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When should one use a spinlock instead of mutex?
...thing.
Here is equivalent question on competitor stackexchange unix site:
https://unix.stackexchange.com/questions/5107/why-are-spin-locks-good-choices-in-linux-kernel-design-instead-of-something-more
Info on dispatching on windows systems:
http://download.microsoft.com/download/e/b/a/eba1050f-a31...
How to check what user php is running as?
...s unlikely that your PHP process is running under anything but the default www-data or apache account.
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How to hash a password
...THIS ANSWER IS SERIOUSLY OUTDATED. Please use the recommendations from the https://stackoverflow.com/a/10402129/251311 instead.
You can either use
var md5 = new MD5CryptoServiceProvider();
var md5data = md5.ComputeHash(data);
or
var sha1 = new SHA1CryptoServiceProvider();
var sha1data = sha1.Co...
Difference between Hive internal tables and external tables?
...e HDFS file system.
(NOTE: See Section 'Managed and External Tables' in https://cwiki.apache.org/confluence/display/Hive/LanguageManual+DDL which list some other difference which I did not completely understand)
I believe Hive chooses the location where it needs to create the table based on the...
How can I limit possible inputs in a HTML5 “number” element?
...pt>
// This is an old version, for a more recent version look at
// https://jsfiddle.net/DRSDavidSoft/zb4ft1qq/2/
function maxLengthCheck(object)
{
if (object.value.length > object.maxLength)
object.value = object.value.slice(0, object.maxLength)
}
</script>
Update...
Floating point vs integer calculations on modern hardware
...e, lower is faster and preferable):
Update to accomodate @Peter Cordes
https://gist.github.com/Lewiscowles1986/90191c59c9aedf3d08bf0b129065cccc
i7 4700MQ Linux Ubuntu Xenial 64-bit (all patches to 2018-03-13 applied)
short add: 0.773049
short sub: 0.789793
short mul: 0.960152
s...
How to make a great R reproducible example
...ollowing in R:
install.packages("devtools")
library(devtools)
source_url("https://raw.github.com/rsaporta/pubR/gitbranch/reproduce.R")
reproduce(myData)
Details:
This function is an intelligent wrapper to dput and does the following:
automatically samples a large data set (based on size and...
Razor-based view doesn't see referenced assemblies
...
You seem to be looking for this answer:
https://stackoverflow.com/a/4136773/176877
That is, open the inner Views\Web.Config (NOT the root one), and add the namespace under the Pages tag:
<system.web.webPages.razor>
<host factoryType="System.Web.Mvc.Mvc...
How to center absolute div horizontally using CSS?
...] of the [right/left] edge of the box's containing block.
Source:
http://www.w3.org/TR/CSS2/visuren.html#position-props
Note: The element must have a width smaller than the window or else it will take up the entire width of the window.
If you could use media queries to specify a minimum m...
Why do you need to invoke an anonymous function on the same line?
...on.
(function (msg){alert(msg)})
('SO');
Above should work.
DEMO Page: https://jsfiddle.net/e7ooeq6m/
I have discussed this kind of pattern in this post:
jQuery and $ questions
EDIT:
If you look at ECMA script specification, there are 3 ways you can define a function. (Page 98, Section 13 Fu...