Tutorial by Topics

Delphi provided Runtime Type Information (RTTI) more than a decade ago. Yet even today many developers aren't fully aware of its risks and benefits. In short, Runtime Type Information is information about an object's data type that is set into memory at run-time. RTTI provides a way to determine i...

This documentation section focuses on developing against the Amazon Web Services (AWS) Simple Storage Service (S3). S3 is truly a simple service to interact with. You create S3 "buckets" which can contain zero or more "objects." Once you create a bucket, you can upload files or a...

Firebase launched its beta release of Cloud Functions for Firebase which is similar to using of Cloud Functions on Google Cloud Platform. Cloud Functions is a hosted, private, and scalable Node.js environment where you can run JavaScript code. Firebase SDK for Cloud Functions integrates the Firebas...

Amazon Rekognition is a service that makes it easy to add image analysis to your applications. With Rekognition, you can detect objects, scenes, and faces in images. You can also search and compare faces. Rekognition’s API enables you to quickly add sophisticated deep learning-based visual search an...

Also known as arrow macros, threading macros convert nested function calls into a linear flow of function calls.

This document gives various basic functionalities offered by clojure. There is no explicit dependency needed for this and comes as a part of org.clojure.

In the conventional JS there are no class instead we have prototypes. Like the class, prototype inherits the properties including the methods and the variables declared in the class. We can create the new instance of the object when ever it is necessary by , Object.create(PrototypeName); (we can giv...

actually its so simple: Opt-In approach says properties that are considered to be part of DataContract must be explicitly marked otherwise will be ignore, while Opt-Out means all of the properties will be assumed to be part of the DataContract unless marked explicitly.

Accessing rows in a dataframe using the DataFrame indexer objects .ix, .loc, .iloc and how it differentiates itself from using a boolean mask.

To get syntax highlighting in your editor (e.g. VS Code) you'll need to download typing information for the modules that you use in your project. Say for example you use React and ReactDOM in your project, and you want to get highlighting and Intellisense for them. You will need to add the types...

Validation is the process of validating/verifying the user entries against some criteria. The main purpose is to ensure that the user entries are matching with the policy of the system. For example, if a site allow visitors below an age of 50, then the validation to ensure the user entered age ...

This document covers the different components that make up a .NET Core distribution and how they are versioned. This document currently covers the 1.x releases. How components in .NET Core are versioned. Components .NET Core consists of multiple components that are each versioned independ...

Its very easy to maintain localization nodejs express

Autofac is an IoC container for Microsoft .NET 4.5, Silverlight 5, Windows Store apps, and Windows Phone 8 apps. It manages the dependencies between classes so that applications stay easy to change as they grow in size and complexity. This is achieved by treating regular .NET classes as component...

Usage of socket extension implements a low-level interface to the socket communication functions based on the popular BSD sockets, providing the possibility to act as a socket server as well as a client.

Important Note Apple has highly discouraged use of both navigation styles in one controller, and this may result in an app rejection. Currently, the preferred way is to use hierarchical style rather than page based, as used in many more Apple apps than before.

The idea of one to many (1:M) concerns the joining of rows to each other, specifically cases where a single row in one table corresponds to many rows in another. 1:M is one-directional, that is, any time you query a 1:M relationship, you can use the 'one' row to select 'many' rows in another table,...

This topic shows information on how to prepare your Xamarin.Android app for release mode and how to optimize it.

Parameterization is the creation of different data sets for different users in the same test script. For example, running multiple users with different credentials in the same script. This makes it one of the main aspects in performance tests creation.