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how to check the dtype of a column in python pandas
...('<M8[ns]'), 'is_int64 = False')
It will be misleading in the case of mixed type of data in single column:
df2 = pd.DataFrame({'data': [12, pd.Timestamp('2013-01-02')]},
index = ['A', 'B'])
for col in df2.columns:
df2[col].dtype, 'is_int64 = %s' % isinstance(df2.loc['A', ...
How do I install a module globally using npm?
... new -g flag, for example:
npm install forever -g
The general recommendations concerning npm module installation since 1.0rc (taken from blog.nodejs.org):
If you’re installing something that you want to use in your program, using
require('whatever'), then install it
locally, at the ro...
How do I undo the most recent local commits in Git?
...In which case, it's better no leave out the --soft (which will result in --mixed which is the default) and then you can restage the changes you meant to commit.
– dmansfield
Jul 2 '14 at 21:19
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Returning an array using C
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Object oriented-esk prepossessing mix-mash. I like it.
– Jack Giffin
Jan 22 '18 at 3:24
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What is the python “with” statement designed for?
...y add it for the sake of completeness: the with statement simplifies exception handling by encapsulating common preparation and cleanup tasks in so-called context managers. More details can be found in PEP 343. For instance, the open statement is a context manager in itself, which lets you open a fi...
lock(new object()) — Cargo cult or some crazy “language special case”?
...n once at a time
// e.g. comands on the Mars Rover, or programs on iOS pre 4 / 5 ??
}
}
and thought he could cut the number of lines.
I'd be very worried if that were the case though...
share
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Securely storing environment variables in GAE with app.yaml
...et my head around it, but I think this is the correct approach. You're not mixing application settings (app.yaml) with secret keys and confidential information, and what I really like is that you're using the Google workflow to accomplish the task. Thanks @GwynHowell. =)
– Ben
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How to apply an XSLT Stylesheet in C#
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I prefer this solution instead of the overloaded version because you are able to set XmlReaderSettings and XmlWriterSettings using DTD, Schemas, etc.
– Alina B.
Oct 11 '14 at 6:09
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Has anyone actually implemented a Fibonacci-Heap efficiently?
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The Boost C++ libraries include an implementation of Fibonacci heaps in boost/pending/fibonacci_heap.hpp. This file has apparently been in pending/ for years and by my projections will never be accepted. Also, there have been bugs in that implementation, which were fix...
When to use NSInteger vs. int
When should I be using NSInteger vs. int when developing for iOS? I see in the Apple sample code they use NSInteger (or NSUInteger ) when passing a value as an argument to a function or returning a value from a function.
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