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Is there a pattern for initializing objects created via a DI container

... { get { return this.runTimeParam; } } } Notice how this allows us to protect the class' invariants by use of the readonly keyword. No smelly Initialize methods are necessary. An IMyIntfFactory implementation may be as simple as this: public class MyIntfFactory : IMyIntfFactory {...
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Can't find the 'libpq-fe.h header when trying to install pg gem

...on Rails 3.1 pre version. I like to use PostgreSQL, but the problem is installing the pg gem. It gives me the following error: ...
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How to properly reuse connection to Mongodb across NodeJs application and modules

...lhost:27017"; var _db; module.exports = { connectToServer: function( callback ) { MongoClient.connect( url, { useNewUrlParser: true }, function( err, client ) { _db = client.db('test_db'); return callback( err ); } ); }, getDb: function() { return _db; } }; To...
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How to disable Golang unused import error

...e. – OldCurmudgeon Jul 11 '18 at 11:32  |  show 4 more comme...
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Difference between object and class in Scala

...ompanion object of class C; note that the companion object is not automatically an instance of C. Also see Scala documentation for object and class. object as host of static members Most often, you need an object to hold methods and values/variables that shall be available without having to firs...
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How to find the width of a div using vanilla JavaScript?

... All Answers are right, but i still want to give some other alternatives that may work. If you are looking for the assigned width (ignoring padding, margin and so on) you could use. getComputedStyle(element).width; //returns...
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Loop backwards using indices in Python?

... This is better than the accepted answer since it doesn't actually allocate all the numbers in memory (in Python 3 the accepted answer wouldn't either), plus it's more obvious what is happening. – Blixt Mar 23 '12 at 13:52 ...
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Storing R.drawable IDs in XML array

... yubaraj poudelyubaraj poudel 3,25711 gold badge2323 silver badges2323 bronze badges add a comment ...
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Makefile, header dependencies

...vided by the gnu preprocessor are a bit confusing. However, the removal of all directories from the build target with -MM is documented and not a bug [gpp]: By default CPP takes the name of the main input file, deletes any directory components and any file suffix such as ‘.c’, and appends ...
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How to allow to accept only image files?

...t is very sketchy on mobiles (as of 2015) and by some reports this may actually prevent some mobile browsers from uploading anything at all, so be sure to test your target platforms well. For detailed browser support, see http://caniuse.com/#feat=input-file-accept ...