Anatomy

MSIX Packaging

MSIX is Microsoft's modern Windows app packaging format that unifies MSI, APPX, ClickOnce, and App-V into a single container with clean install/uninstall and d…

ActiveX Controls with MFC

How MFC's COleControl base class and the MFC ActiveX Control Wizard produce reusable OCX controls with properties, methods, events, and property pages, and how…

Message Maps

How MFC's message-map macros build a static dispatch table that replaces a hand-written WndProc, plus how command routing and UI updates work on top of it.

Styles and Setters

Learn how the Style element and Setter objects apply consistent property values across controls, including BasedOn inheritance and triggers.

Project and Solution Structure

How .csproj project files and .sln solution files organize .NET code, dependencies, and multi-project applications.

Adaptive Cards

Adaptive Cards are a JSON-based UI format for rendering rich, interactive content consistently across bots, tabs, and message extensions in Teams.

DHCP Scopes and Reservations

Go deeper into configuring DHCP scopes, exclusions, reservations, and options so devices get consistent, conflict-free addressing.

Migrations Fundamentals

Learn how EF Core migrations track model changes and generate versioned database schema updates while preserving existing data.

Writing Your First Test

A hands-on walkthrough of writing, running, and understanding your first Jest test file.

Request and Response Anatomy

A breakdown of the parts that make up an HTTP request (URL, headers, body) and response (status line, headers, body) as seen in Postman.

Your First Cypress Test

Write, run, and understand a complete Cypress spec file from scratch, covering describe/it blocks, commands, and assertions.

DAG Definition Basics

Learn how Apache Airflow DAGs are structured as Python files, parsed by the scheduler, and how to define one correctly with dag_id, schedule, and default_args.

Your First DAG

A hands-on walkthrough of writing, testing, and triggering your first Apache Airflow DAG, covering DAG anatomy and task dependencies.

The dbt Project Structure

A tour of a dbt project's folders and configuration files, and the staging/intermediate/marts convention used to organize models.

Building an Approval Workflow

A step-by-step walkthrough of building a multi-stage approval flow in Power Automate, from the trigger through the Approvals connector to the final outcome han…

Units and Modular Programming

Learn how Pascal's unit system lets you split large programs into reusable, separately-compiled modules with clean interfaces.

Your First Apex Class

A hands-on walkthrough of writing a simple Apex class, covering class structure, methods, access modifiers, static vs instance members, and how to test it.

sed Substitution Basics

A practical guide to the s command — sed's find-and-replace engine — covering delimiters, flags, backreferences, and the ampersand.

Substitute Command Flags

The flags that follow the sed substitute command control how many matches are replaced, whether matching is case-insensitive, and what happens after the replac…

Functions and Visibility Modifiers

Understand how Solidity functions are declared and the four visibility levels — public, external, internal, and private — plus state mutability keywords like v…

Solidity Syntax and Variables

Understand Solidity's file structure, the difference between state, local, and global variables, and how visibility and data location affect where values live…

Your First Objective-C Program

Writing, compiling, and running a first Objective-C 'Hello, World!' program from the terminal.

R Markdown Basics

Learn how to combine R code, output, and narrative text into reproducible documents, reports, and slides using R Markdown.

Your First D Program

Write, compile, and run your first D program, and understand the module, import, and main() concepts every D file relies on.