Tutorial by Examples: w

From the GitHub repo of RxJava, RxJava is a Java VM implementation of Reactive Extensions: a library for composing asynchronous and event-based programs by using observable sequences. It extends the observer pattern to support sequences of data/events and adds operators that allow you to compose seq...

There are other API frameworks out there for Django. You need to assess the options available and decide for yourself. That said, here are some common reasons for tastypie. You need an API that is RESTful and uses HTTP well. You want to support deep relations. You DON’T want to have to write yo...

Tastypie is a reusable app (that is, it relies only on its own code and focuses on providing just a REST-style API) and is suitable for providing an API to any application without having to modify the sources of that app. Not everyone’s needs are the same, so Tastypie goes out of its way to provide...

There are three main ways to do sequential plot or animations: plot(x,y), set(h , 'XData' , y, 'YData' , y) and animatedline. If you want your animation to be smooth, you need efficient drawing, and the three methods are not equivalent. % Plot a sin with increasing phase shift in 500 steps x = lin...

When performing data science tasks, it’s common to want to use data found on the internet. You’ll usually be able to access this data via an Application Programming Interface(API) or in other formats. However, there are times when the data you want can only be accessed as part of a web page. In case...

While using scrollviews in storyboard it's better to calculate content size according to number of views present in scrollview rather than giving content size programatically with static value. Here are the steps to get content size dynamically. Step 1 : Add Scrollview to view in storyboard and ...

A simple OGL 4.0 GLSL shader program that shows that shows how to add details with tessellation shader to the geometry. The program is executed with a python script. To run the script, PyOpenGL and NumPy must be installed. The basic mesh in this example is an icosahedron that consists of 20 triang...

It's highly recommended to use ESLint in your project on react-native. ESLint is a tool for code validation using specific rules provided by community. For react-native you can use rulesets for javascript, react and react-native. Common ESLint rules with motivation and explanations for javascript ...

The Xamarin Forms Entry control does not have a MaxLength property. To achieve this you can extend Entry as below, by adding a Bindable MaxLength property. Then you just need to subscribe to the TextChanged event on Entry and validate the length of the Text when this is called: class CustomEntry ...

animated_android_dialog_box.xml <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" android:padding="16dp"> &...

Here is an example of image pulling using Go and Docker Engine API and the same progress bars as the ones shown when you run docker pull your_image_name in the CLI. For the purposes of the progress bars are used some ANSI codes. package yourpackage import ( "context" "en...

When using cURL for some queries to the Docker API, it might be a bit tricky to pass some complex structures. Let's say, getting a list of images allows using filters as a query parameter, which have to be a JSON representation of map[string][]string (about the maps in Go you can find more here). H...

Configure For web request you can also use library axios. It's easy to configure. For this purpose you can create file axios.js for example: import * as axios from 'axios'; var instance = axios.create(); instance.defaults.baseURL = serverURL; instance.defaults.timeout = 20000;] //... //and...

To prepare the ios build first we need to create the cordova project. lets create the project by the command line tool. cordova create hello com.example.hello "HelloWorld" Go to the project dir by cd hello. we are now in the project directory, lets check which platforms are availa...

Write message in messages.properties welcome.message=Hello, {0}! Replace {0} with the user name inside thymeleaf tag <h3 th:text="#{welcome.message(${some.variable})}">Hello, Placeholder</h3>

Remote Power supply simulation Since we don't have a real remote power supply hardware, we are going to simulate it using python program. Basic idea about RPS Actually remote power supply has a http server. User can send commands to turn ON/OFF power supply using http request. We are going...

data newclass(keep=first_name sex weight yearborn); set sashelp.class(drop=height rename=(name=first_name)); yearborn=year(date())-age; if yearborn >2002; run; Data specifies the target data set. Keep option specifies columns to print to target. Set specifies source data set. Drop s...

Install by using npm install --save react-native-router-flux In react-native-router-flux, each route is called a <Scene> <Scene key="home" component={LogIn} title="Home" initial /> key A unique string that can be used to refer to the particular scene. componen...

This example will help to verify the given time is within a period or not. To check the time is today, We can use DateUtils class boolean isToday = DateUtils.isToday(timeInMillis); To check the time is within a week, private static boolean isWithinWeek(final long millis) { return System.c...

Developers often need to design web sites that allow users to upload a CSV file. Usually there is no reason to save the actual CSV file since the data will processed and/or stored in a database once uploaded. However, many if not most, PYTHON methods of parsing CSV data requires the data to be rea...