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Add column with number of days between dates in DataFrame pandas
...f['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 you're using a new of pandas (e.g. 0.13.1), this ma...
Rebasing and what does one mean by rebasing pushed commits
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answered Apr 26 '10 at 16:37
Tim HeniganTim Henigan
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Android emulator shows nothing except black screen and adb devices shows “device offline”
...n emulator comes up on the screen. But even after waiting for as long as 2-3 hrs, all it shows is a black screen. Not even the android home screen or the android logo. Just a black screen. And while initially "adb devices" shows the emulator as offline.after 2-3 minutes the list of attached devices ...
android button selector
...></item>
</selector>
In this, you can see that there are 3 drawables, you just need to place this button_effect style to your button, as i wrote above. You just need to replace selector_xml_name with button_effect.
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In HTML5, should the main navigation be inside or outside the element?
...e."?
– Matthew Rankin
Feb 2 '11 at 13:22
7
@Matthew because the nav element is for navigation aro...
How does Duff's device work?
... // Set to 20
{
int n = (count + 7) / 8; // n is now 3. (The "while" is going
// to be run three times.)
switch (count % 8) { // The remainder is 4 (20 modulo 8) so
// jump to the ca...
Android customized button; changing text color
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edited Mar 16 '18 at 13:34
ZooMagic
45766 silver badges1212 bronze badges
answered Jan 14 '11 at 15:...
Difference between git pull and git pull --rebase
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338
git pull = git fetch + git merge against tracking upstream branch
git pull --rebase = git fet...
What does `someObject.new` do in Java?
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edited Jul 17 '13 at 22:15
JayQuerie.com
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