Tutorial by Examples: en

Hello friends before start code we have need to declare dependency for access firebase ui component, so here is the dependency which you can put it in your gradel other wise you can add dependency as jar also. compile 'com.firebaseui:firebase-ui-database:0.4.0' Then after we are querying in fire...

An XSD that describe a contact information about a company is given below. <?xml version="1.0" encoding="UTF-8"?> <xs:schema targetNamespace="http://NamespaceTest.com/CommonTypes" xmlns:xs="http://www.w3.org/2001/XMLSchema" ...

This is an example of an attribute that I created to validate that required parameters have been assigned in the request object receive in a POST route. I decided on this approach because the standard ModelState.IsValid approach was not valid. This is because the required attributes vary based on wh...

[HttpPost] [Route("api/Fitbit/Activity/Stats")] public async Task<HttpResponseMessage> ActivityStats(FitbitRequestDTO request) { if (string.IsNullOrEmpty(request.PatientId) || string.IsNullOrEmpty(request.DeviceId)) ret...

On initial startup of your app, the FCM SDK generates a registration token for the client app instance. If you want to target single devices or create device groups, you'll need to access this token by extending FirebaseInstanceIdService. The onTokenRefresh callback fires whenever a new token is g...

// PHYSICS CONSTANTS struct PhysicsCategory { static let None : UInt32 = 0 static let All : UInt32 = UInt32.max static let player : UInt32 = 0b1 // 1 static let bullet : UInt32 = 0b10 // 2 } var nodesToRemove = [SKNode]() /...

A very common use-case in web applications is performing multiple asynchronous (eg. HTTP) requests and gathering their results as they arrive or all of them at once (eg. in Angular2 with the HTTP service). 1. Gathering async responses one by one as they arrive This is typically done with mergeMap(...

In Unit Test layer we usually test the Business Layer functionalities. And in order to do this, we will remove the Data Layer (Entity Framework) dependencies. And the question now is: How can I remove the Entity Framework dependencies in order to unit test the Business Layer functions? And the ans...

The MSDN library contains several different types of documentation which can be used for implementing features. Topic Overviews These are broad overviews of topics intended to provide a general understanding of an API. These overviews also often outline best practices, and implementation strategi...

Finding documentation for a feature is often as simple as a search using a good search engine. If that fails, or if unsure about specific terms, the Windows API Index can help locate specific features. Documentation for methods, interfaces, enumerations and constants can usually be found by searchin...

The documentation for a function is broken down into several sections: Overview Describes what the function is used for. This section will also show information about whether the function is depreciated, or may be unavailable in future versions. Syntax Shows the declaration of the function from ...

Imagine you're testing code that makes a call to this interface, and you want to make sure your retry code is working. public interface DataStore { void save(Data data) throws IOException; } You could do something like this: public void saveChanges_Retries_WhenDataStoreCallFails() { ...

Making a sequence of HTTP requests has two primary reasons: Requests are depending on each other (the result from one requests is required for a consecutive request). We want to spread server load into multiple requests. 1. Making multiple dependent requests This can be performed usi...

Check your current magento version php bin/magento --version Now Add the latest version to your composer. composer require magento/product-community-edition 2.1.6 --no-update Run Composer Update This will ask for the username and password take from your credentials from your marketplace acco...

The compile statement lets you compile programs in Progress ABL: Basic usage: COMPILE hello-world.p SAVE. With a variable: DEFINE VARIABLE prog AS CHARACTER NO-UNDO. prog = "hello.p". COMPILE VALUE(prog) SAVE. There are several options to the COMPILE-statement: SAVE state...

Using async/await in C# applications simplifies multi-threading. This is how you can use async/await in conjunction with a TcpClient. // Declare Variables string host = "stackoverflow.com"; int port = 9999; int timeout = 5000; // Create TCP client and connect // Then get the netstr...

BigDecimal provides static properties for the numbers zero, one and ten. It's good practise to use these instead of using the actual numbers: BigDecimal.ZERO BigDecimal.ONE BigDecimal.TEN By using the static properties, you avoid an unnecessary instantiation, also you've got a literal in you...

Sweave from the utils package allows for formatting code, prose, graphs and tables together in a LaTeX document. Further Resources Knitr and RMarkdown

Consider you have a Parent Frame(Frame-Parent). and 2 child frames(Frame_Son,Frame_Daughter). Lets see various conditions and how to handle. 1.From Parent to Son or Daughter: driver.switchTo().frame("Frame_Son"); driver.switchTo().frame("Frame_Daughter"); 2.From Son to Pa...

This example assumes two servers: dbserver (where our database lives) appclient (where our applications live) FWIW, both servers are SELinux enforcing. First, log on to dbserver Create a temporary directory for creating the certificates. mkdir /root/certs/mysql/ && cd /root/cer...