Description

Scoped is a mixin class that creates a thread-local stack for each of its subclasses. Instances of the subclass can be pushed and popped on this stack, and the instance at the top of the stack is always available as a property of the class. Scoped classes are typically used to make parameters implicitly available within a (dynamic) scope, without having to pass them around as function arguments. Scoped helps you do this in a safe and convenient way, and provides very informative error messages when you do something wrong.