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Restart node upon changing a file

For someone who is coming from PHP background the process of killing node and starting it again after every code change, seems very tedious. Is there any flag when starting a script with node to automatically restart node when code change is saved? ...
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What does .SD stand for in data.table in R

...ks useful but I do not really know what I am doing with it. What does it stand for? Why is there a preceding period (full stop). What is happening when I use it? ...
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What is a loop invariant?

... @Tomas Petricek - when the loop terminates, i = 10 and j = -1; so the weaker invariant example you gave may not be correct (?) – Raja Apr 7 '12 at 22:47 7 ...
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I change the capitalization of a directory and Git doesn't seem to pick up on it

... Lion that is under Git version control. I had these lowercase directories and then later capitalized them (e.g. emailaddresses => EmailAddresses), but Git doesn't seem to recognize the change. It still thinks the directories are lowercase when I run git ls-files and other commands. ...
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JOIN queries vs multiple queries

Are JOIN queries faster than several queries? (You run your main query, and then you run many other SELECTs based on the results from your main query) ...
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Is it possible to change icons in Visual Studio 2012?

...of the question. I've been unable to find any built-in way to achieve this and the switch to WPF makes it even harder to hack around. This app simply extracts the image resources from the unmanaged DLLs in Visual Studio 2010 and injects them into the DLLs for Visual Studio 2012. The managed resourc...
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AngularJS $http and $resource

...With $http you're going to be making GET, POST, DELETE type calls manually and processing the objects they return on your own. $resource wraps $http for use in RESTful web API scenarios. Speaking VERY generally: A RESTful web service will be a service with one endpoint for a data type that does...
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Fastest sort of fixed length 6 int array

...'s always best to test, test, test. I would try at least sorting networks and insertion sort. If I were betting, I'd put my money on insertion sort based on past experience. Do you know anything about the input data? Some algorithms will perform better with certain kinds of data. For example, i...
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What does “Changes not staged for commit” mean

...made since the last commit. For example, let's say you have file a, file b and file c. You modify file a and file b but the changes are very different in nature and you don't want all of them to be in one single commit. You issue git add a git commit a -m "bugfix, in a" git add b git commit b -m "n...
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Are tuples more efficient than lists in Python?

Is there any performance difference between tuples and lists when it comes to instantiation and retrieval of elements? 8 A...