Tutorial by Examples: in

We can create loops in latex. They are similar but not as customizable as loops in other programming languages. One alternative to use loops are @loops. If we use a command which includes "@" in its name, we must be put it between \makeatletter and \makeatother. It is not allowed to use th...
Loops are useful in Tikz. The following code draws a clock without numbers: \documentclass{article} \usepackage{ifthen} \usepackage{intcalc} \usepackage{tikz} \newcounter{num} \begin{document} \begin{tikzpicture} \makeatletter \setcounter{num}{1} \newcounter{angle} ...
You can create custom dialogs which contains many component and perform many functionality on it. It behaves like second stage on owner stage. In the following example an application that shows person in the main stage tableview and creates a person in a dialog (AddingPersonDialog) prepared. GUIs c...
With a simple for loop, all zip archives in a directory can be extracted. for (i in dir(pattern=".zip$")) unzip(i) The dir function produces a character vector of the names of the files in a directory matching the regex pattern specified by pattern. This vector is looped through w...
In a terminal run sudo apt-get install maven Once the install is over check that it works correctly with mvn -v the output should look like: Apache Maven 3.3.9 Maven home: /usr/share/maven Java version: 1.8.0_121, vendor: Oracle Corporation Java home: /usr/lib/jvm/java-8-openjdk-amd64/j...
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
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...
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...
Suppose we'd like to wrap the Google Maps JavaScript API google.maps: @JS('google.maps') library maps; import "package:js/js.dart"; @JS() class Map { external Map(Location location); external Location getLocation(); } We now have the Map Dart class which corresponds to t...
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...
In this example, we use this database: "your-project-name" : { "users" : { "randomUserId1" : { "display-name" : "John Doe", "gender" : "male" } "randomUserId2" :...
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...
import android.os.Bundle; import android.os.Handler; import android.support.v7.app.AppCompatActivity; import android.support.v7.widget.LinearLayoutManager; import android.support.v7.widget.RecyclerView; import android.support.v7.widget.Toolbar; import android.util.Log; import android.widget.T...
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 ...
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 ...

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