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Add column with number of days between dates in DataFrame pandas
... datetime64[ns]
dtype: object
In [12]: df['A'] - df['B']
Out[12]:
one -58 days
two -26 days
dtype: timedelta64[ns]
In [13]: df['C'] = df['A'] - df['B']
In [14]: df
Out[14]:
A B C
one 2014-01-01 2014-02-28 -58 days
two 2014-02-03 2014-03-01 -26 days
Note: ensure...
How to migrate back from initial migration in Django 1.7?
... supervacuo
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answered Sep 1 '14 at 14:25
ChillarAnandChillarAnand
20.8k7...
D3.js: How to get the computed width and height for an arbitrary element?
...mething like selection.node().getBBox() you get values like
{
height: 5,
width: 5,
y: 50,
x: 20
}
For HTML elements
Use selection.node().getBoundingClientRect()
share
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impro...
C++ template typedef
...
565
C++11 added alias declarations, which are generalization of typedef, allowing templates:
temp...
Content Security Policy “data” not working for base64 Images in Chrome 28
...|
edited Dec 9 '16 at 10:25
Pang
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answered Au...
rails simple_form - hidden field - create?
...
5
This is the simple_form way to do hidden inputs, however, if only a hidden input is needed, then just use Rails' hidden_field form builder s...
Why does Bootstrap set the line-height property to 1.428571429?
... of a 14px font-size. The target line-height is 20px:
20px ÷ 14px = 1.428571429
When determining your line-height, you want to make sure you have ample white space between your rows. This allows for ascenders and descenders without intruding on other rows. Also having ample white space allows you...
How to instantiate non static inner class within a static method?
...
205
You have to have a reference to the other outer class as well.
Inner inner = new MyClass().new ...
How to format a float in javascript?
...t just 2 digits after the decimal point? For example, 0.34 instead of 0.3445434.
14 Answers
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