Witchcraft.Comonad.Proto protocol (Witchcraft v1.0.4) View Source
Protocol for the Elixir.Witchcraft.Comonad type class
For this type class's API, please refer to Elixir.Witchcraft.Comonad
Link to this section Summary
Functions
Extract a value out of some context / data structure. This is the opposite
of Witchcraft.Applicative.of/2.
Link to this section Types
Specs
t() :: term()
Link to this section Functions
Specs
extract(Witchcraft.Comonad.t()) :: any()
Extract a value out of some context / data structure. This is the opposite
of Witchcraft.Applicative.of/2.
Examples
iex> extract({1, 2})
2
extract(%Id{id: 42})
#=> 42