Tutorial by Examples: ti

Here we give an example of ISP violation and then refactor that violation. Without talking unnecessary things let's jump into the code. ISP violation : public interface IMessage{ IList<string> ToAddress {get; set;} IList<string> BccAddresses {get; set;} string MessageBody {get; s...

A docstring is a multi-line comment used to document modules, classes, functions and methods. It has to be the first statement of the component it describes. def hello(name): """Greet someone. Print a greeting ("Hello") for the person with the given name. &...

First Select Or Create a database. > use mydb switched to db mydb Using db.createCollection("yourCollectionName") method you can explicitly create Collection. > db.createCollection("newCollection1") { "ok" : 1 } Using show collections command see all col...

All documents from students collection. > db.students.find().pretty(); { "_id" : ObjectId("58f29a694117d1b7af126dca"), "studentNo" : 1, "firstName" : "Prosen", "lastName" : "Ghosh", "age" ...

MongoDB's db.collection.drop() is used to drop a collection from the database. First, check the available collections into your database mydb. > use mydb switched to db mydb > show collections newCollection1 newCollection2 newCollection3 system.indexes Now drop the collection with...

Virtual Environment tool (virtualenv) is used to isolate different projects and their dependencies by creating individual python environments for each of them. It's like installing a package locally (and not globally), similar to npm package installation option. Following is an example to install ...

Ajax calls, request and retrieve data for giving the user a sense of a better interactive user interface experience. This article will show you how to use jQuery and send data through Ajax calls. For this example, we’re going to POST the following JavaScript object to our server. var post = { ...

Prerequisite A running MongoDB server, more details on that here. Setting Up a Java Project The MongoDB Java Driver is supplied as a JAR file and can be included in a project just like any other JAR. For example: Maven: add an entry to the <dependencies> section of your pom.xml. &lt...

In GraphQL the Schema defines the root execution queries and mutations as well as the types for your data. Schema Object Type The Person type has two fields, one is a standard Scalar type and the other represents a relationship to a list of other Person types that are 'friends'. Linking other type...

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The basic syntax of find() method with projection is as follows > db.COLLECTION_NAME.find({},{KEY:1}); If you want to show all documents without the age field then the command is as follows db.people.find({},{age : 0}); If you want to show all documents the age field then the command is a...

In MongoDB, projection means selecting only the necessary data rather than selecting whole of the data of a document. The basic syntax of find() method with projection is as follows > db.COLLECTION_NAME.find({},{KEY:1}); If you want to to show all document without the age field then the comm...

Detailed instructions on getting optimization set up or installed.

To register your methods, the class containing the EventHandler(s) must implement the Listener interface. import org.bukkit.event.Listener; public final class ListenerClass implements Listener { } You need to register the event listener by adding the following call to your onEnable method in...

When using the .get() method whatever is in the entry widget will be converted into a string. For example, regardless of the type of input(It can be a number or sentence), the resulting outcome will be a string. If the user types 4 the output will be "4" as in a string. To get an int from ...

Creating an event listener in Forge is very similar to creating one in Bukket. Creating the listener class requires a lot less. There's no interface to implement or other imports. public class ListenerClass { } //perfectly valid event listener class Registering it requires passing the instance ...

public static MvcHtmlString DatePickerFor<TModel, TProperty>(this HtmlHelper<TModel> htmlHelper, Expression<Func<TModel, TProperty>> expression, object htmlAttributes) { var sb = new StringBuilder(); var metaData = ModelMetadata.FromLambdaExpression(expression, htm...

In order to install asyncio: pip install asyncio Notice that python asyncio requires Python 3.3 or later. This module became part of the Python standard library since Python 3.4.

Sometimes you need to create your own Event, one that other plugins can listen to (Vault, among other plugins, does this) and even cancel. Bukkit's Event API allows this to be possible. All you need to do is make a new class, have it extend Event, add the handlers and the attributes your event needs...

var config = {}; var timeout = 120000; config.framework = 'jasmine2'; config.allScriptsTimeout = timeout; config.getPageTimeout = timeout; config.jasmineNodeOpts.isVerbose = true; config.jasmineNodeOpts.defaultTimeoutInterval = timeout; config.specs = ['qa/**/*Spec.js']; config.capabilitie...