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How to “EXPIRE” the “HSET” child key in redis?
...those keys to fall in the same hash slot. You can read more about it here: https://redis.io/topics/cluster-tutorial
Now if we want to do the same operation of hashes, we could do:
HDEL hash_top_key child_key_1 => DEL {hash_top_key}child_key_1
HGET hash_top_key child_key_1 => GET {hash_top_k...
How can one display images side by side in a GitHub README.md?
...olarized Ocean
:-------------------------:|:-------------------------:
 | 
This creates a table with Solarized Dark and Ocean as headers and then contains the images in the first row. Obviously you would replace the ... with the real link. The :s ...
Sending mail from Python using SMTP
...nection to send mail, I rely on the smtplib module (downloadable at http://www1.cs.columbia.edu/~db2501/ssmtplib.py)
As in your script, the username and password, (given dummy values below), used to authenticate on the SMTP server, are in plain text in the source. This is a security weakness; but t...
Java Embedded Databases Comparison [closed]
...eed.
The developer of H2 has put up a nice performance evaluation:
http://www.h2database.com/html/performance.html
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Using sed to mass rename files
...ost with examples on batch renaming using sed couple of years ago:
http://www.guyrutenberg.com/2009/01/12/batch-renaming-using-sed/
For example:
for i in *; do
mv "$i" "`echo $i | sed "s/regex/replace_text/"`";
done
If the regex contains groups (e.g. \(subregex\) then you can use them in the ...
How do I override nested NPM dependency versions?
...ld automatically pick it up while doing the install for the project.
(See: https://nodejs.org/en/blog/npm/managing-node-js-dependencies-with-shrinkwrap/)
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Is it correct to use DIV inside FORM?
...strict mode:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<META http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>Test</title>
</head>
<body>
<form id="test" action="te...
can we use xpath with BeautifulSoup?
... from urllib.request import urlopen
from lxml import etree
url = "http://www.example.com/servlet/av/ResultTemplate=AVResult.html"
response = urlopen(url)
htmlparser = etree.HTMLParser()
tree = etree.parse(response, htmlparser)
tree.xpath(xpathselector)
There is also a dedicated lxml.html() modul...
What is the facade design pattern?
...ls of the subsystems, making it easier to modify the system later.
http://www.dofactory.com/Patterns/PatternFacade.aspx
http://www.blackwasp.co.uk/Facade.aspx
Also, what is important while learning design patterns is to be able to recognize which pattern fits your given problem and then using it ...
Conveniently map between enum and int / String
...
http://www.javaspecialists.co.za/archive/Issue113.html
The solution starts out similar to yours with an int value as part of the enum definition. He then goes on to create a generics-based lookup utility:
public class ReverseEnum...