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Which Java Collection should I use?
...ndex, you access them by their key, which is any object. Like the array in PHP :)
Data in Map are searchable by their key.
Typical operation: get an element by its ID (where ID is of any type, not only int as in case of List).
The differences
Set vs. Map: in Set you search data by themselves, whi...
Deny all, allow only one IP through htaccess
...intenance page can be shown to your users while you perform changes to the site:
ErrorDocument 403 /maintenance.html
Order Allow,Deny
Allow from #.#.#.#
Where:
#.#.#.# is your IP: What Is My IP Address?
For maintenance.html there is a nice example here: Simple Maintenance Page
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Is “for(;;)” faster than “while (TRUE)”? If not, why do people use it?
...loop condition to be a boolean, such as while (true) or while (1 == 1). In PHP, keywords are case-insensitive but the language prefers the capitalization TRUE.
However, for (;;) is always completely correct in all of those languages.
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How can I manually generate a .pyc file from a .py file
... be careful with this command. I did accidentally do a compileall on my site-packages folder and it messed up everything
– Alex
Jul 18 '18 at 11:29
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Maven error: Could not find or load main class org.codehaus.plexus.classworlds.launcher.Launcher
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Just had this happen to me. The website is unclear on which to use.
– frodo2975
Jul 8 '16 at 15:36
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Get average color of image via Javascript
...ogle it.
I have accomplished the above execution in RGB color space using PHP/GD here: https://gist.github.com/cf23f8bddb307ad4abd8
This however is very computationally expensive. It will crash your system on large images, and will definitely crash your browser if you try it in the client. I have ...
CryptographicException 'Keyset does not exist', but only through WCF
...key but i was getting this error("Keyset does not exist")
Cause: Your web site is running under "Network services" account or having less privileges.
Solution: Change Application pool identity to "Local System", reset IIS and check again.
If it starts working it is permission/Less privilege issue,...
Inspect hovered element in Chrome?
...o view, through Chrome's developer tools, how tooltips are structured on a site. However, even when I am hovered over the item, when I "inspect element", nothing shows for the tooltip in the html. I know I can set the Style to :hover , but I still can't see the html or css of the tooltip.
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TypeScript type signatures for functions with variable argument counts
...uses the ECMAScript 6 spread proposal,
http://wiki.ecmascript.org/doku.php?id=harmony:spread
but adds type annotations so this would look like,
interface Example {
func(...args: any[]): void;
}
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Remove unused references (!= “using”)
... used the "reference" to carry the assembly with you to the bin/production site, but there will be no code referencing it directly. USE WITH CARE!
– Casper Leon Nielsen
Feb 6 '13 at 14:39
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