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How to drop rows of Pandas DataFrame whose value in a certain column is NaN
...p://pandas.pydata.org/pandas-docs/stable/generated/pandas.DataFrame.dropna.html), including dropping columns instead of rows.
Pretty handy!
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How can I avoid running ActiveRecord callbacks?
...(attributes)
http://api.rubyonrails.org/classes/ActiveRecord/Persistence.html#method-i-update_column
#2: Skipping callbacks that also works while creating an object
class Person < ActiveRecord::Base
attr_accessor :skip_some_callbacks
before_validation :do_something
after_validation :do...
Is #pragma once a safe include guard?
...guard macro optimization: gcc.gnu.org/onlinedocs/cppinternals/Guard-Macros.html
– Adrian
May 17 '11 at 15:31
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'console' is undefined error for Internet Explorer
...undefined console.debug (and other missing methods).
EDIT: I noticed that HTML5 Boilerplate uses similar code in its js/plugins.js file, if you're looking for a solution that will (probably) be kept up-to-date.
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Comparing two dataframes and getting the differences
... pd.concat(), here's the docs pandas.pydata.org/pandas-docs/stable/merging.html
– Thanos
Apr 17 '16 at 18:35
what is t...
Javascript AES encryption [closed]
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I see one valid use-case - HTML 5 app in which all files are stored localy. If local files can be hijacked then your doomed in any case ;-).
– Nux
Jan 9 '12 at 23:18
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Sending mail from Python using SMTP
...D_INTERNET_SERVICE_PROVIDER"
# typical values for text_subtype are plain, html, xml
text_subtype = 'plain'
content="""\
Test message
"""
subject="Sent from Python"
import sys
import os
import re
from smtplib import SMTP_SSL as SMTP # this invokes the secure SMTP protocol (port 465, uses ...
How to emulate GPS location in the Android Emulator?
... site useful for finding a realistic lat/lng: http://itouchmap.com/latlong.html
If you need more then one coordinate you can use a kml file with a route as well it is a little bit described in this article. I can't find a better source at the moment.
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Connection pooling options with JDBC: DBCP vs C3P0
...ogs.nyu.edu/blogs/nrm216/sakaidelic/2007/12/difference_between_dbcp_and_c3.html
See also the like to the JavaTech article "Connection Pool Showdown" in the comments on the blog post.
Is there an API to get bank transaction and bank balance? [closed]
... to their API as an indy dev. solutions.yodlee.com/APIDeveloperInquiryForm.html
– JT Turner
Nov 24 '15 at 22:59
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