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Create an index on a huge MySQL production table without table locking
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[2017] Update: MySQL 5.6 has support for online index updates
https://dev.mysql.com/doc/refman/8.0/en/innodb-online-ddl-operations.html#online-ddl-index-syntax-notes
In MySQL 5.6 and higher, the table remains available for read and write operations while the index is being created o...
JavaScript: Get image dimensions
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This uses the function and waits for it to complete.
http://jsfiddle.net/SN2t6/118/
function getMeta(url){
var r = $.Deferred();
$('<img/>').attr('src', url).load(function(){
var s = {w:this.width, h:this.height};
r.resolve(s)
});
return r;
}
getMet...
What’s the best RESTful method to return total number of items in an object?
...ample of that same design. Here's the documentation for the Users method - https://api.stackexchange.com/docs/users
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How to prevent Browser cache for php site
...if you want to control it through HTML: do like below Option 1:
<meta http-equiv="expires" content="Sun, 01 Jan 2014 00:00:00 GMT"/>
<meta http-equiv="pragma" content="no-cache" />
And if you want to control it through PHP: do it like below Option 2:
header('Expires: Sun, 01 Jan 201...
400 BAD request HTTP error code meaning?
I have a JSON request which I'm posting to a HTTP URL.
8 Answers
8
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How to shut down the computer from C#
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This thread provides the code necessary: http://bytes.com/forum/thread251367.html
but here's the relevant code:
using System.Runtime.InteropServices;
[StructLayout(LayoutKind.Sequential, Pack=1)]
internal struct TokPriv1Luid
{
public int Count;
public lon...
.htaccess redirect all pages to new domain
...his:
Options +FollowSymLinks
RewriteEngine On
RewriteBase /
RewriteCond %{HTTP_HOST} ^OLDDOMAIN\.com$ [NC]
RewriteRule ^(.*)$ http://NEWDOMAIN.com [R=301,L]
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Sending mail from Python using SMTP
...mtp connection 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...
what’s the difference between Expires and Cache-Control headers?
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Cache-Control was introduced in HTTP/1.1 and offers more options than Expires. They can be used to accomplish the same thing but the data value for Expires is an HTTP date whereas Cache-Control max-age lets you specify a relative amount of time so you coul...
SQL Server: Filter output of sp_who2
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based on http://web.archive.org/web/20080218124946/http://sqlserver2005.databases.aspfaq.com/how-do-i-mimic-sp-who2.html
i have created following script , which resolves finding active connections to any datbase using DMV this works ...