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Elegant ways to support equivalence (“equality”) in Python classes
...om classes it is often important to allow equivalence by means of the == and != operators. In Python, this is made possible by implementing the __eq__ and __ne__ special methods, respectively. The easiest way I've found to do this is the following method:
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Is it abusive to use IDisposable and “using” as a means for getting “scoped behavior” for exception
Something I often used back in C++ was letting a class A handle a state entry and exit condition for another class B , via the A constructor and destructor, to make sure that if something in that scope threw an exception, then B would have a known state when the scope was exited. This isn't pur...
How to get orientation-dependent height and width of the screen?
I'm trying to programmatically determine the current height and width of my application. I use this:
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What's the difference between %s and %d in Python string formatting?
I don't understand what %s and %d do and how they work.
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SHA512 vs. Blowfish and Bcrypt [closed]
...2 (in the context of an appropriate algorithm like PBKDF2) is good enough. And the answer is yes, either algorithm is secure enough that a breach will occur through an implementation flaw, not cryptanalysis.
If you insist on knowing which is "better", SHA-512 has had in-depth reviews by NIST and ot...
Why should I care about lightweight vs. annotated tags?
I switched from Subversion to Git as my day-to-day VCS last year and am still trying to grasp the finer points of "Git-think".
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Should I use a class or dictionary?
I have a class that contains only fields and no methods, like this:
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What is the difference between the $parse, $interpolate and $compile services?
What is the difference between $parse , $interpolate and $compile services?
For me they all do the same thing: take template and compile it to template-function.
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equals vs Arrays.equals in Java
...ntents of the arrays.
Similarly array.toString() may not be very useful and you need to use Arrays.toString(array).
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What is the difference between an interface and a class, and why I should use an interface when I ca
... is a very basic question, but an interviewer asked me in a very trick way and I was helpless :(
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