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Cross cutting concern example
...he Concern.
A Concern is a term that refers to a part of the system divided on the basis of the functionality.
Concerns are two types:
The concerns representing single and specific functionality for primary requirements are known as core concerns.
OR
Primary functionlity of the system is...
xUnit.net: Global setup + teardown?
...r, it is easy to create one. Just create a base test class that implements IDisposable and do your initialization in the constructor and your teardown in the IDisposable.Dispose method. This would look like this:
public abstract class TestsBase : IDisposable
{
protected TestsBase()
{
...
Should I use a data.frame or a matrix?
...es can make your code far more efficient than using data frames, often considerably so. That is one reason why internally, a lot of R functions will coerce to matrices data that are in data frames.
Data frames are often far more convenient; one doesn't always have solely atomic chunks of data lying...
Why can't yield return appear inside a try block with a catch?
... correctly.
EDIT: Here's a pseudo-proof of how it why it's feasible.
Consider that:
You can make sure that the yield return part itself doesn't throw an exception (precalculate the value, and then you're just setting a field and returning "true")
You're allowed try/catch which doesn't use yield ...
My attempt at value initialization is interpreted as a function declaration, and why doesn't A a(())
...
There is no enlightened answer, it's just because it's not defined as valid syntax by the C++ language... So it is so, by definition of the language.
If you do have an expression within then it is valid. For example:
((0));//compiles
Even simpler put: because (x) is a valid C++ expression, ...
How is Perl's @INC constructed? (aka What are all the ways of affecting where Perl modules are searc
...ote: Since @INC is used during the compilation phase, this must be done inside of a BEGIN {} block, which precedes the use MyModule statement.
Add directories to the beginning via unshift @INC, $dir.
Add directories to the end via push @INC, $dir.
Do anything else you can do with a Perl array.
...
When should I use jQuery deferred's “then” method and when should I use the “pipe” method?
...values beforehand so that you don't have to do this in both callbacks individually? Yes! And that's what we can use .pipe() for:
deferred.pipe(function(result) {
// result = [{value: 2}, {value: 4}, {value: 6}]
var values = [];
for(var i = 0, len = result.length; i < len; i++) {
...
Updating packages in Emacs
...versions afterwards.
You may also want to take a look at Carton which provides a more convenient way to manage your packages by declaring them in a dedicated file, and includes a convenient command line client to automatically install and upgrade packages declared in this way.
The order of packa...
Why doesn't the example compile, aka how does (co-, contra-, and in-) variance work?
...t[AnyVal] because Int is a subtype of AnyVal. This means that you may provide an instance of List[Int] when a value of type List[AnyVal] is expected. This is really a very intuitive way for generics to work, but it turns out that it is unsound (breaks the type system) when used in the presence of ...
How to add a local repo and treat it as a remote repo
...
I am posting this answer to provide a script with explanations that covers three different scenarios of creating a local repo that has a local remote. You can run the entire script and it will create the test repos in your home folder (tested on windows git...