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Access Control Request Headers, is added to header in AJAX request with jQuery
...ctual request; note that the HTTP method is OPTIONS, not POST. It was actually the 'pre-flight' request that the browser makes to determine whether a cross-domain AJAX request should be allowed:
http://www.w3.org/TR/cors/
The Access-Control-Request-Headers header in the pre-flight request include...
How to reload apache configuration for a site without restarting apache
I have edited the variable AllowOverride for one of my websites in sites-enabled directory. How do I reload the new configuration without restarting apache? Is it possible?
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Is there a timeout for idle PostgreSQL connections?
...th <idle> in transaction sessions, but with too many connections overall.
Killing connections is not the right answer for that, but it's an OK-ish temporary workaround.
Rather than re-starting PostgreSQL to boot all other connections off a PostgreSQL database, see: How do I detach all other ...
Copy constructor versus Clone()
...r specified whether the Clone() method on ICloneable should be a deep or shallow clone, thus the interface is semantically broken as your callers won't know whether the call will deep or shallow clone the object.
Instead, you should define your own IDeepCloneable (and IShallowCloneable) interfaces ...
Bubble Sort Homework
...cient or readable.
In the for loop, you use the variable element. Technically, element is not an element; it's a number representing a list index. Also, it's quite long. In these cases, just use a temporary variable name, like i for "index".
for i in range(0, length):
The range command can also ...
Long-lasting FB access-token for server to pull FB page info
... not expire (with help from @Igy), here is a clear, step-by-step quide for all those looking to the same:
Make sure you are the admin of the FB page you wish to pull info from
Create a FB App (should be with the same user account that is the page admin)
Head over to the Facebook Graph API Explorer...
What's the difference between the four File Results in ASP.NET MVC
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FileResult is an abstract base class for all the others.
FileContentResult - you use it when you have a byte array you would like to return as a file
FilePathResult - when you have a file on disk and would like to return its content (you give a path)
FileStreamRes...
Does PHP have threading?
I found this PECL package called threads , but there is not a release yet. And nothing is coming up on the PHP website.
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What is the difference between 'git pull' and 'git fetch'?
...g your working copy. I have even heard of people running git fetch periodically in a cron job in the background (although I wouldn't recommend doing this).
A git pull is what you would do to bring a local branch up-to-date with its remote version, while also updating your other remote-tracking branc...
How to read the mode field of git-ls-tree's output
...ing 0 on the top lines (e.g. 0170000 instead of 170000), since it is 0 for all lines, why not just omit it?
– Ciro Santilli 郝海东冠状病六四事件法轮功
Aug 22 '14 at 7:47
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