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Specify width in *characters*
When using a fixed width font , I'd like to specify the width of an HTML element in characters .
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ipython notebook clear cell output in code
In a iPython notebook, I have a while loop that listens to a Serial port and print the received data in real time.
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Git: updating remote branch information
In a git repository, a remote branch I am not tracking was deleted. When I type
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How can I alter a primary key constraint using SQL syntax?
I have a table that is missing a column in its primary key constraint. Instead of editing it through SQL Server, I want to put this in a script to add it as part of our update scripts.
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Undo a particular commit in Git that's been pushed to remote repos
What is the simplest way to undo a particular commit that is:
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How do I get the name of a Ruby class?
How can I get the class name from an ActiveRecord object?
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How do I modify a MySQL column to allow NULL?
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How to check whether a script is running under Node.js?
I have a script I am requiring from a Node.js script, which I want to keep JavaScript engine independent.
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How is Generic Covariance & Contra-variance Implemented in C# 4.0?
I didn't attend PDC 2008, but I heard some news that C# 4.0 is announced to support Generic covariance and contra-variance. That is, List<string> can be assigned to List<object> . How could that be?
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What does “Receiver type 'CALayer' for instance message is a forward declaration” mean here?
I'm porting a block of code from an iOS4 project to iOS5 and I'm having some troubles with ARC. The code generates a PDF from a screen capture.
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