Tutorial by Examples: co

To connect to a mongo database from node application we require mongoose. Installing Mongoose Go to the toot of your application and install mongoose by npm install mongoose Next we connect to the database. var mongoose = require('mongoose'); //connect to the test database running on defau...

With Mongoose, everything is derived from a Schema. Lets create a schema. var mongoose = require('mongoose'); var Schema = mongoose.Schema; var AutoSchema = new Schema({ name : String, countOf: Number, }); // defining the document structure // by default the collection...

You can use plugman command to install/uninstall custom cordova plugins. To install plugman npm install -g plugman Install plugin command syntax: plugman <install|uninstall> --platform <ios|android|blackberry10|wp8> --project <directory> --plugin <name|url|path> Exa...

XML Example The below configuration configures two appenders (log output). The first logs to standard system output (console) and the other logs to file. In this example, the location of the file can be set statically in configuration (appender file) or dynamically via maven filtering feature (<...

The following table compares the features available(1) in EF Core and EF6.x. It is intended to give a high level comparison and does not list every feature, or attempt to give details on possible differences between how the same feature works. Creating a ModelEF6.xEF Core 1.0.0Basic modelling (cla...

Using java.lang.Runnable we make our "Hello World!" example available to Java users with versions dating all the way back to the 1.2 release: import javax.swing.JFrame; import javax.swing.SwingUtilities; import javax.swing.WindowConstants; public class Main { public static void ...

First Execute CREATE EXTENSION DBLINK; Then INSERT INTO <SCHEMA_NAME>.<TABLE_NAME_1> SELECT * FROM DBLINK( 'HOST=<IP-ADDRESS> USER=<USERNAME> PASSWORD=<PASSWORD> DBNAME=<DATABASE>', 'SELECT * FROM <SCHEMA_NAME>.<TABLE_NAME_2...

<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); class Cron extends CI_Controller { /** * This is default constructor of the class */ public function __construct() { parent::__construct(); $this->load->library('input'...

In application/hooks folder, create a file with name Blocker.php and paste the below code. <?php class Blocker { function Blocker(){ } /** * This function used to block the every request except allowed ip address */ function requestBlocker(){ ...

Apache JMeter segregated all the components into following groups based on their functionality: Test Plan: Starting point for scripting. JMeter saves the Test Plan in .jmx format. You add components to the Test Plan by Right Click on the Test Pand and navigating to the component you want to add. ...

In mysqld.cnf or equivalent: [mysql] prompt = '\u@\h [\d]> ' This achieves a similar effect, without having to deal with .bashrc's.

When creating the project You should check "Include UI Tests" in the project creation dialog. After creating the project If you missed checking UI target while creating project, you could always add test target later. Setps: While project open go to File -> New -> Target Fi...

To compute the hashes of relatively small blocks of data using different algorithms: final MessageDigest md5 = MessageDigest.getInstance("MD5"); final MessageDigest sha1 = MessageDigest.getInstance("SHA-1"); final MessageDigest sha256 = MessageDigest.getInstance("SHA-256&...

To compute a signature: final PrivateKey privateKey = keyPair.getPrivate(); final byte[] data = "FOO BAR".getBytes(); final Signature signer = Signature.getInstance("SHA1withRSA"); signer.initSign(privateKey); signer.update(data); final byte[] signature = signer.sign();...

After you have a running cluster you can manage it with the kubectl command. Most of the commands you can get with the kubectl --help command, but I show you the most common commands, for manage and getting info about your cluster, nodes, pods, services and labels. For getting information about t...

In the build.sbt file (or where the project is defined if it is in another location), add the following setting: scalacOptions += "-language:experimental.macros" For instance, a project might be defined like this: lazy val main = project.in(file(".")) // root project .se...

When the last command in an interactive bash instance is done, the evaluated PS1 variable is displayes. Before actually displaying PS1 bash looks whether the PROMPT_COMMAND is set. This value of this var must be a callable program or script. If this var is set this program/script is called BEFORE th...

Swift import Contacts // Creating a mutable object to add to the contact let contact = CNMutableContact() contact.imageData = NSData() // The profile picture as a NSData object contact.givenName = "John" contact.familyName = "Appleseed" let homeEmail = CNLabele...

Closely correlated features may add variance to your model, and removing one of a correlated pair might help reduce that. There are lots of ways to detect correlation. Here's one: library(purrr) # in order to use keep() # select correlatable vars toCorrelate<-mtcars %>% keep(is.numeric) ...

To externalise a distributed systems configuration Spring Cloud Config provides server and client-side support needed for externalising and centralising your configuration. To get started quickly you could use Spring Initializr to bootstrap your server. Add the Config Server dependency to automatic...