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How do I automatically sort a has_many relationship in Rails?
...hem too.
@article.comments.find(:all, :order => "created_at DESC")
http://api.rubyonrails.org/classes/ActiveRecord/Associations/ClassMethods.html
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How can I link to a specific glibc version?
...t, or using a glibc-new => glibc-old cross-compiler.
According to the http://www.trevorpounds.com blog post Linking to Older Versioned Symbols (glibc), it is possible to to force any symbol to be linked against an older one so long as it is valid by using the the same .symver pseudo-op that is ...
Process all arguments except the first one (in a bash script)
...
http://wiki.bash-hackers.org/scripting/posparams
It explains the use of shift (if you want to discard the first N parameters) and then implementing Mass Usage
...
How to deploy an ASP.NET Application with zero downtime
... the IIS metabase:
for an existing path/url:
path: \web\app\v2.0\
url: http://app
Copy new (or modified) website to server under
\web\app\v2.1\
Modify IIS metabase to change the website path
from \web\app\2.0\
to \web\app\v2.1\
This method offers the following benefits:
In the event n...
Why are my basic Heroku apps taking two seconds to load?
...ut Tom Robinson's answer to "Scalability: How Does Heroku Work?" on Quora: http://www.quora.com/Scalability/How-does-Heroku-work
Heroku divides up server resources among many different customers/applications. Your app is allotted blocks of computing power. Heroku partitions based on resource demand...
Exit a Script On Error
...
Are you looking for exit?
This is the best bash guide around.
http://tldp.org/LDP/abs/html/
In context:
if jarsigner -verbose -keystore $keyst -keystore $pass $jar_file $kalias
then
echo $jar_file signed sucessfully
else
echo ERROR: Failed to sign $jar_file. Please recheck the...
Maven command to list lifecycle phases along with bound goals?
...on);
}
Look at full source.
Already implemented in:
http://marketplace.eclipse.org/content/phases-and-goals
It makes use of m2e's ability to compute the association of goals with phases. I am also trying to solve it at maven level.
...
How can I hash a password in Java?
...urrently by multiple threads.
*
* @author erickson
* @see <a href="http://stackoverflow.com/a/2861125/3474">StackOverflow</a>
*/
public final class PasswordAuthentication
{
/**
* Each token produced by this class uses this identifier as a prefix.
*/
public static final S...
Coloring white space in git-diff's output
...ttings from Mark's answer. Credit for this method goes to Junio's post at http://git.661346.n2.nabble.com/Highlighting-whitespace-on-removal-with-git-diff-td5653205.html .)
For example, when converting a file from DOS line endings to Unix, git diff -R clearly shows me the ^M characters (dis)appear...
Does “display:none” prevent an image from loading?
...0 does not load images if the parent is hidden.
You may check it there : http://jsfiddle.net/tnk3j08s/
You could also have checked it by looking at the "network" tab of your browser's developer tools.
Note that if the browser is on a small CPU computer, not having to render the image (and layout...