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The purpose of Model View Projection Matrix
...ection 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 can use the one result to map all the way from object space to screen space, makin...
Some questions about Automatic Reference Counting in iOS5 SDK
...nk will be completed) for iOS 4.3.
I just read about ARC in iOS 5, and basically I understood that we will never need to release and retain objects anymore. My questions are:
...
Is it possible to figure out the parameter type and return type of a lambda?
...plementation based on Specializing a template on a lambda in C++0x which can give the parameter types. The trick, as described in the answer in that question, is to use the decltype of the lambda's operator().
template <typename T>
struct function_traits
: public function_traits<decl...
How can I use if/else in a dictionary comprehension?
...
@Marcin's answer covers it all, but just in case someone wants to see an actual example, I add two below:
Let's say you have the following dictionary of sets
d = {'key1': {'a', 'b', 'c'}, 'key2': {'foo', 'bar'}, 'key3': {'so', 'sad'}}
and you want to create a new d...
Rebase a single Git commit
...
You can cherry-pick XX to master.
git checkout master
git cherry-pick <commit ID of XX>
And remove the last commit from the feature branch with git reset.
git checkout Feature-branch
git reset --hard HEAD^
...
How do I provide custom cast support for my class?
How do I provide support for casting my class to other types? For example, if I have my own implementation of managing a byte[] , and I want to let people cast my class to a byte[] , which will just return the private member, how would I do this?
...
How to use ArrayAdapter
...
I've removed items field from above code, because it can easily lead to errors - for example if someone change internal list of items using adapter.clear() or adapter.add(...)
– prostynick
Jul 3 '13 at 8:31
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What's the standard way to work with dates and times in Scala? Should I use Java types or there are
What's the standard way to work with dates and times in Scala? Should I use Java types such as java.util.Date or there are native Scala alternatives?
...
Booleans, conditional operators and autoboxing
... Boolean (autoboxing of 3rd operand to Boolean)
See Java Language Specification, section 15.25 Conditional Operator ? :
For E1, the types of the 2nd and 3rd operands are Boolean and boolean respectively, so this clause applies:
If one of the second and third operands is of type boolean and t...
Why do some C# lambda expressions compile to static methods?
As you can see in the code below, I have declared an Action<> object as a variable.
5 Answers
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