Headroom.Data.Has

Description

This module provides Has type class, adapted to the needs of this application.

Synopsis

class Has a t where
- getter :: t -> a
- modifier :: (a -> a) -> t -> t
- hasLens :: Lens' t a
- viewL :: MonadReader t m => m a

Documentation

class Has a t where Source #

Implementation of the Has type class pattern.

Minimal complete definition

Methods

modifier :: (a -> a) -> t -> t Source #

Instances

Has CommandInitOptions Env Source #
Instance details Defined in Headroom.Command.Init Methods getter :: Env -> CommandInitOptions Source # modifier :: (CommandInitOptions -> CommandInitOptions) -> Env -> Env Source # hasLens :: Lens' Env CommandInitOptions Source # viewL :: MonadReader Env m => m CommandInitOptions Source #
Has Paths Env Source #
Instance details Defined in Headroom.Command.Init Methods getter :: Env -> Paths Source # modifier :: (Paths -> Paths) -> Env -> Env Source # hasLens :: Lens' Env Paths Source # viewL :: MonadReader Env m => m Paths Source #