Tutorial by Examples: b

$pwd Displays the present working directory. $who Displays all the users logged in. $who am i Shows the username of the current user. $date Displays the current system date $which <command> Shows the path of the specified command. For example "$which pwd" will sho...

Since 1.7 there's a java.util.BitSet class that provides simple and user-friendly bit storage and manipulation interface: final BitSet bitSet = new BitSet(8); // by default all bits are unset IntStream.range(0, 8).filter(i -> i % 2 == 0).forEach(bitSet::set); // {0, 2, 4, 6} bitSet.set(3);...

To allow multiple user registration on Ejabberd server, we need to configure file ejabberd.yml in Ejabberd latest versions. Configure ejabberd.yml like: in access_rules: add register: - allow register_from: - allow registration_timeout: - infinity mod_register: acc...

Remove all previous imports from those HTmL files from which you copy-pasted the imports. Replace imports with <link rel="import" href="PATH/TO/IMPORTFILE/build.min.html">

In your custom application class, override the onCreate() method, add the line below: CleverTapAPI.setDebugLevel(1);

For this example we will use the Live Test RavenDB instance. We will build a simple console app here which demonstrates the most basic operations: Creation Retrieval by Id Querying Updating Deletion Begin by creating a new Visual Studio solution and add a Console Application project to it...

In stable Rust you create a Box by using the Box::new function. let boxed_int: Box<i32> = Box::new(1);

Because Boxes implement the Deref<Target=T>, you can use boxed values just like the value they contain. let boxed_vec = Box::new(vec![1, 2, 3]); println!("{}", boxed_vec.get(0)); If you want to pattern match on a boxed value, you may have to dereference the box manually. struct...

If you try and create a recursive enum in Rust without using Box, you will get a compile time error saying that the enum can't be sized. // This gives an error! enum List { Nil, Cons(i32, List) } In order for the enum to have a defined size, the recursively contained value must be in...

# Enqueue a job to be performed as soon as the queuing system is free. GuestsCleanupJob.perform_later guest

case thing of Cat -> meow Bike -> ride Sandwich -> eat _ -> Debug.crash "Not yet implemented" You can use Debug.crash when you want the program to fail, typically used when you're in the middle of implementing a case ex...

The visible binding will hide an element by applying style="display: none;" to it when the binding evaluate as falsey. <input type="text" data-bind="textInput: name"> <span class="error" data-bind="visible: isInvalid">Required!</span&...

The example assumes you have successfully run and fully understand the tutorial of MNIST(Deep MNIST for expert). %matplotlib inline import matplotlib.pyplot as plt # con_val is a 4-d array, the first indicates the index of image, the last indicates the index of kernel def display(con_val, kern...

python-bsonjs does not depend on PyMongo and can offer a nice performance improvement over json_util: bsonjs is roughly 10-15x faster than PyMongo’s json_util at decoding BSON to JSON and encoding JSON to BSON. Note that: to use bsonjs effectively, it is recommended to work directly with Ra...

new Vue({ el:"#app", data:{ foo: "bar" }, methods:{ doSomethingAsynchronous(){ setTimeout(function(){ // This is wrong! Inside this function, // "this" refers to the window object. this.foo = "baz"; ...

You can bind the callback function. new Vue({ el:"#star-wars-people", data:{ people: null }, mounted:function(){ $.getJSON("http://swapi.co/api/people/", function(data){ this.people = data.results; }.bind(this)); } })

Opening a stream fopen opens a file stream handle, which can be used with various functions for reading, writing, seeking and other functions on top of it. This value is of resource type, and cannot be passed to other threads persisting its functionality. $f = fopen("errors.log", "a...

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...

RubyInline is a framework that lets you embed other languages inside your Ruby code. It defines the Module# inline method, which returns a builder object. You pass the builder a string containing code written in a language other than Ruby, and the builder transforms it into something that you can ca...