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Set initial focus in an Android application

In my Android application it automatically focuses the first Button I have in my layout, giving it an orange outline. How can I set the initial focus preferably in XML, and can this be set to nothing? ...
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WebSockets protocol vs HTTP

...kets is better for situations that involve low-latency communication especially for low latency for client to server messages. For server to client data you can get fairly low latency using long-held connections and chunked transfer. However, this doesn't help with client to server latency which req...
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Error: Could not find or load main class in intelliJ IDE

...ginner in Java and am trying to run my code using IntelliJ that I just installed as my IDE with JDK 1.7. The following piece of code keeps does not even compile and keeps giving me the error: ...
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What is the purpose of wrapping whole Javascript files in anonymous functions like “(function(){ … }

... It's usually to namespace (see later) and control the visibility of member functions and/or variables. Think of it like an object definition. The technical name for it is an Immediately Invoked Function Expression (IIFE). jQuery plug...
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Visual Studio loading symbols

... Debug -> Delete All Breakpoints ( http://darrinbishop.com/blog/2010/06/sharepoint-2010-hangs-after-visual-studio-2010-f5-debugging ) After that you can use them again, but do it once. It will remove some kind of "invalid" breakpoints too and...
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How do I rename the extension for a bunch of files?

In a directory, I have a bunch of *.html files. I'd like to rename them all to *.txt 24 Answers ...
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How to Get the Title of a HTML Page Displayed in UIWebView?

... Edit: just saw you found out the answer... sheeeiiitttt I literally just learned this! To do this, you don't even need to have it displayed in UIWebView. (But as you are using it, you can just get the URL of the current page) Anyways, here's the code and some (feeble) explanation: ...
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Detect if called through require or directly by command line

How can I detect whether my Node.JS file was called using SH: node path-to-file or JS: require('path-to-file') ? 5 Answers...
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What is the difference between re.search and re.match?

... Now, enough talk. Time to see some example code: # example code: string_with_newlines = """something someotherthing""" import re print re.match('some', string_with_newlines) # matches print re.match('someother', string_with_newlines) # won't match print re.match('^someother', s...
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Find integer index of rows with NaN in pandas dataframe

... And just in case, if you want to find the coordinates of 'nan' for all the columns instead (supposing they are all numericals), here you go: df = pd.DataFrame([[0,1,3,4,np.nan,2],[3,5,6,np.nan,3,3]]) df 0 1 2 3 4 5 0 0 1 3 4.0 NaN 2 1 3 5 6 NaN 3.0 3 np.where(np.as...