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What is a regular expression which will match a valid domain name without a subdomain?
...t Guide for more information.
Feel free to try out the regex here: http://www.regexr.com/3abjr
ICANN keeps a list of tlds that have been delegated which can be used to see some examples of IDN domains.
Edit:
^(((?!-))(xn--|_{1,1})?[a-z0-9-]{0,61}[a-z0-9]{1,1}\.)*(xn--)?([a-z0-9][a-z0-9\-]{0,6...
How can you customize the numbers in an ordered list?
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title> new document </title>
<style type="text/css">
<!--
ol {
counter-reset: item;
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What is the most efficient way to store tags in a database?
...tle:text[]
For more info, see this excellent post by Josh Berkus:
http://www.databasesoup.com/2015/01/tag-all-things.html
There are more various options compared thoroughly for performance and the one suggested above is the best overall.
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Asynchronous shell exec in PHP
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if the user you run apache (usually www-data) doesn't have the permissions to use at and you can't configure it to, you can try to use <?php exec('sudo sh -c "echo \"command\" | at now" '); If command contains quotes, see escapeshellarg to save you headaches...
Creating a simple XML file using python
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Yattag http://www.yattag.org/ or https://github.com/leforestier/yattag provides an interesting API to create such XML document (and also HTML documents).
It's using context manager and with keyword.
from yattag import Doc, indent
doc, t...
Regular Expression for alphanumeric and underscores
...ppreciate the readability of the full POSIX character class names ( http://www.zytrax.com/tech/web/regex.htm#special ), so I'd say:
^[[:alnum:]_]+$
However, while the documentation at the above links states that \w will "Match any character in the range 0 - 9, A - Z and a - z (equivalent of POSI...
How to do a PUT request with curl?
...ple PUT following Martin C. Martin's comment:
curl -T filename.txt http://www.example.com/dir/
With -T (same as --upload-file) curl will use PUT for HTTP.
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Alternative to itoa() for converting integer to string C++? [duplicate]
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net.pku.edu.cn/~course/cs101/resource/www.cppreference.com/…
– spoulson
Oct 24 '08 at 17:30
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MySQL Multiple Joins in one query?
...tables one after the other.
See this link explaining the process:
https://www.interfacett.com/blogs/multiple-joins-work-just-like-single-joins/
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'float' vs. 'double' precision
... is why the precision is more than doubled.
1: Section 5.2.4.2.2 ( http://www.open-std.org/jtc1/sc22/wg14/www/docs/n1256.pdf )
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