alt="Learn Regex">
</a>
<br /><br />
<p>
<a href="https://twitter.com/ziishaned">
<img src="https://img.shields.io/twitter/follow/ziishaned.svg?style=social" />
</a>
<a href="https://github.com/ziishaned">
<img src="https://img.shields.io/github/followers/ziishaned.svg?label=Follow%20%40ziishaned&style=social" />
</a>
</p>
</p>

## Vertalingen:

* [English](README.md)
* [Español](translations/README-es.md)
* [Français](translations/README-fr.md)
* [Português do Brasil](translations/README-pt_BR.md)
* [中文版](translations/README-cn.md)
* [日本語](translations/README-ja.md)
* [한국어](translations/README-ko.md)
* [Turkish](translations/README-tr.md)
* [Greek](translations/README-gr.md)
* [Magyar](translations/README-hu.md)
* [Polish](translations/README-pl.md)
* [Русский](translations/README-ru.md)
* [Tiếng Việt](translations/README-vn.md)
* [فارسی](translations/README-fa.md)
* [Nederlands](README-nl.md)

## Wat zijn reguliere expressies?

> Een reguliere expressie omschrijft een verzameling tekenreeksen of symbolen die worden gebruikt om bepaalde patronen in een tekst te vinden.

Een reguliere expressie is een patroon dat overeenkomt bij een bepaald tekenreeks
van links naar rechts. Dit wordt a.d.h.v. het gekozen tekenreeks/karakter die
dan vervolgens het gewenste patroon zal moeten verkrijgen om bv.
stukken tekst te doorzoeken, bewerken, filteren, en nog zo veel meer.
De term "reguliere expressie" is weliswaar een mondvol. Meestal zul je de afkortingstermen
"regex" of "regexp" tegenkomen.

Imagine you are writing an application and you want to set the rules for when a
user chooses their username. We want to allow the username to contain letters,
numbers, underscores and hyphens. We also want to limit the number of characters
in the username so it does not look ugly. We can use the following regular expression to
validate the username: