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Creating a singleton in Python
...t is most pythonic. In this instance I define 'most pythonic' to mean that it follows the 'principle of least astonishment' .
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Proper use of the IDisposable interface
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The point of Dispose is to free unmanaged resources. It needs to be done at some point, otherwise they will never be cleaned up. The garbage collector doesn't know how to call DeleteHandle() on a variable of type IntPtr, it doesn't know whether or not it needs to call DeleteHan...
In practice, what are the main uses for the new “yield from” syntax in Python 3.3?
...n begin to do justice to what yield from is all about. Because, let's face it, if all yield from does is expand the for loop, then it does not warrant adding yield from to the language and preclude a whole bunch of new features from being implemented in Python 2.x.
What yield from does is it establ...
Differences between Octave and MATLAB? [closed]
...o learn GNU Octave or Matlab. I know that they have a lot in common , but it isn't clear to me how similar the syntax is or even the data structures are. The above link shows several examples where they are syntactically similar or identical, is this true for the whole language?
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Learning to write a compiler [closed]
...ler Construction $
Compiler Design and Construction $
Crafting a Compiler with C $
Crafting Interpreters
Compiler Design in C ¶
Compilers: Principles, Techniques, and Tools $ — aka "The Dragon Book"; widely considered "the book" for compiler writing.
Engineering a Compiler $
Essentials of Program...
Is there still any reason to learn AWK?
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I think it depends on the environment you find yourself in. If you are a *nix person, then knowing awk is a Good Thing. The only other scripting environment that can be found on virtually every *nix is sh. So while grep, sed, etc can...
How to detect if a property exists on an ExpandoObject?
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According to MSDN the declaration shows it is implementing IDictionary:
public sealed class ExpandoObject : IDynamicMetaObjectProvider,
IDictionary<string, Object>, ICollection<KeyValuePair<string, Object>>,
IEnumerable<KeyValuePair&...
How to force the browser to reload cached CSS/JS files?
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Update: Rewritten to incorporate suggestions from John Millikin and da5id. This solution is written in PHP, but should be easily adapted to other languages.
Update 2: Incorporating comments from Nick Johnson that the original .htaccess...
Continuous Integration for Ruby on Rails? [closed]
...uous Integration solution for Ruby on Rails, but haven't been too pleased with the results. I came from a .NET shop that used CruiseControl.NET and was really spoiled with its ease of use and rich status/reporting.
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Is it safe to use -1 to set all bits to true?
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I recommend you to do it exactly as you have shown, since it is the most straight forward one. Initialize to -1 which will work always, independent of the actual sign representation, while ~ will sometimes have surprising behavior because you will...