module Dry
module Dry::Types
module Dry::Types::Builder
module Dry::Types::BuilderMethods
module Dry::Types::Coercions
module Dry::Types::Coercions::Form
module Dry::Types::Coercions::JSON
module Dry::Types::Decorator
module Dry::Types::Hash::MaybeTypes
module Dry::Types::Options
module Dry::Types::Type
class Dry::Types::Array
class Dry::Types::Array::Member
class Dry::Types::Compiler
class Dry::Types::Constrained
class Dry::Types::Constrained::Coercible
class Dry::Types::ConstraintError
class Dry::Types::Constructor
class Dry::Types::Container
class Dry::Types::Default
class Dry::Types::Default::Callable
class Dry::Types::Definition
class Dry::Types::Enum
class Dry::Types::FnContainer
class Dry::Types::Hash
class Dry::Types::Hash::Permissive
class Dry::Types::Hash::Schema
class Dry::Types::Hash::Strict
class Dry::Types::Hash::StrictWithDefaults
class Dry::Types::Hash::Symbolized
class Dry::Types::Hash::Weak
class Dry::Types::Maybe
class Dry::Types::MissingKeyError
class Dry::Types::Result
class Dry::Types::Result::Failure
class Dry::Types::Result::Success
class Dry::Types::Safe
class Dry::Types::SchemaError
class Dry::Types::Sum
class Dry::Types::Sum::Constrained
class Dry::Types::UnknownKeysError
dry-types
0.12.0
# optional?
(Boolean)
def optional? left == Types['strict.nil'] end