Tutorial by Examples: pt

You can create a custom exception and throw them during the execution of your function. As a general practice you should only throw an exception when your function could not achieve its defined functionality. Private Function OpenDatabase(Byval Server as String, Byval User as String, Byval Pwd as S...

The Z80 has no Interrupt table like modern processors. The Interrupts all execute the same code. In Interrupt Mode 1, they execute the code in a specific unchangeable location. In Interrupt Mode 2, they execute the code from the Pointer register I points to. The Z80 has got a timer, that triggers t...

Django is a full stack, feature rich web development framework. It bundles a lot of functionality together to provide a common, quick and productive experience for web developers. Django projects consist of common settings, and one or more applications. Each application is a set of functionality al...

A view is any piece of code that responds to a request and returns a response. Views normally return templates along with a dictionary (called the context) which usually contains data for placeholders in the template. In django projects, views are located in the views.py module of applications. Th...

In django, a template is simply a file that contains special tags which may be replaced by data from the view. The canonical template example would be: <strong>Hello {{ name }}, I am a template!</strong> Here, the string {{ name }} identifies a placeholder that may be replaced by a ...

In django, there is a url mapper which maps URLs to specific functions (views) which return responses. This strict separation between the file system layout and the URL layout allows great flexibility when writing applications. All url patterns are stored in one or more urls.py files, and there is ...

When the temp table is created by itself, it will remain while the connection is open. // Widget has WidgetId, Name, and Quantity properties public async Task PurchaseWidgets(IEnumerable<Widget> widgets) { using(var conn = new SqlConnection("{connection string}")) { ...

Objective: Use SignalR for notification between Web API, and TypeScript/JavaScript based Web App, where Web API and the Web App is hosted in different domain. Enabling SignalR and CORS on Web API: Create a standard Web API project, and install the following NuGet packages: Microsoft.Owin.Cors ...

... "angularCompilerOptions": { "genDir": "./ngfactory" } ... This is the output folder of the compiler.

At its core a perceptron model is one of the simplest supervised learning algorithms for binary classification. It is a type of linear classifier, i.e. a classification algorithm that makes its predictions based on a linear predictor function combining a set of weights with the feature vector. A ...

In this example I will go through the implementation of the perceptron model in C++ so that you can get a better idea of how it works. First things first it is a good practice to write down a simple algorithm of what we want to do. Algorithm: Make a the vector for the weights and initialize it ...

(ns so-doc.events) (enable-console-print!) (defn click-event [] (println "Button clicked")) (defn load-event [] (println "Page loaded!") (.addEventListener (.getElementById js/document "btn") "click" click-event false)) (.addEventListener ...

Show how to use cv::VideoCapture with e.g. a webcam. Capturing frames from webcam and display it. Here is the example code: #include <iostream> #include "opencv2/highgui/highgui.hpp" #include "opencv2/imgproc/imgproc.hpp" #include "opencv2/core/core.hpp" ...

Interceptors require the IInterceptor interface. Any public method within the intercepted class will be intercepted (including getters and setters) public class MyInterceptor : IInterceptor { public void Intercept(IInvocation invocation) { //Calls the next method in the chain - T...

You can make a URI parameter optional by adding a question mark to the route parameter. You can also specify a default value by using the form parameter=value. public class BooksController : Controller { // eg: /books // eg: /books/1430210079 [Route(“books/{isbn?}”)] public Act...

This example shows how to take image and display it correctly on the Android device. Firstly we have to create sample application with one button and one imageview. Once user clicks on the button camera is launched and after user selects picture it will be displayed with the proper orientation on ...

In this example, I created a form which is used to register a new user. In the options passed to the form, I give the different roles a user can have. Creating a reusable class for my form with configured data class and an extra option that fills the choice field to pick a userrole: class UserType...

By default the ArrayAdapter creates a view for each array item by calling toString() on each item and placing the contents in a TextView. Example: ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, myStringArray); where androi...

The following is the default code snippet for the BundleConfig.cs file. using System.Web.Optimization; public class BundleConfig { // For more information on Bundling, visit http://go.microsoft.com/fwlink/?LinkId=254725 public static void RegisterBundles(BundleCollection bundles...

Append the following command to the Codeship setup commands: meteor npm run mgp Now, we need to give Codeship access to these private repositories. There is a Codeship documentation article describing this process in detail but here are the steps that you have to take for Github: Create a new...