There are situations when you need to calculate something really large in your Flash application, while not interrupting the user's experience. For this, you need to devise your lengthy process as a multi-step process with saved state between iterations. For example, you need to perform a background...
Shiny is an R package developed by RStudio that allows the creation of web pages to interactively display the results of an analysis in R.
There are two simple ways to create a Shiny app:
in one .R file, or
in two files: ui.R and server.R.
A Shiny app is divided into two parts:
ui: A user...
Prerequisites
sudo apt-get install build-essential
sudo apt-get install python
[optional]
sudo apt-get install git
Get source and build
cd ~
git clone https://github.com/nodejs/node.git
OR
For the latest LTS Node.js version 6.10.2
cd ~
wget https://nodejs.org/dist/v6.3.0/node-v6.10....
A common way to download Go dependencies is by using the go get <package> command, which will save the package into the global/shared $GOPATH/src directory. This means that a single version of each package will be linked into each project that includes it as a dependency. This also means that...
The Iterator.remove() method is an optional method that removes the element returned by the previous call to Iterator.next(). For example, the following code populates a list of strings and then removes all of the empty strings.
List<String> names = new ArrayList<>();
names.add("...
A class in Scala is a 'blueprint' of a class instance. An instance contains the state and behavior as defined by that class. To declare a class:
class MyClass{} // curly braces are optional here as class body is empty
An instance can be instantiated using new keyword:
var instance = new MyClas...
Transformations are done with respect to a point which is defined by the transform-origin property.
The property takes 2 values : transform-origin: X Y;
In the following example the first div (.tl) is rotate around the top left corner with transform-origin: 0 0; and the second (.tr)is transformed ...
Installation
The preferred way to install Mockito is to declare a dependency on mockito-core with a build system of choice. As of July 22nd, 2016, the latest non-beta version is 1.10.19, but 2.x is already encouraged to be migrated to.
Maven
<dependency>
<groupId>org.mockito</...
The following example listens to window.onerror event and uses an image beacon technique to send the information through the GET parameters of an URL.
var hasLoggedOnce = false;
// Some browsers (at least Firefox) don't report line and column numbers
// when event is handled through window.addE...
This is an example of how to use the generic type TFood inside Eat method on the class Animal
public interface IFood
{
void EatenBy(Animal animal);
}
public class Grass: IFood
{
public void EatenBy(Animal animal)
{
Console.WriteLine("Grass was eaten by: {0}",...
arr = np.arange(7)
print(arr)
# Out: array([0, 1, 2, 3, 4, 5, 6])
Comparison with a scalar returns a boolean array:
arr > 4
# Out: array([False, False, False, False, False, True, True], dtype=bool)
This array can be used in indexing to select only the numbers greater than 4:
arr[arr&...
The numpy.reshape (same as numpy.ndarray.reshape) method returns an array of the same total size, but in a new shape:
print(np.arange(10).reshape((2, 5)))
# [[0 1 2 3 4]
# [5 6 7 8 9]]
It returns a new array, and doesn't operate in place:
a = np.arange(12)
a.reshape((3, 4))
print(a)
# ...
Draw samples from a normal (gaussian) distribution
# Generate 5 random numbers from a standard normal distribution
# (mean = 0, standard deviation = 1)
np.random.randn(5)
# Out: array([-0.84423086, 0.70564081, -0.39878617, -0.82719653, -0.4157447 ])
# This result can also be achieved with t...
Drush status
drush status
This will give you an overview of your Drupal site. Version, URI, database location, file paths, default theme etc. If you use this command and you do not see this information, it means you are in a wrong folder and Drush does not know which Drupal site you are referrin...
If your class doesn't implement a specific overloaded operator for the argument types provided, it should return NotImplemented (note that this is a special constant, not the same as NotImplementedError). This will allow Python to fall back to trying other methods to make the operation work:
When...
Files and directories (another name for folders) are at the heart of Linux, so being able to create, view, move, and delete them from the command line is very important and quite powerful. These file manipulation commands allow you to perform the same tasks that a graphical file explorer would perfo...
