大约有 19,602 项符合查询结果（耗时：0.0353秒） [XML]
Design Patterns: Abstract Factory vs Factory Method
...oduct. (It is better than the Static Factory. When new types are added the base Product class does not need to be changed only the Simple Factory Class)
Factory Method
Contains one method to produce one type of product related to its type. (It is better than a Simple Factory because the type is ...
Difference between __getattr__ vs __getattribute__
...ve from object, old-style classes are those in Python 2.x with no explicit base class. But the distinction between old-style and new-style classes is not the important one when choosing between __getattr__ and __getattribute__.
You almost certainly want __getattr__.
...
Load dimension value from res/values/dimension.xml from source code
...etrieve a dimensional for a particular resource ID. Unit conversions
are based on the current DisplayMetrics associated with the resources.
so if you want exact dp value just as in xml just divide it with DisplayMetrics density
int dp = (int) (getResources().getDimension(R.dimen.test) / getReso...
Visual Studio Post Build Event - Copy to Relative Directory Location
... contents of the output directory to a different location under the same "base" folder. This parent folder is a relative part and can vary based on Source Control settings.
...
Developing cross platform mobile application [closed]
...e device. The most famous (in fact the only one I know) are commercial and based on the Mono project (C# development):
MonoTouch for iPhone [ 1 ]
MonoDroid for Android (still in development)
Similar project for BlackBerry (still in development)
But I'm not sure we can really call this cross-plat...
Compiling C++11 with g++
...+0x. Here's a quote from the man page:
The compiler can accept several base standards, such as c89 or c++98,
and GNU dialects of those standards, such as gnu89 or gnu++98. By
specifying a base standard, the compiler will accept all programs
following that standard and those using GNU exten...
Spring Test & Security: How to mock authentication?
...e a get mapped function to the route /foo/salute and we are testing a role based security with the @Secured annotation, although you can test @PreAuthorize and @PostAuthorize as well.
Let's create two tests, one to check if a valid user can see this salute response and the other to check if it's act...
What is polymorphism, what is it for, and how is it used?
...ype().Name, v.Wheels));
}
}
In this example, we create a list of the base class Vehicle, which does not know about how many wheels each of its sub-classes has, but does know that each sub-class is responsible for knowing how many wheels it has.
We then add a Bicycle, Car and Truck to the list...
Caveats of select/poll vs. epoll reactors in Twisted
Everything I've read and experienced ( Tornado based apps ) leads me to believe that ePoll is a natural replacement for Select and Poll based networking, especially with Twisted. Which makes me paranoid, its pretty rare for a better technique or methodology not to come with a price.
...
Is it possible to dynamically compile and execute C# code fragments?
...ed that
interface.
You may have a problem if you use an interface as a base type. If you add a single new method to the interface in the future all existing client-supplied classes that implement the interface now become abstract, meaning you won't be able to compile or instantiate the client-su...