Std.App.Config.require
fn
require: &Std.App.Config.Config -> Str -> Result[Str, Std.App.Config.ConfigError]This is a callable function.
What it does
A setting that must be there, for one the program cannot invent.
A database password has no sensible default, and a program that started
with an invented one would fail later and further away.
Read the signature
- The text after the name is the type checked by Pudu.
- Read arrows from left to right: inputs come first, and the final type is returned.
- & borrows a value for this call instead of moving or copying it.
- Names inside [ ] are type arguments, such as the item type held by a collection.
- Result makes success and recoverable failure part of the function's type.