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What are the differences between NP, NP-Complete and NP-Hard?
... the technical definitions require quite some time to understand. First of all, let's remember a preliminary needed concept to understand those definitions.
Decision problem: A problem with a yes or no answer.
Now, let us define those complexity classes.
P
P is a complexity class that repres...
Has anyone used Coffeescript for a production application? [closed]
... etc.).
The cons are almost zero for me. The primary one is that it's an extra layer to debug. You will need to look at the generated JS (which is VERY readable and nice), and then map that to your Coffeescript code. For us, this hasn't been an issue at all, but YMMV.
In the end, my take is, th...
How to set up a Subversion (SVN) server on GNU/Linux - Ubuntu [closed]
...ired modules:
sudo apt-get install libapache2-svn apache2
The following extra packages will be installed:
apache2-mpm-worker apache2-utils apache2.2-common
2: Enable SSL
sudo a2enmod ssl
sudo kate /etc/apache2/ports.conf
Add or check that the following is in the file:
<IfModule mod_ssl....
Where to define custom error types in Ruby and/or Rails?
...
Some heirarchy can be helpful - namespaces are good at keeping redundant strings out of type names - but that's more a matter of taste - there's no need to go overboard provided you have at least one custom exception type in your app which you use throughout to differentiate between 'intentional' ...
Detect if the app was launched/opened from a push notification
... dictionary has the data you expect
if let type = userInfo["type"] as? String where type == "status" {
// IF the wakeTime is less than 1/10 of a second, then we got here by tapping a notification
if application.applicationState != UIApplicationState.Background && NSDate().tim...
How do I read an attribute on a class at runtime?
...
public string GetDomainName<T>()
{
var dnAttribute = typeof(T).GetCustomAttributes(
typeof(DomainNameAttribute), true
).FirstOrDefault() as DomainNameAttribute;
if (dnAttribute != null)
{
return...
Django: Get list of model fields?
...s which (ultimately) inherits from models.Model . I want to get a list of all the fields defined for this model. For example, phone_number = CharField(max_length=20) . Basically, I want to retrieve anything that inherits from the Field class.
...
How to right align widget in horizontal linear layout Android?
...elp from this other view? And how is it "right", if it is not, without the extra view?
– afrish
Oct 18 '14 at 15:48
...
Rails extending ActiveRecord::Base
...onkey patching is easy and quick. But, the time and effort saved is always extracted back
sometime in the future; with compound interest. These days I limit monkey patching to quickly prototype a solution in the rails console.
...
How do I format a date in Jinja2?
...er is called many times in the templates, this avoids repeating the format string, and can result into writting less code. And even more important, less repeated code, by adding an abstration.
– jacquev6
Jun 4 '18 at 8:59
...