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Code Golf: Lasers

...is sitting on top of now. Since the laser emitter is to be treated like a wall, set this to be a wall to begin with. if (tr/v<^/>v</) { my $o; $o .= "\n" while s/.$/$o .= $&, ""/meg; tr,/\\,\\/, for $o, $s; $_ = $o; } If the laser beam is pointing any way except right, rotate...
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error LNK2019: unresolved external symbol _WinMain@16 referenced in function ___tmainCRTStartup

... This worked only after I selected "all configurations" for both platform and type. Selecting "build" on the "Solution" attempted to build all and the first one tried was NOT the one had specified for console subsystem. – Joseph Stateson ...
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Getting Django admin url for an object

...e was an easy way to get the admin url of an object, and I had written a small filter that I'd use like this: <a href="{{ object|admin_url }}" .... > ... </a> ...
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Parse a .py file, read the AST, modify it, then write back the modified source code

I want to programmatically edit python source code. Basically I want to read a .py file, generate the AST , and then write back the modified python source code (i.e. another .py file). ...
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How do I include a file over 2 directories back?

.... And (2) you’d still use a relative path in your define, Unless you actually hard-code the whole absolute server path and I would refrain from that since it has only disadvantages. Or (the third alternative) you could use string manipulation to extract parent directory from the (expanded) current...
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__lt__ instead of __cmp__

...ttributes of the new class it's decorating (the result might be microscopically faster at runtime, at equally minute cost in terms of memory). Of course, if your class has some particularly fast way to implement (e.g.) __eq__ and __ne__, it should define them directly so the mixin's versions are no...
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Ruby: require vs require_relative - best practice to workaround running in both Ruby =1.

...ernel def require_relative(path) require File.join(File.dirname(caller[0]), path.to_str) end end end This allows you to use require_relative as you would in ruby 1.9.2 in ruby 1.8 and 1.9.1. share ...
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RuntimeError on windows trying python multiprocessing

...void creating subprocesses recursively. Modified testMain.py: import parallelTestModule if __name__ == '__main__': extractor = parallelTestModule.ParallelExtractor() extractor.runInParallel(numProcesses=2, numThreads=4) ...
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Python __str__ versus __unicode__

...onfusing, but in 2.x we're stuck with them for compatibility reasons. Generally, you should put all your string formatting in __unicode__(), and create a stub __str__() method: def __str__(self): return unicode(self).encode('utf-8') In 3.0, str contains characters, so the same methods are nam...
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Why are all fields in an interface implicitly static and final?

I am just trying to understand why all fields defined in an Interface are implicitly static and final . The idea of keeping fields static makes sense to me as you can't have objects of an interface but why they are final (implicitly)? ...