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What is a columnar database?
...peration will be expensive compared to row oriented databases.
For more: https://en.wikipedia.org/wiki/Column-oriented_DBMS
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What is the purpose of base 64 encoding and why it used in HTTP Basic Authentication?
...intable (text) characters.
See this paragraph from the wikipedia page for HTTP Basic Authentication:
While encoding the user name and password with the Base64 algorithm typically makes them unreadable by the naked eye, they are as easily decoded as they are encoded. Security is not the intent o...
Matching an empty input box using CSS
...ed border only if the input is empty */
}
More info and browser support: https://css-tricks.com/almanac/selectors/p/placeholder-shown/
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How to make a python, command-line program autocomplete arbitrary things NOT interpreter
...eters import ChoicesCompleter
parser.add_argument("--protocol", choices=('http', 'https', 'ssh', 'rsync', 'wss'))
parser.add_argument("--proto").completer=ChoicesCompleter(('http', 'https', 'ssh', 'rsync', 'wss'))
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How do I get the APK of an installed app without root access?
... Settings >
Applications > Development and enable USB debugging, see
http://developer.android.com/tools/device.html
In Eclipse, open DDMS-window: Window > Open Perspective > Other... >
DDMS, see http://developer.android.com/tools/debugging/ddms.html
If you can't see your device try (r...
What's the purpose of git-mv?
...ger that link is dead. Here's a mirror: web.archive.org/web/20150209075907/http://…
– Carl Walsh
Nov 14 '17 at 7:33
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Is there a naming convention for Django apps
...
My votes for 1 and 3, but you can check several popular apps:
http://www.django-cms.org/
http://geodjango.org/
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Is there a way to cache GitHub credentials for pushing commits?
I recently switched to synchronizing my repositories to https:// on GitHub (due to firewall issues), and it asks for a password every time.
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How can I set a website image that will show as preview on Facebook?
... Graph XML namespace extension to your HTML declaration
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:fb="http://ogp.me/ns/fb#">
2. Inside your <head></head> use the following meta tag to define the image you want to use
<meta property="og:image" content="fully_qu...
What is content-type and datatype in an AJAX request?
...framework is, but in C# on ASP.NET MVC it would be something as simple as [HttpPost]public JsonResult user(Person postedPerson) { /* Save postedPerson to DB */ return Json(new { success = true }); }
– Joe Enos
Sep 9 '13 at 15:28
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