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Alarm Manager Example

... until the phone turns off. Add to Manifest.xml: ... <uses-permission android:name="android.permission.WAKE_LOCK"></uses-permission> ... <receiver android:process=":remote" android:name=".Alarm"></receiver> ... Code in your class: package yourPackage; import android.app....
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Do HTML WebSockets maintain an open connection for each client? Does this scale?

... line of communication with the server. I'm just wondering how that scales and how many open WebSocket connections a server can handle. Maybe leaving those connections open isn't a problem in reality, but it feels like it is. ...
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How to Test a Concern in Rails

...test your concerns against the actual classes that use them (e.g., models) and you'll be able to test them everywhere they're used. And you only have to write the tests once and then just include them in any model spec that uses your concern. In your case, this might look something like this: # app...
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Preventing scroll bars from being hidden for MacOS trackpad users in WebKit/Blink

...-scrollbar pseudo-elements [blog]. You can disable the default appearance and behaviour by setting -webkit-appearance [docs] to none. Because you're removing the default style, you'll also need to specify the style yourself or the scroll bar will never show up. The following CSS recreates the app...
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String literals and escape characters in postgresql

...s such: insert into EscapeTest (text) values (E'This is the first part \n And this is the second'); This suppressed the warning, but the text was still not being returned correctly. When I added the additional slash as Michael suggested, it worked. As such: insert into EscapeTest (text) values ...
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extract part of a string using bash/cut/split

...om the end So # means match from the beginning (think of a comment line) and % means from the end. One instance means shortest and two instances means longest. You can get substrings based on position using numbers: ${MYVAR:3} # Remove the first three chars (leaving 4..end) ${MYVAR::3} # Retu...
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What jsf component can render a div tag?

...n the panelGroup solution, as you have to generate this for both the start and end tags if you want to wrap any of your JSF code with the div tag. Alternatively, all the major UI Frameworks have a div component tag, or you could write your own. ...
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How do I choose between Semaphore and SemaphoreSlim?

... documentation states that the SemaphoreSlim is a lightweight alternative and doesn't use Windows Kernel semaphores. This resource states that the SemaphoreSlim is much faster. In what situations does the SemaphoreSlim make more sense over the Semaphore and vice versa? ...
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What is routes.IgnoreRoute(“{resource}.axd/{*pathInfo}”)

...ist physically. ASP.NET uses URLs with .axd extensions (ScriptResource.axd and WebResource.axd) internally, and they are handled by an HttpHandler. Therefore, you should keep this rule, to prevent ASP.NET MVC from trying to handle the request instead of letting the dedicated HttpHandler do it. ...
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What's the difference between BaseAdapter and ArrayAdapter?

I want to know the difference between using BaseAdapter and ArrayAdapter . 6 Answers ...