When used in a struct module, IsType
automatically generates a method to
determine whether an object is of that type.
Instead of writing:
assert Enum.all?(people, fn
%Person{} -> true
_ -> false
end)
IsType
will let you write cleaner code:
defmodule Person do
use IsType
defstruct id: nil, first_name: nil, last_name: nil
end
assert Enum.all?(people, &Person.is_person?/1)
or if you don't like the default name, specify your own with an atom.
defmodule Person do
use IsType, function_name: :is_employee
defstruct id: nil, first_name: nil, last_name: nil
end
assert Enum.all?(people, &Person.is_employee/1)
IsType
can be installed by adding is_type
to your list of dependencies in
mix.exs
:
def deps do
[
{:is_type, "~> 0.1.0"}
]
end
Documentation can be found at https://hexdocs.pm/is_type.