When Specifications Are Used?
Understand when and why we use specifications in Elixir.
We'll cover the following...
When we looked at @callback in the Behaviours lesson, we saw that we defined callbacks in terms of their parameter types and return values. For example, we might write the following:
@callback parse(uri_info :: URI.Info.t) :: URI.Info.t
@callback default_port() :: integer
The terms URI.Info.t and integer ...