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How efficient is locking an unlocked mutex? What is the cost of a mutex?
In a low level language (C, C++ or whatever): I have the choice in between either having a bunch of mutexes (like what pthread gives me or whatever the native system library provides) or a single one for an object.
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OR is not supported with CASE Statement in SQL Server
The OR operator in the WHEN clause of a CASE statement is not supported. How can I do this?
11 Answers
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What is the meaning of git reset --hard origin/master?
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Is there a best practice for generating html with javascript
I'm calling a web service that returns an array of objects in JSON. I want to take those objects and populate a div with HTML. Let's say each object contains a url and a name.
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Selecting data from two different servers in SQL Server
How can I select data in the same query from two different databases that are on two different servers in SQL Server?
15 An...
Is gcc's __attribute__((packed)) / #pragma pack unsafe?
In C, the compiler will lay out members of a struct in the order in which they're declared, with possible padding bytes inserted between members, or after the last member, to ensure that each member is aligned properly.
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Search text in fields in every table of a MySQL database
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You can use this project:
http://code.google.com/p/anywhereindb
This will search all the data in all table.
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Determining the last changelist synced to in Perforce
A question that occasionally arises is what is the best way to determine the changelist that you last synced to in Perforce. This is often needed for things like injecting the changelist number into the revision info by the automatic build system.
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Symbolic links and synced folders in Vagrant
I want to use Vagrant to provide a common development environment to my team. The hosts are completely different:
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How do I convert a pandas Series or index to a Numpy array? [duplicate]
Do you know how to get the index or column of a DataFrame as a NumPy array or python list?
8 Answers
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