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Linq code to select one item

...ion methods directly like: var item = Items.First(i => i.Id == 123); And if you don't want to throw an error if the list is empty, use FirstOrDefault which returns the default value for the element type (null for reference types): var item = Items.FirstOrDefault(i => i.Id == 123); if (ite...
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How to change Android version and code version number?

How to change Android version and code version number Android Studio? I want to change apk file (app) on Google Play and I need to change Android version and code version number. I tried with this in AndroidManifest.xml file in Android Studio: ...
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Android SQLite DB When to Close

I am working with a SQLite database on android. My database manager is a singleton and right now opens a connection to the database when it is initialized. It is safe to leave the database open the entire time so that when someone calls my class to work with the database it is already open? Or shoul...
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How can I propagate exceptions between threads?

... Sep 6 '15 at 21:22 Gerardo HernandezGerardo Hernandez 1,4301313 silver badges1919 bronze badges ...
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What is the difference between svg's x and dx attribute?

What is the difference between svg's x and dx attribute (or y and dy)? When would be a proper time to use the axis shift attribute (dx) versus the location attribute (x)? ...
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How to check if a variable is an integer in JavaScript?

How do I check if a variable is an integer in JavaScript, and throw an alert if it isn't? I tried this, but it doesn't work: ...
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How to verify Facebook access token?

... edited Jan 13 '16 at 19:11 AndHeiberg 94911 gold badge99 silver badges2929 bronze badges answered May 29 '13 at 20:07 ...
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getApplication() vs. getApplicationContext()

...s, so here we go: what's the deal with Activity/Service.getApplication() and Context.getApplicationContext() ? 4 Answers...
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What is the need of JSF, when UI can be achieved with JavaScript libraries such as jQuery and Angula

I was reading about JSF that its a UI framework and provides some UI components. But how is it better or different from number of components that are available from jQueryUI, AngularJS, ExtJS, or even plain HTML, CSS and JavaScript. ...
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How to obtain the number of CPUs/cores in Linux from the command line?

... awk '{print $4}' which should return (for example) 8 (whereas the command above would return 16) share | improve this answer | follow | ...