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    <blockquote> <p>Do i really need to know how to write every single code off by heart? </p> </blockquote> <p>I wouldn't. Being able to write the code from scratch is more useful.</p> <blockquote> <p>or is reading and understanding the code enough for my goals? </p> </blockquote> <p>Depends on your goals, but I doubt it.</p> <blockquote> <p>I know there are game engines i.e. Unity3d, that were developed specifically for these purposes. </p> </blockquote> <p>Yes, many.</p> <blockquote> <p>I even saw demo games for android built in Unity3d that look astonishing. But its hard to believe that every single game/app developer out their actually sat down and wrote the whole damn code for it.</p> </blockquote> <p>Most likely not. Nor do you have to.</p> <blockquote> <p>What am i missing here? </p> </blockquote> <p>It takes experience. I write code much better than I did five years ago, after twenty years of coding.</p> <blockquote> <p>this is really not making much sense to me.</p> </blockquote> <p>You have much more to learn. I have two degrees but this was just the start of a twenty year career with hands on experience.</p> <blockquote> <p>So i guess the main question im trying to ask here is .... Do i need to learn how to write every code off by heart and understand what it means? </p> </blockquote> <p>No. Memorizing isn't very useful. Much beter to be able to write new code yourself. This takes LOTS of practice.</p> <blockquote> <p>or is it enough to understand the code and its functionality, to proceed with my goals? </p> </blockquote> <p>What are your goals?</p> <blockquote> <p>What will be the best way to proceed from here.</p> </blockquote> <p>Read this link and don't be so hard on yourself.</p> <p><a href="http://norvig.com/21-days.html" rel="nofollow">Teach Yourself Programming in Ten Years</a></p> <p>Expect to be learning all the time. The rate of development of new technologies is not slowing down and already it is more than one person can learn. Be comfortable with the idea you only know what you need to know and you can't possibly know it all.</p>
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    1. POLearn to actually write in Java or just understand the code?
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    1. POLearn to actually write in Java or just understand the code?
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    1. CO"So i guess the main question im trying to ask here is .... Do i need to learn how to write every code off by heart and understand what it means? No. Memorizing isn't very useful. Much beter to be able to write new code yourself. This takes LOTS of practice." To be clear, i meant learning how to write code from scratch as you suggested. But even then , for someone who is just learning from online tutorials, the tutorials show you how they personally write code. Which means, memorizing what they are doing. As for the goals: Android game development.
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    2. CO@user3027066 If there is a simple structure you can memorize which is useful to reuse, most likely this is a) searchable for an example of how to do this so you don't need to remember it b) a number of libraries which do it. The bits you need to write are the uncommon and specific to your application.
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      1. USPeter Lawrey
    3. CO@user3027066 Why memorize when you have the internet to search for stuff? What you need is hands on practice of how to solve problems.
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