Tutorial by Examples: r

Below is an example for implementing a Search input box that helps users to search the occurances of a particular value across the datatable. In the below example, #report is the div id of the div that contains the search input box. This function is called as soon as the user enters a value in this...

Showing Basic Example of the View Page in Yii2 For New Learners These are basic classes you must to add to create form using yii2 ActiveForm <?php Use yii\helpers\Html; Use yii\widgets\ActiveForm; The Below line will start the form tag for our form below showing example shows that how to...

Creating summation is quite easy in 3 steps On front panel, Add 2 numeric controls (number 1 and Number 2) and 1 numeric indicator (sum). Switch to block diagram(using CTRL+E) and connect Add block from numeric palette. Wire it to both numeric controls and sum indicator created in step 1. ...

CIM/WMI is most commonly used to query information or configuration on a device. Thof a class that represents a configuration, process, user etc. In PowerShell there are multiple ways to access these classes and instances, but the most common ways are by using the Get-CimInstance (CIM) or Get-WmiObj...

From java tutorial The dictionary definition of polymorphism refers to a principle in biology in which an organism or species can have many different forms or stages. This principle can also be applied to object-oriented programming and languages like the Java language. Subclasses of a class can ...

As example, only for demonstrate HOW-TO use a subquery select statement inside a select statement, suppose we what to find all user that not yet have compile the address (no records exists in the address table): // get an ExpressionBuilder instance, so that you $expr = $this->_em->getExpres...

Let's say that we're given const string input as a phone number to be validated. We could start by requiring a numeric input with a zero or more quantifier: regex_match(input, regex("\\d*")) or a one or more quantifier: regex_match(input, regex("\\d+")) But both of those really f...

You can add different dependencies for a specific product flavor. Just use the <flavorName>Compile 'group:name:x.y.z' syntax: android { ... productFlavors { flavor1 { //..... } flavor2 { //..... } } } ... d...

When Java annotations were first introduced there was no provision for annotating the target of an instance method or the hidden constructor parameter for an inner classes constructor. This was remedied in Java 8 with addition of receiver parameter declarations; see JLS 8.4.1. The receiver param...

AlchemyLanguage's Targeted Sentiment feature can search your content for target phrases and return sentiment information for each result. This example requires AlchemyLanguage service credentials and Node.js Use a command-line interface to install the Watson Developer Cloud Node.js SDK: $...

AlchemyLanguage can detect general concepts referenced in your content. The service returns Linked Data links for each concept and a URL to a relevant website when possible. This example requires AlchemyLanguage service credentials and Node.js Use a command-line interface to install the Wats...

A value_ptr is a smart pointer that behaves like a value. When copied, it copies its contents. When created, it creates its contents. // Like std::default_delete: template<class T> struct default_copier { // a copier must handle a null T const* in and return null: T* operator()(T co...

Add spring-boot-starter-data-jpa dependency to pom.xml. You may skip version tag, if you are using spring-boot-starter-parent as the parent of your pom.xml. The dependency below brings Hibernate and everything related to JPA to your project (reference). <dependency> <group...

Add spring-boot-starter-web dependency to pom.xml. You may skip version tag, if you are using spring-boot-starter-parent as the parent of your pom.xml (reference). <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-star...

If you would like to use vim in a manner similar to sed, you may use the -c flag to run an ex command from the command line. This command will run automatically before presenting the file to you. For example, to replace foo with bar: vim file.txt -c "s/foo/bar" This will open up the fi...

To create the serialVersionUID for a class in Kotlin you have a few options all involving adding a member to the companion object of the class. The most concise bytecode comes from a private const val which will become a private static variable on the containing class, in this case MySpecialCase: ...

// this function add custom interval (5 minutes) to the $schedules function five_minutes_interval( $schedules ) { $schedules['five_minutes'] = array( 'interval' => 60 * 5, 'display' => '5 minutes'; ); return $schedules; } // add a custom in...

The hash codes produced by GetHashCode() method for built-in and common C# types from the System namespace are shown below. Boolean 1 if value is true, 0 otherwise. Byte, UInt16, Int32, UInt32, Single Value (if necessary casted to Int32). SByte ((int)m_value ^ (int)m_value << 8); Char...

Generally, it's not a good idea to use a regular expression to parse a complex structure. But it can be done. For instance, you might want to load data into hive table and fields are separated by comma but complex types like array are separated by a "|". Files contain records with all fiel...

The BukkitRunnable is a Runnable found in Bukkit. It's possible to schedule a task directly from a BukkitRunnable, and also cancel it from inside itself. Important: The time on the tasks is measured in Ticks. A second has 20 ticks. Non-RepeatingTask: JavaPlugin plugin; //Your plugin instance ...