Tutorial by Examples: an

public class Person { private final String salutation; private final String firstName; private final String middleName; private final String lastName; private final String suffix; private final Address address; private final boolean isFemale; private final boolean isEmployed; private final ...

Another example: a Weapon that shoots out Bullets. The Weapon acts as an object pool for the Bullets it creates. public class Weapon : MonoBehaviour { // The Bullet prefab that the Weapon will create public Bullet bulletPrefab; // This List is our object pool, which starts...

List can contain n number of items. The items in list are separated by comma >> a = [1,2,3] To access an element in the list use the index. The index starts from 0 >> a[0] >> 1 Lists can be nested. >> nested_list = [ [1,2,3], ['a','b','c'] ] >> nested_list...

You can use @ComponentScan in order to configure more complex package scanning. There is also @ComponentScans that act as a container annotation that aggregates several @ComponentScan annotations. Basic code examples @ComponentScan public class DemoAutoConfiguration { } @ComponentScans({@Co...

Calling C code from Go package main /* // Everything in comments above the import "C" is C code and will be compiles with the GCC. // Make sure you have a GCC installed. int addInC(int a, int b) { return a + b; } */ import "C" import "fmt" func ma...

(From this answer) The example below adds an enumerated type to a postgres database. First, edit the migration file (created with mix ecto.gen.migration): def up do # creating the enumerated type execute("CREATE TYPE post_status AS ENUM ('published', 'editing')") # creating a...

NSE functions should be used in interactive programming. However, when developping new functions in a new package, it's better to use SE version. Load dplyr and lazyeval : library(dplyr) library(lazyeval) Filtering NSE version filter(mtcars, cyl == 8) filter(mtcars, cyl < 6) filter(mtca...

On the machine where you'd like to make the backup, jump to the Redis CLI: redis-cli Password? If your master Redis DB (the one you want to replicate) has a password: config set masterauth <password> Start replication Run the following to begin replication: SLAVEOF <host> <...

A simple way to catch unhandled errors (exceptions) in a VFP application is to use the ON ERROR command near the beginning of your main program. The following ON ERROR command calls a method in the current program called "errorHandler". The values returned by ERROR (the VFP Error Number),...

While the JCE secures cryptographic operations and key generation, it is up to the developer to actually manage their keys. More information needs to be provided here. One commonly-accepted best practice for handling keys at runtime is to store them only as byte arrays, and never as strings. This i...

Needs content For most applications, the java.utils.Random class is a perfectly fine source of "random" data. If you need to choose a random element from an array, or generate a random string, or create a temporary "unique" identifier, you should probably use Random. However, m...

More information needed. A cryptographic hash function is a member of a class of functions with three vital properties; consistency, uniqueness, and irreversibility. Consistency: Given the same data, a hash function will always return the same value. That is, if X = Y, f(x) will always equal f(y) ...

navigator.mediaDevices is the common method adapted in Chrome and FF to getUserMedia as of now. A promised based call back which returns local stream on success navigator.mediaDevices.getUserMedia({ audio: true, video: true }) .then(stream => { // attach this stream to window obje...

This example uses Icarus and GTKWave. Installation instructions for those tools on OSx are provided elsewhere on this page. Lets begin with the module design. This module is a BCD to 7 segment display. I have coded the design in an obtuse way simply to give us something that is easily broken and...

$data = array( array( 'id' => 'sku_123ABC', 'qty' => 1, 'price' => 39.95, 'name' => 'T-Shirt', 'options' => array('Size' => 'L', 'Color' => 'Red') ), array( 'id' =>...

Open your jenkins instance script console http://yourJenkins:port/script following is an example for how to get information about this instance. copy the code to the console and click "Run". /* This scripts shows how to get basic information about Jenkins instance */ def jenkins = Jenki...

func sampleWithCompletion(completion:@escaping (()-> ())){ let delayInSeconds = 1.0 DispatchQueue.main.asyncAfter(deadline: DispatchTime.now() + delayInSeconds) { completion() } } //Call the function sampleWithCompletion { print("after on...

enum ReadResult{ case Successful case Failed case Pending } struct OutpuData { var data = Data() var result: ReadResult var error: Error? } func readData(from url: String, completion: @escaping (OutpuData) -> Void) { var _data = OutpuData(data: Data(), ...

This is an example of how you would do a one to many mapping using XML. We will use Author and Book as our example and assume an author may have written many books, but each book will only have one author. Author class: public class Author { private int id; private String firstName; ...

Eclipse can generate basic getters and setters for you. Right click in you class file and go to Source - Generate Getters and Setters (ALT+SHIFT+S). This will open a dialog where you can choose which fields you would like to have getters and setters generated for.