Making

RESTful Services with WCF

Shows how to expose plain REST/JSON endpoints from a WCF service using webHttpBinding, WebGet/WebInvoke, and UriTemplate routing.

Making Your First Request

A step-by-step walkthrough of building and sending your first GET request in Postman, reading the response, and saving the request for reuse.

Conditionals in Pascal

Learn how Pascal's if-then-else and case statements let programs branch based on boolean conditions.

Conditionals in VBA

Learn how VBA evaluates Boolean expressions to branch code using If...Then...Else, ElseIf chains, and Select Case.

Conditionals in VB.NET

Learn how to control program flow in VB.NET using If...Then...Else, Select Case, and logical operators to make decisions based on data.

Maybe and Either

How Haskell uses the Maybe and Either types to represent optional values and recoverable errors explicitly, without null or exceptions.

Authentication and Authorization in GraphQL

Learn how to authenticate requests and enforce field-level authorization in a GraphQL API, and avoid common security pitfalls.

Networking with URLSession

Understand how URLSession performs HTTP requests in Swift, including async/await APIs, request configuration, and handling responses safely.