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How can I initialise a static Map?
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Regular vs Context Free Grammars
...is only one production rule for a given non-terminal, whereas there can be more than one in the case of a context-free grammar.
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What is the difference between integration and unit tests?
...ce they stress the code in a scenario close to reality. They invoke one or more software methods or features and test if they act as expected.
On the opposite, a Unit test testing a single method relies on the (often wrong) assumption that the rest of the software is correctly working, because it e...
Why is semicolon allowed in this python snippet?
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Checking for NULL pointer in C/C++ [closed]
...e a conversion to pointer which may have other semantic side effects or be more expensive than the simple existence check that the bool conversion implies.
I have a preference for code that says what it means without unneeded text. if (ptr != NULL) has the same meaning as if (ptr) but at the cost o...
How can I use functional programming in the real world? [closed]
...s definitely interesting, but so far I think it is making me want to stick more and more with C#, using libraries like Parallel Extensions.
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Minimum and maximum value of z-index?
...cified in decimal
notation only. An <integer>
consists of one or more digits "0" to
"9". A <number> can either be an
<integer>, or it can be zero or
more digits followed by a dot (.)
followed by one or more digits. Both
integers and real numbers may be
preceded by a...
How to center a “position: absolute” element
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How do you declare an interface in C++?
...protected destructor. This disables polymorphic destruction, which may be more appropriate in some circumstances. Look for "Guideline #4" in gotw.ca/publications/mill18.htm.
– Fred Larson
Nov 25 '08 at 19:06
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Python `if x is not None` or `if not x is None`?
I've always thought of the if not x is None version to be more clear, but Google's style guide and PEP-8 both use if x is not None . Is there any minor performance difference (I'm assuming not), and is there any case where one really doesn't fit (making the other a clear winner for my convent...