Lua
Lua is a lightweight, high-level, multi-paradigm scripting language designed for embedded use in applications. It is known for its simplicity, efficiency, and extensibility, often used as a configuration or extension language in games, software, and systems. Lua features dynamic typing, garbage collection, and a small footprint, making it ideal for integration into larger projects.
Developers should learn Lua when they need a fast, embeddable scripting language for extending applications, such as in game development (e.g., with engines like Roblox or World of Warcraft), or for configuration and automation in software like Redis or Nginx. It is particularly useful in scenarios requiring high performance with minimal resource usage, such as in embedded systems or real-time applications.