A better Module interaction pattern?

[al2o3cr]

@CharlesO

Is there a benefit for example to have a @behaviour in Handler which defines :parse and other functions

The major benefit is compile-time checking:

• if CustomerA says @behaviour Handler but doesn’t supply callbacks with the correct arities, the compiler will complain
• (sometimes) Dialyzer will be able to prove that a function’s implementation fails to match the behaviour’s spec

As a side bonus, libraries like mox can use that same behaviour for their definitions.