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Why does .NET foreach loop throw NullRefException when collection is null?
...the answer might be obvious to some people, it is not obvious to everyone, and providing the hint that looking at the IL will tell you what the compiler is doing, helps people fish for themselves in the future.
– Robaticus
May 10 '17 at 23:36
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How can I remove a pytz timezone from a datetime object?
...you are using a library like arrow, then you can remove timezone by simply converting an arrow object to to a datetime object, then doing the same thing as the example above.
# <Arrow [2014-10-09T10:56:09.347444-07:00]>
arrowObj = arrow.get('2014-10-09T10:56:09.347444-07:00')
# datetime.date...
How to throw an exception in C?
...tion (or other notification error form the CPU if there is)(How processor handles the case of division by zero).
Exceptions are defined in C++ and other languages though. Exception handling in C++ is specified in the C++ standard "S.15 Exception handling", there is no equivalent section in the C st...
How do I handle ImeOptions' done button click?
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I ended up with a combination of Roberts and chirags answers:
((EditText)findViewById(R.id.search_field)).setOnEditorActionListener(
new EditText.OnEditorActionListener() {
@Override
public boolean onEditorAction(TextView v, int actionId, KeyEvent e...
What is uint_fast32_t and why should it be used instead of the regular int and uint32_t?
...pedef :ed primitive data types is to abstract the low-level representation and make it easier to comprehend ( uint64_t instead of long long type, which is 8 bytes).
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In C++, what is a “namespace alias”?
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To possibly explain the downvotes, SO is not and never will be a replacement forv a good C++ textbook. The question you posed will be answered by any such book. And the SO "feature" of answering your own questions should not be used to provide paraphrases of such books....
Java Reflection: How to get the name of a variable?
... class files. One compile-time optimization is to remove it, saving space (and providing some obsfuscation). However, when it is is present, each method has a local variable table attribute that lists the type and name of local variables, and the range of instructions where they are in scope.
Perha...
In Python, using argparse, allow only positive integers
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type would be the recommended option to handle conditions/checks, as in Yuushi's answer.
In your specific case, you can also use the choices parameter if your upper limit is also known:
parser.add_argument('foo', type=int, choices=xrange(5, 10))
Note: Use range ...
How can I use “sizeof” in a preprocessor macro?
... ((void)sizeof(... it errors with expected identifier or '(' before 'void' and expected ')' before 'sizeof'. But in principle size_t x = (sizeof(... instead does work as intended. You have to "use" the result, somehow. To allow for this to be called multiple times either inside a function or at gl...
In Visual Studio C++, what are the memory allocation representations?
In Visual Studio, we've all had "baadf00d", have seen seen "CC" and "CD" when inspecting variables in the debugger in C++ during run-time.
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