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Find row where values for column is maximal in a pandas DataFrame
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Use the pandas idxmax function. It's straightforward:
>>> import pandas
>>> import numpy as np
>>> df = pandas.DataFrame(np.random.randn(5,3),columns=['A','B','C'])
>>> df
A B ...
Find out what process registered a global hotkey? (Windows API)
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Your question piqued my interest, so I've done a bit of digging and while, unfortunately I don't have a proper answer for you, I thought I'd share what I have.
I found this example of creating keyboard hook (in Delphi) written in 1998, but is compilable in Delphi 2007 with a couple of tw...
What does a \ (backslash) do in PHP (5.3+)?
...mbol is used in namespaces. It is the start symbol to indicate a namespace and also serves as a separator between sub-namespace names.
See official documentation about
namespacing.
Opcache
Additionally in PHP 7.0+ some functions are replaced with opcodes by OPCache, which makes these specific fu...
Easiest way to detect Internet connection on iOS?
...wever, I don't feel the simple case is well explained here. Coming from an Android and BlackBerry background, making requests through HTTPUrlConnection instantly fail if there is no connection available. This seems like completely sane behavior, and I was surprised to find NSURLConnection in iOS...
Prevent ViewPager from destroying off-screen views
...2, so that when you are on the third page, the first one is not destroyed, and vice-versa.
mViewPager = (ViewPager)findViewById(R.id.pager);
mViewPager.setOffscreenPageLimit(2);
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How do I append one string to another in Python?
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If you only have one reference to a string and you concatenate another string to the end, CPython now special cases this and tries to extend the string in place.
The end result is that the operation is amortized O(n).
e.g.
s = ""
for i in range(n):
s+=str(i)
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Difference between @OneToMany and @ElementCollection?
What is the difference between using a @OneToMany and @ElementCollection annotation since both work on the one-to-many relationship?
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In C++, what is a virtual base class?
I want to know what a " virtual base class " is and what it means.
11 Answers
11
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Best way to work with transactions in MS SQL Server Management Studio
Let's say I have an SQL statement that's syntactically and semantically correct so it executes.
2 Answers
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Useful example of a shutdown hook in Java?
...ying to make sure my Java application takes reasonable steps to be robust, and part of that involves shutting down gracefully. I am reading about shutdown hooks and I don't actually get how to make use of them in practice.
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