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POLearning Common Lisp tips for a Windows/C++ programmer
 

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  1. POLearning Common Lisp tips for a Windows/C++ programmer
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    <p>I'm an experienced C++/.NET/Java Windows/web programmer trying to learn (Common) Lisp. I'm reading <a href="http://en.wikipedia.org/wiki/Practical_Common_Lisp" rel="nofollow">Practical Common Lisp</a> and using <a href="http://en.wikipedia.org/wiki/SLIME" rel="nofollow">SLIME</a>.</p> <p>I'm getting the Lisp language easily enough, but I'm having trouble groking the mechanics of development. One of my issues is dealing with Emacs. I have no experience with it and find it generally confusing with hard to find/figure out commands.</p> <p>Specific questions:</p> <ul> <li>I get the <a href="http://en.wikipedia.org/wiki/Read-eval-print_loop" rel="nofollow">REPL</a>, but I don't quite get how I can use it effectively. When I need to change a function I have to retype the defun and make changes (tedious and error prone). How can I do this better?</li> <li>How do I get from entering code at the REPL to actually having a program? I'm used to the C model where you have code files that you can review, edit and recompile. I know Lisp has something similar (via the load function), but how does one get a function I just defined and tested into a file to be saved? I'm hoping there's a better method than my current select+copy+paste.</li> <li>How do you debug errors? Is there any ability to step into code like I would with other languages?</li> <li>As long as the S-expression is valid, I don't get any errors when entering a <code>(defun ...)</code>. It's not until I try to use it that I find out it's not valid. Is there any way to get errors sooner (i.e. compile the code)?</li> <li>Is there some IDE that would be more familiar to me or allow me to play with the language easier?</li> <li>Should I switch to learning <a href="http://en.wikipedia.org/wiki/Scheme_%28programming_language%29" rel="nofollow">Scheme</a> instead?</li> </ul> <p>Any tips would be greatly appreciated!</p>
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    1. USPeter Mortensen
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    1. COYou might also want to look into Clojure; it's a lisp that operates on the JVM and has nice interop. with Java. I've not worked with it yet, but have watched a few lectures on it, and it looks nice.
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