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Python argparse: default value or specified value
...ault to a value if only the flag is present with no value specified, but store a user-specified value instead of the default if the user specifies a value. Is there already an action available for this?
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How can I check whether a numpy array is empty or not?
How can I check whether a numpy array is empty or not?
4 Answers
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Difference between map, applymap and apply methods in Pandas
Can you tell me when to use these vectorization methods with basic examples?
10 Answers
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How do I use boolean variables in Perl?
... Empty scalar
() # Empty list
('')
The rest are true. There are no barewords for true or false.
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What does the servlet value signify
...are having a few servlets defined. Here is the excerpt from the web.xml for one of the servlets:
11 Answers
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How to recover stashed uncommitted changes
...hed them using git stash , but there were some changes which were very important among those stashed ones. Is there any way to get back those changes?
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What is thread safe or non-thread safe in PHP?
I saw different binaries for PHP, like non-thread or thread safe?
4 Answers
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Download a single folder or directory from a GitHub repo
How can I download only a specific folder or directory from a remote Git repo hosted on GitHub?
36 Answers
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Is it safe to check floating point values for equality to 0?
I know you can't rely on equality between double or decimal type values normally, but I'm wondering if 0 is a special case.
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What does (x ^ 0x1) != 0 mean?
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The XOR operation (x ^ 0x1) inverts bit 0. So the expression effectively means: if bit 0 of x is 0, or any other bit of x is 1, then the expression is true.
Conversely the expression is false if x == 1.
So the test is the same a...