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The purpose of Model View Projection Matrix
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The model, view and projection matrices are three separate matrices. Model maps from an object's local coordinate space into world space, view from world space to camera space, projection from camera to screen.
If you compose all three, you...
Difference between framework and static library in xcode4, and how to call them
I am quite new to xcode and objective-c. I want to ask a very basic question.
2 Answers
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Determine Whether Integer Is Between Two Other Integers?
... integer is between two other integers (e.g. greater than/equal to 10000 and less than/equal to 30000 )?
11 Answers
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LINQ Join with Multiple Conditions in On Clause
... That seems like a non obvious way to do that. I'm not sure I would understand what it's suppose to do.
– svick
Oct 5 '11 at 16:52
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How does Hadoop process records split across block boundaries?
...nteresting question, I spent some time looking at the code for the details and here are my thoughts. The splits are handled by the client by InputFormat.getSplits, so a look at FileInputFormat gives the following info:
For each input file, get the file length, the block size and calculate the spli...
Less aggressive compilation with CSS3 calc
The Less compilers that I'm using ( OrangeBits and dotless 1.3.0.5 ) are aggressively translating
4 Answers
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Difference between using Throwable and Exception in a try catch
... highest "catch all" level of a thread where you want to log or otherwise handle absolutely everything that can go wrong. It would be more typical in a framework type application (for example an application server or a testing framework) where it can be running unknown code and should not be affecte...
How to generate gcc debug symbol outside the build target?
...a .debug extension in a .debug directory. This way I can tar the libraries and executables in one tar file and the .debug directories in another. If I want to add the debug info later on I simply extract the debug tar file and voila I have symbolic debug information.
This is the bash script:
#!/bi...
What is the purpose of “!” and “?” at the end of method names?
Sometimes I see methods in Ruby that have "?" and "!" at the end of them, e.g:
5 Answers
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Converting an array of objects to ActiveRecord::Relation
... ActiveRecord::Relation since a Relation is just a builder for a SQL query and its methods do not operate on actual data.
However, if what you want is a relation then:
for ActiveRecord 3.x, don’t call all and instead call scoped, which will give back a Relation which represents the same records...