Tutorial by Examples: o

General Properties: An Azimuthal Equidistant projection is best recognized when used in polar areas. It is used in the UN's emblem. From the center point, angle and distance are preserved. But the projection will distort shape and area to achieve this, especially as one moves further from the cente...

When a navigation property exist on a model, Entity Framework will automatically create a Foreign Key column. If a specific Foreign Key name is desired but is not contained as a property in the model, it can be set explicitly using the Fluent API. By utilizing the Map method while establishing the F...

You can print log message in the terminal using console.log(). To do so, open a new terminal and run following command for Android: react-native log-android or following command if you are using iOS: react-native log-ios You will now start to see all the log message in this terminal

Goto accepts the use of variable value to act as the label to goto. Example: @echo off echo a = 1 echo b = 2 set /p "foo=Enter option:" goto %foo% However, you should check the input so it will not go to somewhere that does not exist. Going to an undefined label will terminate...

Note in this example we will use PostgreSQL DBMS, but you can use any DBMS We will use a database bd_test witch contain a Schema: sch_test and two tables users and test : CREATE TABLE sch_test.users ( id serial NOT NULL, username character varying, password character varying, CONSTRAI...

BFS can be used to find the connected components of an undirected graph. We can also find if the given graph is connected or not. Our subsequent discussion assumes we are dealing with undirected graphs.The definition of a connected graph is: A graph is connected if there is a path between every p...

HTML: <div class="wrapper"> <div class="content"></div> </div> CSS: .wrapper{ min-height: 600px; } .wrapper:before{ content: ""; display: inline-block; height: 100%; vertical-align: middle; } .content { display...

The new Bootstrap 4 Navbar Component is improved over it’s Bootstrap 3.x predecessor. In Bootstrap 4, the Navbar is responsive by default and utilizes flexbox to make alignment of Navbar content much easier. It’s also a simple matter of using the new navbar-toggleable-* classes to change the Navbar ...

Suppose we'd like to invoke the JavaScript function JSON.stringify which receives an object, encodes it into a JSON string and returns it. All we'd have to do is write the function signature, mark it as external and annotate it with the @JS annotation: @JS("JSON.stringify") external St...

It's common practice in JavaScript to pass object literals to functions: // JavaScript printOptions({responsive: true}); Unfortunately we cannot pass Dart Map objects to JavaScript in these cases. What we have to do is create a Dart object that represents the object literal and contains all of...

Install pip : $ pip install django-cassandra-engine Add Getting Started to INSTALLED_APPS in your settings.py file: INSTALLED_APPS = ['django_cassandra_engine'] Cange DATABASES setting Standart: Standart DATABASES = { 'default': { 'ENGINE': 'django_cassandra_engine', ...

Go to https://www.blender.org/download/ Choose your operating system Click the proper mirror next to the version of blender for your operating system. You can usually just click the mirror closest to your current location. (more info) Also, at the bottom of the page are also...

Note: You need to know which data referenced by getReference() first before you can completely understand this example. There are three common method to get your data from Firebase Realtime Database: addValueEventListener() addListenerForSingleValueEvent() addChildEventListener() When w...

Step 1 - installing VirtualBox Download and install VirtualBox according to your operating system. , it is required to run Genymotion. Step 2 - downloading Genymotion Go to the Genymotion download page and download Genymotion according to your operating system. Note: you will need to create a ...

Many developers have this problem when they work on huge projects, especially if they work on some modular CMS on plugins, addons, components etc. Here is solution for safe session start where if first checked PHP version to cover all versions and on next is checked if session is started. If session...

import sys from PyQt4 import QtGui def window(): app = QtGui.QApplication(sys.argv) w = QtGui.QWidget() b = QtGui.QLabel(w) b.setText("Hello World!") w.setGeometry(100,100,200,50) b.move(50,20) w.setWindowTitle("PyQt") w.show() sys.exit(app...

Throwable has two direct subclasses, Exception and Error. While it's possible to create a new class that extends Throwable directly, this is inadvisable as many applications assume only Exception and Error exist. More to the point there is no practical benefit to directly subclassing Throwable, as ...

If developers want to test Google Maps or any other Google service like Gmail,Youtube, Google drive etc. then they first need to install Google framework on Genymotion. Here are the steps:- 4.4 Kitkat 5.0 Lollipop 5.1 Lollipop 6.0 Marshmallow 7.0 Nougat 7.1 Nougat (webview patch) Download fro...

Call this function with parameter argument as array with type 'any'. It will return you json string. Json string is used to submit array in web service call as request input parameter in Swift. //----------------------- let array = [["one" : 1], ["two" : 2], ["three" ...

Detailed instructions on getting apache-zookeeper set up or installed.