UIWindow

A window is an instance of the UIWindow class and it is the topmost element of any application UI's hierarchy. It doesn't draw any visual object and can be considered as a blank container for the UI elements called views. An application must have at least one window that normally fills the entire screen.

Rust: Ownership

Rust neither uses garbage collection nor automatic reference counting nor manual memory management. It has chosen a rather different approach: memory is managed through a system of ownership with a set of rules that the compiler checks at compile time.

An intro to JavaScript Modules

Modules divide programs into clusters of code that, by some criterion, belong together. Most programming languages have a scope level between global (everyone can see it) and local (only this function can see it). JavaScript does not. The only way to create a new scope in JavaScript is with a function. Hence, modules are god sent.