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What is polymorphism, what is it for, and how is it used?
...the object is instantiated that a concrete version is required, ie vehicle vs car
– wired00
Oct 30 '14 at 2:09
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Log all requests from the python-requests module
...g? I guess it could be a way to set different logging levels for the root vs the urllib3, if desired.
– nealmcb
Jul 2 '15 at 15:22
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Does static constexpr variable inside a function make sense?
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Might also be useful to mention compile time constants vs runtime constants. In other words, if a constexpr constant variable is only used in compile-time contexts and never needed at runtime, then static makes no sense, since by the point you get to the runtime, the value has be...
Is .NET/Mono or Java the better choice for cross-platform development? [closed]
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I think the question is phrased incorrectly. C# vs. Java is much less interesting in terms of cross-platform usage than is (a) which platforms you need to support, and (b) considering the core libraries and available third party libraries. The language is almost the least ...
How do I put a bunch of uncommitted changes aside while working on something else
...ptions - it's one potential benefit is having two sets of code open in two VS instances, but I rarely have to do this so using clones as a matter of course doesn't serve me. Just for clarification, I wasn't the downvoter.
– Adam Houldsworth
Jul 17 '12 at 14:33
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Difference between shared objects (.so), static libraries (.a), and DLL's (.so)?
...rences between the two implementations that are related to the OS (Windows vs Linux) :
A DLL can define two kinds of functions: exported and internal. The exported functions are intended to be called by other modules, as well as from within the DLL where they are defined. Internal functions are ty...
Difference between timestamps with/without time zone in PostgreSQL
...nstruct is a brain teaser its own, even if you already understand the WITH vs. WITHOUT TIME ZONE types. So it's a curious choice for explaining them. (: (AT TIME ZONE converts a WITH TIME ZONE timestamp to a WITHOUT TIME ZONE timestamp, and vice versa... not exactly obvious.)
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How to validate an email address using a regular expression?
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community wiki
24 revs, 19 users 17%bortzmeyer
181
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When do we have to use copy constructors?
...+11 or newer
Declare the copy-constructor with =delete at end.
Shallow vs Deep Copy
This is the best understood case and actually the only one mentioned in the other answers. shaprtooth has covered it pretty well. I only want to add that deeply copying resources that should be exclusively owned...
Catching an exception while using a Python 'with' statement
...rint 'oops'
If you want different handling for errors from the open call vs the working code you could do:
try:
f = open('foo.txt')
except IOError:
print('error')
else:
with f:
print f.readlines()
sha...