When writing code, you can call any function as long as it’s public, and similarly, you can access any object’s public properties or methods. Usually, access to code is all or none – a piece of code can be either public or private. Access to private code is typically controlled by the upper layer that encapsulates it. Although some languages support semi-private (also known as protected) object members, that’s a merely variation on the public/private theme. Lately, I’ve been thinkin...
