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What's the difference between passing by reference vs. passing by value?

...on as defined in the CS theory is now obsolete because the technique originally defined as "pass by reference" has since fallen out of favor and is seldom used now.1 Newer languages2 tend to use a different (but similar) pair of techniques to achieve the same effects (see below) which is the primar...
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Collections.emptyMap() vs new HashMap()

...need to explicitly type out the generic type of the collection - it's generally just inferred from the context of the method call. They're more efficient because they don't bother creating new objects; they just re-use an existing empty and immutable object. This effect is generally very minor, b...
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How can I prevent Visual Studio 2013 from closing my IIS Express app when I end debugging?

... edited Feb 22 at 17:13 Callum Watkins 2,22222 gold badges2323 silver badges4040 bronze badges answered Oct 24 '13 at 15:31 ...
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Named Branches vs Multiple Repositories

...ository. Your working copy will always reflect a single changeset, the so-called working copy parent changeset. Check this with: % hg parents Let's say that it reports [y]. You can see the heads with % hg heads and this will report [y] and [d]. If you want to update your repository to a clean ...
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Determine .NET Framework version for dll

... This answer is the most helpful. All Windows OSes after 2003 support Powershell. A shell giving immediate feedback, not requiring any additional application support as many of the other answers suggest. Great for a "one off" check of a dll. you're the man @...
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How to set OnClickListener on a RadioButton in Android?

... changed. import android.widget.CompoundButton.OnCheckedChangeListener; vs import android.widget.RadioGroup.OnCheckedChangeListener; When adding the snippet from Ricky I had errors: The method setOnCheckedChangeListener(RadioGroup.OnCheckedChangeListener) in the type RadioGroup is not app...
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Linq to Entities join vs groupjoin

...groups. This can be turned into a flat list of parent-child pairs by two small additions: from p in parents join c in children on p.Id equals c.Id into g // <= into from c in g.DefaultIfEmpty() // <= flattens the groups select new { Parent = p.Value, Child = c?.ChildValue } The ...
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How to lazy load images in ListView in Android

...GE"/> Please create only one instance of ImageLoader and reuse it all around your application. This way image caching will be much more efficient. It may be helpful to somebody. It downloads images in the background thread. Images are being cached on an SD card and in memory. The cache ...
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What is “Service Include” in a csproj file for?

...ts. This added seconds of delay to startup and solution open scenarios for all users, majority of whom don't use tests. In Visual Studio 2013, we changed it so that Test Explorer package is loaded only when the solution contains one or more test projects. Test projects are identified in two differen...
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How to sort strings in JavaScript

... An updated answer (October 2014) I was really annoyed about this string natural sorting order so I took quite some time to investigate this issue. I hope this helps. Long story short localeCompare() character support is badass, just use it. As pointed out by Shog9...