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Android equivalent to NSNotificationCenter
In the process of porting an iPhone application over to android, I am looking for the best way to communicate within the app. Intents seem to be the way to go, is this the best (only) option? NSUserDefaults seems much lighter weight than Intents do in both performance and coding.
...
What are Long-Polling, Websockets, Server-Sent Events (SSE) and Comet?
...s prior to HTML5 which use streaming and long-polling to achieve real time applications. Read more on wikipedia or this article.
Now, which one of them should I use for a realtime app (that I need to
code). I have been hearing a lot about websockets (with socket.io [a
node.js library]) but...
How to customize user profile when using django-allauth
I have a django project with the django-allauth app. I need to collect additional data from the user at signup. I came across a similar question here but unfortunately, no one answered the profile customization part.
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Media Player called in state 0, error (-38,0)
I am currently trying to design a simple app that streams an internet radio station. I have the URL for the station and am setting up the Media Player like
...
How to get StackPanel's children to fill maximum space downward?
... the help that is available on the news screen."
TextWrapping="Wrap" />
</GroupBox>
<StackPanel DockPanel.Dock="Left" Margin="10"
Width="Auto" HorizontalAlignment="Stretch">
<TextBlock Text="Here is the news that should wrap aro...
How to implement a ConfigurationSection with a ConfigurationElementCollection
...e previous answer is correct but I'll give you all the code as well.
Your app.config should look like this:
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<configSections>
<section name="ServicesSection" type="RT.Core.Config.ServiceConfigurationSection, RT.Co...
How to check if APK is signed or “debug build”?
...
There are different way to check if the application is build using debug or release certificate, but the following way seems best to me.
According to the info in Android documentation Signing Your Application, debug key contain following subject distinguished nam...
How do I make a delay in Java?
...ewSingleThreadScheduledExecutor();
executorService.scheduleAtFixedRate(App::myTask, 0, 1, TimeUnit.SECONDS);
}
private static void myTask() {
System.out.println("Running");
}
And in Java 7:
public static void main(String[] args) {
final ScheduledExecutorService executorService = Exec...
How do I print out the contents of an object in Rails for easy debugging?
... in the View by using the debug' Helper ActionView::Helpers::DebugHelper
#app/view/controllers/post_controller.rb
def index
@posts = Post.all
end
#app/view/posts/index.html.erb
<%= debug(@posts) %>
#start your server
rails -s
results (in browser)
- !ruby/object:Post
raw_attributes:
...
How to delete migration files in Rails 3
...s not the last one), I just perform a new rake db:migrate again.
If your application is already on production or staging, it's safer to just write another migration that destroys your table or columns.
Another great reference for migrations is: http://guides.rubyonrails.org/migrations.html
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