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Remove all the elements that occur in one list from another
...tor isn't that efficient on a list. in on a list is O(n), whereas in on a set is O(1). However, until you get to thousands of elements or more, you're unlikely to notice the difference.
– Daniel Pryden
Nov 18 '10 at 3:10
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dropping infinite values from dataframes in pandas?
...lest way to drop nan and inf/-inf values from a pandas DataFrame without resetting mode.use_inf_as_null ? I'd like to be able to use the subset and how arguments of dropna , except with inf values considered missing, like:
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How do I add a path to PYTHONPATH in virtualenv
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@ForeverWintr I stand corrected - .pth files are used to setup sys.path. docs.python.org/2/library/site.html Confused.com!
– ostergaard
Oct 3 '16 at 18:05
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unix - head AND tail of file
Say you have a txt file, what is the command to view the top 10 lines and bottom 10 lines of file simultaneously?
20 Answer...
Mechanisms for tracking DB schema changes [closed]
...te an empty database for automated testing.
It took only a few hours to set up this system, it's conceptually simple and everyone gets the version numbering scheme, and it has been invaluable in having the ability to move forward and evolving the database design, without having to communicate or ...
How can I position my div at the bottom of its container?
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Nice! Just a note, IIRC you need the <!DOCTYPE> set in order for this to work on IE (<= 8 at least); those older versions only support display:table-XXX in "standards" mode. But standards mode will also break a lot of pages that were designed for, say, IE6.
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Parsing XML with namespace in Python via 'ElementTree'
I have the following XML which I want to parse using Python's ElementTree :
6 Answers
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How can one close HTML tags in Vim quickly?
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Check this out..
closetag.vim
Functions and mappings to close open HTML/XML tags
https://www.vim.org/scripts/script.php?script_id=13
I use something similar.
share
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How to set HTTP headers (for cache-control)?
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You can set the headers in PHP by using:
<?php
//set headers to NOT cache a page
header("Cache-Control: no-cache, must-revalidate"); //HTTP 1.1
header("Pragma: no-cache"); //HTTP 1.0
header("Expires: Sat, 26 Jul 1997 05:0...
How to create a drop shadow only on one side of an element?
...ositioning and the second value controls the vertical positioning. So just set the first value to 0px and the second to whatever offset you'd like as follows:
-webkit-box-shadow: 0px 5px #000000;
-moz-box-shadow: 0px 5px #000000;
box-shadow: 0px 5px #000000;
For more info on box shadow...