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71 lines
3.0 KiB
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.. _netscriptlearntoprogram:
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Learn to Program in Netscript
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=============================
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Netscript is simply a subset of
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`JavaScript <https://developer.mozilla.org/en-US/docs/Web/JavaScript>`_,
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with some additional functions added in to allow interaction with the game.
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For Beginner Programmers
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------------------------
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If you have little to no programming experience, that's okay! You don't need to be
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a great programmer in order to enjoy or play this game. In fact, this game could
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help you learn some basic programming concepts.
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Here are some good tutorials for learning programming/JavaScript as a beginner:
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* `Learn-JS <http://www.learn-js.org/en/Welcome>`_
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* `Speaking JavaScript <http://speakingjs.com/es5/index.html>`_
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This is a bit on the longer side. You can skip all of the historical
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background stuff. Recommended chapters: 1, 7-18
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For Experienced Programmers
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---------------------------
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The following section lists several good tutorials/resources for those who have experience
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programming but who have not worked extensively with JavaScript before.
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Before that, however, it's important to clarify some terminology about the different
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versions of JavaScript. These are summarized in this article:
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`WTF is ES6, ES8, ES2017, ECMAScript... <https://codeburst.io/javascript-wtf-is-es6-es8-es-2017-ecmascript-dca859e4821c>`_
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An important takeaway from this article is that ES6, also known as ES2015, introduced
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many major features that are commonly seen in modern JavaScript programming. However, this
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means that ES5 engines and interpreters will fail if they encounters these ES6 features. You'll see why this
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is important further down.
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* `MDN Introduction to JS <https://developer.mozilla.org/en-US/docs/Web/JavaScript/A_re-introduction_to_JavaScript>`_
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* `Eloquent JavaScript (ES6+) <http://eloquentjavascript.net/>`_
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Recommended Chapters: Introduction, 1-6
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* `Modern Javascript Tutorial (ES6+) <https://javascript.info/>`_
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Recommended Chapters: 2, 4-6
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Netscript 1.0 vs Netscript 2.0
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------------------------------
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There are two versions of Netscript:
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* :doc:`netscript1`
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* :doc:`netscriptjs`
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Visit the pages above to get more details about each version. If you are new
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to programming or unfamiliar with JavaScript, I would recommend starting out
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with :doc:`netscript1`. Experienced web developers can use :doc:`netscriptjs`
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to take advantage of faster speeds and additional features.
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Here is a short summary of the differences between Netscript 1.0 and Netscript 2.0:
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**Netscript 1.0**
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* ES5
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* Some ES6 features implemented with polyfills
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* Slow compared to NetscriptJS (interpreter runs at the "Netscript Exec Time" speed configured in options)
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* Compatible with all browsers
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**Netscript JS (Netscript 2.0)**
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* Supports (almost) all features of modern JavaScript
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* Extremely fast - code is executed as an Async Function
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* Currently only works with Google Chrome browser
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* Each script becomes a module and therefore all instances of that script can easily
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share data between each other (essentially global/static variables)
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