Tutorial by Topics

The Traversable class generalises the function formerly known as mapM :: Monad m => (a -> m b) -> [a] -> m [b] to work with Applicative effects over structures other than lists.

#define [symbol] // Defines a compiler symbol. #undef [symbol] // Undefines a compiler symbol. #warning [warning message] // Generates a compiler warning. Useful with #if. #error [error message] // Generates a compiler error. Useful with #if. #line [line number] (file name) // Overrides the co...

http.ServeMux provides a multiplexer which calls handlers for HTTP requests. Alternatives to the standard library multiplexer include: Gorilla Mux

Introduction to Algorithms Algorithms are ubiquitous in Computer Science and Software Engineering. Selection of appropriate algorithms and data structures improves our program efficiency in cost and time. What is an algorithm? Informally, an algorithm is a procedure to accomplish a specific ta...

Cat *cat = [[Cat alloc] init]; // Create cat object of type Cat Dog *dog = [[Dog alloc] init]; // Create dog object of type Dog NSObject *someObject = [NSObject alloc]; [someObject init]; // don’t do this XYZObject *object = [XYZObject new]; // Use new to create objects if NO arguments...

This topic is meant to show a general way to call the Twitch API without OAuth. You can call any APIs found in the Twitch REST API documentation using this pattern. You would simply change the URL to the correct endpoint. A Client-ID is required for all calls to the Twitch API. In these examples,...

The WebCrypto APIs are usually only available on "secure" origins, meaning that the document must have been loaded over HTTPS or from the local machine (from localhost, file:, or a browser extension). These APIs are specified by the W3C Web Cryptography API Candidate Recommendation. ...

The dynamic keyword declares a variable whose type is not known at compile time. A dynamic variable can contain any value, and the type of the value can change during runtime. As noted in the book "Metaprogramming in .NET", C# does not have a backing type for the dynamic keyword: The...

TypeScript aims to be a superset of JavaScript that transpiles to JavaScript. By generating ECMAScript compliant code, TypeScript can introduce new language features while retaining compatibility with existing JavaScript engines. ES3, ES5 and ES6 are currently supported targets. Optional types ar...

Java provides a mechanism, called object serialization where an object can be represented as a sequence of bytes that includes the object's data as well as information about the object's type and the types of data stored in the object. After a serialized object has been written into a file, it can ...

The Model-View-Controller (MVC) architectural pattern separates an application into three main components: the model, the view, and the controller. The ASP.NET MVC framework provides an alternative to the ASP.NET Web Forms pattern for creating Web applications. The ASP.NET MVC framework is a light...

Accessibility in iOS allows users with hearing disabilities and visual impairments to access iOS and your application by supporting various features like VoiceOver, Voice Control, White on Black, Mono Audio, Speech to Text and so on. Providing Accessibility in the iOS app means making the app usable...

Generic code enables you to write flexible, reusable functions and types that can work with any type, subject to requirements that you define. You can write code that avoids duplication and expresses its intent in a clear, abstracted manner. Generics are one of the most powerful features of Swi...

There currently aren't any installation packages provided for Bosun or Scollector, only binaries on the Bosun release page. It is up to the end user to find the best way to deploy the files and run them as a service.

Microsoft Excel includes a comprehensive macro programming language called VBA. This programming language provides you with at least three additional resources: Automatically drive Excel from code using Macros. For the most part, anything that the user can do by manipulating Excel from the user...