Tutorial by Examples: o

ETL from web API's with modules json and requests

First, import modules and set connection strings. If you need parameters, you can either put them directly in the URL string (an API in this case) or build them as a dict and pass them to the params argument. import requests import json params = {'id': 'blahblah', 'output': 'json'} # You could ...

python-requests • Sending and receiving JSON

How to share data across multiple devices in Win10 UWP App

To make an app more cohesive, we often need to keep user's personal settings and preferences consistent across multiple devices that have been logged in with one Microsoft account. In this sample, we use roaming data to store and to load UI settings, game process and user info. But the roaming data ...

uwp • Working with Filesystem

Installation using UMD build

A build is also available on npmcdn. You can include the script like this: <script src="https://npmcdn.com/react-router/umd/ReactRouter.min.js"></script> The library will be available globally on window.ReactRouter.

React Router • Getting started with React Router

ways to pass secrets in a container

The not very secure way (because docker inspect will show it) is to pass an environment variable to docker run such as docker run -e password=abc or in a file docker run --env-file myfile where myfile can contain password1=abc password2=def it is also possible to put them in a volume dock...

Docker • passing secret data to a running container

How to connect Realtime database with Android Application

How to implement FirebaseRealTime database in android application. Following is the steps for do it. First install firebase sdk, If you dont know how to install then following is the URL for help. Install Firebase SDK After thet register your project in firbase console, URL of the firbas...

firebase • Firbase Realtime Database with Android

Grid children spanning multiple rows/columns

By using the Grid.RowSpan and Grid.ColumnSpan attached properties, children of a Grid can span multiple rows or columns. In the following example the second TextBlock will span the second and third column of the Grid. <Grid> <Grid.ColumnDefinitions> <ColumnDefinition/&...

wpf • Grid control

Syncing rows or columns of multiple Grids

The row heigths or column widths of multiple Grids can be synchronized by setting a common SharedSizeGroup on the rows or columns to synchronize. Then a parent control somewhere up in the tree above the Grids needs to have the attached property Grid.IsSharedSizeScope set to True. <StackPanel Gri...

wpf • Grid control

Generic httpInterceptor step by step

Create an HTML file with the following content: <!DOCTYPE html> <html> <head> <title>Angular Interceptor Sample</title> <script src="https://code.angularjs.org/1.5.8/angular.min.js"></script> <script src="app.js"></sc...

AngularJS • HTTP Interceptor

Zalgo Text

There is this thing called Zalgo Text which pushes this to the extreme. Here is the first grapheme cluster of the example. It consists of 15 code points: the Latin letter H and 14 combining marks. H̡̫̤̤̣͉̤ͭ̓̓̇͗̎̀ Although this doesn't show up in normal text, it shows that a “character” r...

unicode • Characters can consist of multiple code points

Emoji and flags

A lot of emoji consist of more than one code point. 🇯🇵: A flag is defined as a pair of "regional symbol indicator letters" (🇯 + 🇵) 🙋🏿: Some emoji may be followed by a skin tone modifier: 🙋 + 🏿 😀︎ or 😀️: Windows 10 allows you to specify if an emoji is colored or black/white b...

unicode • Characters can consist of multiple code points

PlayerJoinEvent

public class PlayerJoinListener implements Listener { @EventHandler public void onPlayerJoin(PlayerJoinEvent evt) { Player joined = evt.getPlayer(); String joinedName = joined.getName(); //RETRIEVING THE JOIN MESSAGE ALREADY SET String joinMessage = ev...

bukkit • Player Events

PlayerMoveListener

public class PlayerMoveListener implements Listener { @EventHandler public void onPlayerMove(PlayerMoveEvent evt) { Location from = evt.getFrom(); Location to = evt.getTo(); double xFrom = from.getX(); double yFrom = from.getY(); double zFrom ...

bukkit • Player Events

RedirectToRouteResult

public ActionResult PopulateFoods() { // Redirects to another action method. In this case the index method return RedirectToAction("Index"); } Action methods typically return a result that is known as an action result. The ActionResult class is the base class for all action ...

asp.net-mvc • ActionResult

ContentResult

public ActionResult Hello() { // Returns a user-defined content type, in this case a string. return Content("hello world!"); } Action methods typically return a result that is known as an action result. The ActionResult class is the base class for all action results. The Ac...

asp.net-mvc • ActionResult

JsonResult

public ActionResult LoadPage() { Student result = getFirst(); //Returns a serialized JSON object. return Json(result, JsonRequestBehavior.AllowGet); } Action methods typically return a result that is known as an action result. The ActionResult class is the base class for al...

asp.net-mvc • ActionResult

Place a pin where the user touched the screen with MR.Gestures

Xamarins built in gesture recognizers provide only very basic touch handling. E.g. there is no way to get the position of a touching finger. MR.Gestures is a component which adds 14 different touch handling events. The position of the touching fingers is part of the EventArgs passed to all MR.Gestu...

Xamarin.Forms • Gestures

Populate only a few fields

If you only want the fields houseNum and street in the address field in the final populated doc, use the populate() function as follows in the above two methods, Person.findOne({_id: req.params.id}) .populate('address', 'houseNum street') .exec(function(err, person) { // do somet...

mongoose • Mongoose Population

Socket basics

There are four types of sockets available in POSIX API: TCP, UDP, UNIX, and (optionally) RAW. Unix domain sockets may act like stream sockets or like datagram sockets. Some of endpoint types: struct sockaddr - universal endpoint type. Typically, other concrete endpoint types are converted to thi...

POSIX • Sockets

Model Validation with Custom Attribute

If the built in attributes are not sufficient to validate your model data, then you can place your validation logic in a class derived from ValidationAttribute. In this example only odd numbers are valid values for a model member. Custom Validation Attribute public class OddNumberAttribute : Valid...

asp.net-core • Models

Basic program for signup

Through this example, it will be explained to divide the node.js code into different modules/folders for better undertandibility. Following this technique makes it easier for other developers to understand the code as he can directly refer to concerned file instead of going through whole code. The m...

Node.js • Good coding style