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Applying function with multiple arguments to create a new pandas column
...n:
>>> import numpy as np
>>> df = pd.DataFrame({"A": [10,20,30], "B": [20, 30, 10]})
>>> df['new_column'] = np.multiply(df['A'], df['B'])
>>> df
A B new_column
0 10 20 200
1 20 30 600
2 30 10 300
or vectorize arbitrary func...
grep output to show only matching file
...
answered Oct 11 '10 at 16:37
a'ra'r
31k66 gold badges6060 silver badges6363 bronze badges
...
Node JS Error: ENOENT
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ihciadihciad
90766 silver badges33 bronze badges
5
...
Adding Http Headers to HttpClient
... |
edited Nov 7 '19 at 10:17
Massimiliano Kraus
3,06344 gold badges1919 silver badges3636 bronze badges
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How do you generate dynamic (parameterized) unit tests in python?
... self.assertEqual(a,b)
Which will generate the tests:
test_sequence_0_foo (__main__.TestSequence) ... ok
test_sequence_1_bar (__main__.TestSequence) ... FAIL
test_sequence_2_lee (__main__.TestSequence) ... ok
======================================================================
FAIL: test_s...
How would you make two s overlap?
...
90
I might approach it like so (CSS and HTML):
html,
body {
margin: 0px;
}
#logo {
p...
C++ 读写xml方法整理（持续更新） - C/C++ - 清泛网 - 专注C/C++及内核技术
...巧，直接加入工程源码编译，只支持MFC。
<?xml version="1.0" encoding="utf-8"?>
<root>
<update ver="1.2.0" pkg="setup.exe" force="1"/>
<update ver="1.1.1" pkg="setup.exe" force="0"/>
<update ver="1.1.0" pkg="setup.exe" force="0"/>
</root>
CMarkup markup;
bool bSucceed = ...
$(this) inside of AJAX success not working
...und to. Learn more about how this works in JavaScript.
Solutions
If ES2015+ is available to you, then using an arrow function would probably be the simplest option:
$.ajax({
//...
success: (json) => {
// `this` refers to whatever `this` refers to outside the function
}
}...
Multiline syntax for piping a heredoc; is this portable?
...
105
Yes, the POSIX standard allows this. According to the 2008 version:
The here-document shal...
With CSS, use “…” for overflowed block of multi-lines
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Milan Jaros
1,0171414 silver badges1818 bronze badges
answered Jun 3 '11 at 5:22
Jim ThomasJim Thomas
...