The Perils Of Ownership Based Resource Management (OBRM)

OBRM (AKA RAII: Resource Acquisition Is Initialization) is something you’llinteract with a lot in Rust. Especially if you use the standard library.

Roughly speaking the pattern is as follows: to acquire a resource, you create anobject that manages it. To release the resource, you simply destroy the object,and it cleans up the resource for you. The most common “resource” this patternmanages is simply memory. Box, Rc, and basically everything instd::collections is a convenience to enable correctly managing memory. This isparticularly important in Rust because we have no pervasive GC to rely on formemory management. Which is the point, really: Rust is about control. However weare not limited to just memory. Pretty much every other system resource like athread, file, or socket is exposed through this kind of API.