Std.App.App
type
AppThis declaration introduces a public type.
What it does
The program: what it is called, what it was told, what it serves, what has
to be running before it serves it, and what is wrapped around every handler.
The steps are part of the application rather than left to each program,
because the protections they carry are the ones a service should have
before anybody has thought about them. A program that needs them different
says so, and that is a line in its source rather than the absence of one.
Read the signature
- This declaration has no value signature because it introduces a type or trait.
