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How do I get the row count of a pandas DataFrame?
...g",
setup=lambda n: pd.DataFrame(np.arange(n * 3).reshape(n, 3)),
n_range=[2**k for k in range(25)],
kernels=[
lambda data: data.shape[0],
lambda data: data[0].count(),
lambda data: len(data.index),
],
labels=["data.shape[0]", "data[0].count()", "len(data....
How to get one value at a time from a generator function in Python?
...en by subclassing. In Python 3, however, this function has been renamed to __next__(), to be consistent with other special functions.
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Conditional import of modules in Python
...ad of relying on the user; here's pySerial doing it as an example.
serial/__init__.py
import sys
if sys.platform == 'cli':
from serial.serialcli import Serial
else:
import os
# chose an implementation, depending on os
if os.name == 'nt': # sys.platform == 'win32':
from se...
What is a callback function?
...ant is to be able to call factorial in the following way:
factorial(really_big_number, what_to_do_with_the_result)
The second parameter, what_to_do_with_the_result, is a function you send along to factorial, in the hope that factorial will call it on its result before returning.
Yes, this means...
Can I use git diff on untracked files?
...es by simply supplying the path to both files.
git diff --no-index tracked_file untracked_file
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How can I bind to the change event of a textarea in jQuery?
...ge' to 'input change' so that it works in IE9 as well. paulbakaus.com/2012/06/14/propertychange-on-internet-explorer-9
– c0D3l0g1c
Apr 11 '14 at 13:06
11
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SVN Error - Not a working copy
...ch worked for the OP) didn't fix it. Here's what I did:
$ mv papers papers_
$ svn cleanup
$ svn revert papers
Reverted 'papers'
$ mv papers_/ papers
$ svn add papers
That worked.
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Reload an iframe with jQuery
...
This Jquery worked like a charm for me: $('#map_iframe').attr('src', $('#map_iframe').attr('src'));
– Topher Hunt
Jul 1 '14 at 19:00
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...
How do I time a method's execution in Java?
...one place.
Date
Date startDate = Calendar.getInstance().getTime();
long d_StartTime = new Date().getTime();
Thread.sleep(1000 * 4);
Date endDate = Calendar.getInstance().getTime();
long d_endTime = new Date().getTime();
System.out.format("StartDate : %s, EndDate : %s \n", startDate, endDate);
Syst...
How can I list all tags in my Git repository by the date they were created?
...t 2.8 (March 2016) documents another option dating back to git 1.4.4 (Oct2006).
See commit e914ef0 (05 Jan 2016) by Eric Wong (ele828).
(Merged by Junio C Hamano -- gitster -- in commit 108cb77, 20 Jan 2016)
See the new Documentation/git-for-each-ref.txt
For commit and tag objects, the specia...