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Underscore: sortBy() based on multiple attributes
...inds that John and Lisa have the same room number it will keep them in the order it found them, which the first sortBy set to "Lisa, John".
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foll...
Restarting cron after changing crontab file?
...u just want to make sure its done anyway,
sudo service cron reload
or
/etc/init.d/cron reload
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How to import an existing X.509 certificate and private key in Java keystore to use in SSL?
... Root CA Certificate is obtained by Tomcat from the
# JDK's truststore in /etc/pki/java/cacerts
# The non-APR HTTPS connector (APR uses OpenSSL-like configuration, much
# easier than this) in server.xml looks like this
# (See: https://tomcat.apache.org/tomcat-6.0-doc/ssl-howto.html):
#
# <Conn...
Using Pairs or 2-tuples in Java [duplicate]
...ions of how to design this class further regarding equality, immutability, etc., especially if you plan to use instances as keys for hashing.
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Automatically start forever (node) on system restart
...
This case is valid for Debian.
Add the following to /etc/rc.local
/usr/bin/sudo -u {{user}} /usr/local/bin/forever start {{app path}}
{{user}} replaces your username.
{{app path}} replaces your app path. For example, /var/www/test/app.js
...
How to combine multiple conditions to subset a data-frame using “OR”?
... I intended, since ...
> NA & 1
[1] NA
> 0 & NA
[1] FALSE
Order of arguments may matter when using '&".
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How do I check if a number evaluates to infinity?
...y that's an obscure case, and anyone who decides to redefine Infinity, NaN etc should expect odd things to happen.)
– LukeH
Jan 18 '11 at 13:49
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Explanation of strong and weak storage in iOS5
... all remaining weak pointers will be zeroed out.
Perhaps an example is in order.
Imagine our object is a dog, and that the dog wants to run away (be deallocated).
Strong pointers are like a leash on the dog. As long as you have the leash attached to the dog, the dog will not run away. If five peo...
Laravel orderBy on a relationship
...p
public function comments()
{
return $this->hasMany('Comment')->orderBy('column');
}
[edit after comment]
<?php
class User
{
public function comments()
{
return $this->hasMany('Comment');
}
}
class Controller
{
public function index()
{
$colum...
Difference between a user and a schema in Oracle?
...other stuff.
SYS is a schema that includes tons of tables, views, grants, etc etc etc.
SYSTEM is a schema.....
Technically -- A schema is the set of metadata (data dictionary) used by the database,
typically generated using DDL. A schema defines attributes of the database, such as
tables, colum...