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How to Parse Command Line Arguments in C++? [duplicate]
...P::ArgException &e) // catch any exceptions
{ std::cerr << "error: " << e.error() << " for arg " << e.argId() << std::endl; }
}
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What is the difference between quiet NaN and signaling NaN?
...e exit status:
g++ -ggdb3 -O0 -Wall -Wextra -pthread -std=c++11 -pedantic-errors -o blow_up.out blow_up.cpp -lm -lrt
./blow_up.out
echo $?
Output:
FE_ALL_EXCEPT snan + 1.0f
feenableexcept qnan + 1.0f
Floating point exception (core dumped)
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Note that this behaviour only happens with -O0 in G...
Remove empty strings from a list of strings
I want to remove all empty strings from a list of strings in python.
12 Answers
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PowerShell and the -contains operator
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– Raúl Salinas-Monteagudo
Nov 14 '19 at 9:05
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In the shell, what does “ 2>&1 ” mean?
...iptor 1 is the standard output (stdout).
File descriptor 2 is the standard error (stderr).
Here is one way to remember this construct (although it is not entirely accurate): at first, 2>1 may look like a good way to redirect stderr to stdout. However, it will actually be interpreted as "redirect...
Does SQLAlchemy have an equivalent of Django's get_or_create?
... Look at Django's implementation of get_or_create. It checks for integrity error, and relies upon proper use of unique constraints.
– Ivan Virabyan
May 21 '12 at 6:17
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Titlecasing a string with exceptions
Is there a standard way in Python to titlecase a string (i.e. words start with uppercase characters, all remaining cased characters have lowercase) but leaving articles like and , in , and of lowercased?
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Tools for Generating Mock Data? [closed]
...ption). Moreover going for one of the demos (hsqldb) with maven results in errors as well. To me it seems like the tool not in a good shape, thus not worth loosing the time with it.
– Peter Butkovic
Nov 7 '13 at 9:11
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Can I have onScrollListener for a ScrollView?
I am using a HorizontalScrollView in a layout and I need to identify the user have reached the start and end point of the scroll.
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virtualenv --no-site-packages and pip still finding global packages?
I was under the impression that virtualenv --no-site-packages would create a completely separate and isolated Python environment, but it doesn't seem to.
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