Tutorial by Examples: o

Internally, all videos are a just series of pictures. Let's take a look at one such picture. That looks odd, right? Indeed. The pictures that make up a video may have an aspect ratio that are different from the DAR, most often for algorithmic reasons (e.g. only sizes that are a multiple of 16 can...

As the picture aspect ratio example indicates, videos are series of pictures that do not necessarily have the same aspect ratio as the final result to be displayed to the user. So how do you get from those stretched pictures to the normally displayed output? You need a stretching factor! This stret...

This is another name for sample aspect ratio and should be avoided, as the natural acronym (PAR) conflicts with picture aspect ratio.

Consider the following list comprehension Python 2.x2.7 i = 0 a = [i for i in range(3)] print(i) # Outputs 2 This occurs only in Python 2 due to the fact that the list comprehension “leaks” the loop control variable into the surrounding scope (source). This behavior can lead to hard-to-find...

To create a Behavior just extend the CoordinatorLayout.Behavior class. Extend the CoordinatorLayout.Behavior Example: public class MyBehavior<V extends View> extends CoordinatorLayout.Behavior<V> { /** * Default constructor. */ public MyBehavior() { ...

The SwipeDismissBehavior works on any View and implements the functionality of swipe to dismiss in our layouts with a CoordinatorLayout. Just use: final SwipeDismissBehavior<MyView> swipe = new SwipeDismissBehavior(); //Sets the swipe direction for this behavior. ...

Using a list object you can create a fully functional generic Stack with helper methods such as peeking and checking if the stack is Empty. Check out the official python docs for using list as Stack here. #define a stack class class Stack: def __init__(self): self.items = [] ...

Smack (Java) Using Smack 4.1 It is recommended to include Smack as Maven dependency in your project (e.g. by using gradle or Maven). Otherwhise the following Smack artifacts/jars have to be added manually to the classpath: smack-core, smack-extensions, smack-experimental, smack-im, smnack-tcp,...

Detailed instructions on getting gerrit set up or installed.

When you really need to script ssh connection, piping the password into the ssh command does not work (echo passw0rd | ssh host). It is because the password is not read from standard input, but directly from TTY (teleprinter, teletypewriter, Teletype for historical reasons). But there is sshpass to...

Select the project you want to add the reference to Moq. Open Nuget for this project. Select "Browse" than type "moq" at the search box. Select "Moq" and than click on Install. Following these steps will install the Moq package and will add a reference to it i...

#include <iostream> #include <boost/accumulators/accumulators.hpp> #include <boost/accumulators/statistics/stats.hpp> #include <boost/accumulators/statistics/mean.hpp> #include <boost/accumulators/statistics/variance.hpp> int main() { using namespace boost...

Detailed instructions on getting quickblox set up or installed. Go to https://admin.quickblox.com and click on “Register” at the top or just follow the link: https://admin.quickblox.com/register.

This example shows how JNDI works in RMI. It has two roles: to provide the server with a bind/unbind/rebind API to the RMI Registry to provide the client with a lookup/list API to the RMI Registry. The RMI Registry is part of RMI, not JNDI. To make this simple, we will use java.rmi.registry....

Detailed instructions on getting oracle11g set up or installed.

A table can be joined onto itself in what is known as a self join, combining records in the table with other records in the same table. Self joins are typically used in queries where a hierarchy in the table's columns is defined. Consider the sample data in a table called Employees: IDNameBoss_ID1...

These types do not inherit from Array<T> to avoid boxing, however, they have the same attributes and methods. Kotlin typeFactory functionJVM typeBooleanArraybooleanArrayOf(true, false)boolean[]ByteArraybyteArrayOf(1, 2, 3)byte[]CharArraycharArrayOf('a', 'b', 'c')char[]DoubleArraydoubleArrayOf...

average() is defined for Byte, Int, Long, Short, Double, Float and always returns Double: val doubles = doubleArrayOf(1.5, 3.0) print(doubles.average()) // prints 2.25 val ints = intArrayOf(1, 4) println(ints.average()) // prints 2.5 component1(), component2(), ... component5() return an it...

# creates a function with no arguments, which returns 3 get_three = () -> return 3 # same as above get_three = -> 3 # creates a function with arguments add_three = (num) -> num + 3 # multiple arguments, etc. add = (a, b) -> a + b

// all variables `s` have the type `String` let s = "hi".to_string(); // Generic way to convert into `String`. This works // for all types that implement `Display`. let s = "hi".to_owned(); // Clearly states the intend of obtaining an owned obje...