Tutorial by Examples: reat

CSS div { /* check remarks before usage */ height: 200px; width: 400px; background-image: url(http://lorempixel.com/400/200/nature/4); mask-image: linear-gradient(to top right, transparent 49.5%, white 50.5%), linear-gradient(to top left, transparent 49.5%, white 50.5%), linear-gradient...

Time series data can be stored as a ts object. ts objects contain information about seasonal frequency that is used by ARIMA functions. It also allows for calling of elements in the series by date using the window command. #Create a dummy dataset of 100 observations x <- rnorm(100) #Convert ...

An SKView does not need to fill the whole screen and can share space with other UI controls. You can even have more than one SKView displayed at once if you wish. To create a smaller SKView amongst other controls with Interface Builder, first create a normal ViewController, then drag and drop a new...

Go to the GitHub page for the project where you want to create an issue. Click on Issues . On the top right, click on New Issue. Enter the title of the issue. Enter the body of the issue (including logs, code snippets, etc.) Optional: To view the issue before submitting it, click on preview. ...

In order to use libraries in CodeIgniter, you need to create a library. class Pro { function show_hello_world() { return 'Hello World'; } } In this library, which is called is pro.php, this file must be added to the following path. Path: \xampp\htdocs\project\application\librarie...

This will create a timer to call the doSomething method on self in 5.0 seconds. [NSTimer scheduledTimerWithTimeInterval:5.0 target:self selector:@selector(doSomething) userInfo:nil repeats:NO]; Setting the repeats parameter to false/NO indicates that we...

Go to application/model File name - Home_model.php Inside the file class Home_model extends CI_Model { public $variable; public function __construct() { parent::__construct(); } public function get_data() { $query = $this->db->get('tabl...

ACID tables are supported since hive 0.14 version. Below table supports UPDATE/DELETE/INSERT Below configuration changes required in hive-site.xml. hive.support.concurrency = true hive.enforce.bucketing = true hive.exec.dynamic.partition.mode = nonstrict hive.txn.manager =org.apache.hadoop...

zf{motion} creates a fold that covers the text that "motion" would cover. {count}zF creates a fold that covers "count" lines. {range}fo[ld] creates a fold for the lines in the provided range. All three commands are valid only when foldmethod is set to manual or marker. In ...

By overloading the indexer you can create a class that looks and feels like an array but isn't. It will have O(1) get and set methods, can access an element at index 100, and yet still have the size of the elements inside of it. The SparseArray class class SparseArray { Dictionary<...

One of the most powerful capabilities in Excel is the use of Pivot Tables to sort and analyze data. Using VBA to create and manipulate the Pivots is easier if you understand the relationship of Pivot Tables to Pivot Caches and how to reference and use the different parts of the Tables. At its most ...

> List.repeat 3 "abc" ["abc","abc","abc"] : List String You can give List.repeat any value: > List.repeat 2 {a = 1, b = (2,True)} [{a = 1, b = (2,True)}, {a = 1, b = (2,True)}] : List {a : Int, b : (Int, Bool)}

To create a XML using DOMDocument,basically, we need to create all the tags and attributes using the createElement() and createAttribute() methods and them create the XML structure with the appendChild(). The example below includes tags, attributes, a CDATA section and a different namespace for the...

In PCRE, it doesn't trackback after the first match for a recursion is found. So (?(DEFINE)(aaa|aa|a))(?1)ab doesn't match aab because after it matched aa in the recursion, it never try again to match only a.

Timers are used to perform tasks at specific intervals of time (Do X every Y seconds) Below is an example of creating a new instance of a Timer. NOTE: This applies to Timers using WinForms. If using WPF, you may want to look into DispatcherTimer using System.Windows.Forms; //Timers use the Wi...

The Foundation framework provides the Operation type, which represents a high-level object that encapsulates a portion of work that may be executed on a queue. Not only does the queue coordinate the performance of those operations, but you can also establish dependencies between operations, create c...

public class SignUpActivity extends BaseAppCompatActivity { @BindView(R.id.tIETSignUpEmail) EditText mEditEmail; @BindView(R.id.tIETSignUpPassword) EditText mEditPassword; @Override protected void onCreate(@Nullable Bundle savedInstanceState) { super.onCrea...

CREATE DATABASE LINK dblink_name CONNECT TO remote_username IDENTIFIED BY remote_password USING 'tns_service_name'; The remote DB will then be accessible in the following way: SELECT * FROM MY_TABLE@dblink_name; To test a database link connection without needing to know any of the objec...

class Users::OmniauthCallbacksController < Devise::OmniauthCallbacksController include OmniConcern %w[facebook twitter gplus linkedin].each do |meth| define_method(meth) do create end end end Note: In the part “%w[facebook twitter gplus linkedin]”, you should list ...

module OmniConcern extend ActiveSupport::Concern def create auth_params = request.env["omniauth.auth"] provider = AuthenticationProvider.get_provider_name(auth_params.try(:provider)).first authentication = provider.user_authentications.where(uid: auth_params.uid).first...