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Difference between Static and final?
I'm always confused between static and final keywords in java .
11 Answers
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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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Is putting a div inside an anchor ever correct?
...; element "may be wrapped around entire paragraphs, lists, tables, and so forth, even entire sections, so long as there is no interactive content within (e.g. buttons or other links)".
HTML 4.01 specifies that <a> elements may only contain inline elements. A <div> is a block element, so ...
How to upgrade rubygems
...ems-update
update_rubygems
gem update --system
run this commands as root or use sudo.
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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...
How efficient is locking an unlocked mutex? What is the cost of a mutex?
In a low level language (C, C++ or whatever): I have the choice in between either having a bunch of mutexes (like what pthread gives me or whatever the native system library provides) or a single one for an object.
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How can I use redis with Django?
I've heard of redis-cache but how exactly does it work? Is it used as a layer between django and my rdbms, by caching the rdbms queries somehow?
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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...
How to analyze a java thread dump?
I am trying to understand more about java, especially about memory management and threads.
For this reason I have recently found interest in looking at thread dumps.
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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...