croma v0.4.7 Croma.SubtypeOfString

Helper module to define string-based types. The following members are generated by use Croma.SubtypeOfString:

  • @type t
  • @spec validate(term) :: Croma.Result.t(t)

Options:

  • :pattern - A regex pattern to check whether a string is classified into this type or not.
  • :default - Default value for this type. Passing this option generates default/0.

Examples

defmodule MyString do
  use Croma.SubtypeOfString, pattern: ~r/^foo|bar$/, default: "foo"
end