How to create types that are not Elixir types

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1

How could I create a new type specifically customised, however it is made up of for example further custom types like

type = ?pattern
pattern = :empty | atom | pattern  '*'
2

You can do that with typespecs: https://hexdocs.pm/elixir/typespecs.html#content

For example:

@type ok :: :ok
@type error :: {:error, term} | :error
@type result :: ok | error
3

Page not found error seems to be displayed.

4

Sorry, I updated the link

5

Thanks a lot and no problem.

6

Note that typespecs are only used by Dialyzer/Dialyxir, i.e. static analysis tools. Type information is not used at runtime.

3 Likes
7

Yep. I somehow assumed that the question was about typespecs.

If you need polymorphism you can use protocols.

8

Thanks again.