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Re-raise exception with a different type and message, preserving existing information

...ns that it can raise (e.g. inheriting from a FooError abstract class for all the foo module's specific exceptions). This allows users of the module to catch those particular exceptions and handle them distinctly, if needed. But many of the exceptions raised from the module are raised because of ...
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Why is my git repository so big?

...he whole directory structure. Edit: Here's Ian's one liner for recreating all branches in the new repo: d1=#original repo d2=#new repo (must already exist) cd $d1 for b in $(git branch | cut -c 3-) do git checkout $b x=$(git rev-parse HEAD) cd $d2 git checkout -b $b $x cd $d1 d...
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How do I check if an object has a specific property in JavaScript?

... I'm really confused by the answers that have been given - most of them are just outright incorrect. Of course you can have object properties that have undefined, null, or false values. So simply reducing the property check to typeo...
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What does __FILE__ mean in Ruby?

I see this all the time in Ruby: 4 Answers 4 ...
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START_STICKY and START_NOT_STICKY

...TICKY tells the OS to recreate the service after it has enough memory and call onStartCommand() again with a null intent. START_NOT_STICKY tells the OS to not bother recreating the service again. There is also a third code START_REDELIVER_INTENT that tells the OS to recreate the service and redeliv...
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resize ipython notebook output window

By default the ipython notebook ouput is limited to a small sub window at the bottom. This makes us force to use separate scroll bar that comes with the output window, when the output is big. ...
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Why do we use __init__ in Python classes?

...Spot is a bit of a cripple and is mostly yellow. The __init__ function is called a constructor, or initializer, and is automatically called when you create a new instance of a class. Within that function, the newly created object is assigned to the parameter self. The notation self.legs is an attrib...
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Redirect stdout to a file in Python?

...t it back when you're done, sys.stdout = stdout. That way if you're being called from a function that uses print you don't screw them up. – mgold Dec 20 '12 at 15:06 4 ...
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Cassandra port usage - how are the ports used?

...1 - TLS Internode communication (used if TLS enabled) 9160 - Thrift client API 9042 - CQL native transport port share | improve this answer | follow | ...
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How to use underscore.js as a template engine?

...y know good tutorials about how to use underscore.js for templating, especially for biginners who have less experience with advanced javascript. Thanks ...