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Why extend the Android Application class?
...io in which extending Application is either preferable to another approach or necessary to accomplish something. If you have an expensive, frequently used object you can initialize it in an IntentService when you detect that the object isn't currently present. Application itself runs on the UI threa...
Difference between Static and final?
I'm always confused between static and final keywords in java .
11 Answers
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What is the difference between Amazon SNS and Amazon SQS?
...euing system. Messages are NOT pushed to receivers. Receivers have to poll or pull messages from SQS. Messages can't be received by multiple receivers at the same time. Any one receiver can receive a message, process and delete it. Other receivers do not receive the same message later. Polling inher...
capturing self strongly in this block is likely to lead to a retain cycle
... your implicit property access of self.timerDisp - you can't refer to self or properties on self from within a block that will be strongly retained by self.
You can get around this by creating a weak reference to self before accessing timerDisp inside your block:
__weak typeof(self) weakSelf = sel...
ASP.NET MVC Performance
I found some wild remarks that ASP.NET MVC is 30x faster than ASP.NET WebForms. What real performance difference is there, has this been measured and what are the performance benefits.
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URL encoding the space character: + or %20?
... (emphasis and link added):
When data that has been entered into HTML forms is submitted, the form field names and values are encoded and sent to the server in an HTTP request message using method GET or POST, or, historically, via email. The encoding used by default is based on a very early ver...
Windows XP or later Windows: How can I run a batch file in the background with no window displayed?
..., you'll want to put an exit command at the end of your second batch file, or you'll be within a second cmd shell once everything is done.
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Use rvmrc or ruby-version file to set a project gemset with RVM?
...M, the Ruby Version Manager to specify a Ruby version and a set of gems for each of my Rails projects.
5 Answers
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SignalR: Why choose Hub vs. Persistent Connection?
...tent connections.
From the highly up-voted comment below:
Partially correct. You can get topics or groups in persistent connections as well. The big difference is dispatching different types of messages. For example you have different kinds of messages and you want to send different kinds of p...
Android: Scale a Drawable or background image?
...is simply centered, not scaled as Sam is asking. When I use ImageView, it works beautifully, no muss/fuss. (n.b.: I'm also not scrolling in my case.) What would I augment bitmap with in order to scale the image?
– Joe D'Andrea
Feb 27 '12 at 4:10
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