Copyright	(c) 2019-2020 Vaclav Svejcar
License	BSD-3-Clause
Maintainer	vaclav.svejcar@gmail.com
Stability	experimental
Portability	POSIX
Safe Haskell	None
Language	Haskell2010

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

getter, modifier | hasLens

Methods

getter :: t -> a Source #

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

hasLens :: Lens' t a Source #

viewL :: MonadReader t m => m a Source #

Instances

Instances details

Has CurrentYear ConfiguredEnv Source #
Instance details Defined in Headroom.HeaderFn Methods getter :: ConfiguredEnv -> CurrentYear Source # modifier :: (CurrentYear -> CurrentYear) -> ConfiguredEnv -> ConfiguredEnv Source # hasLens :: Lens' ConfiguredEnv CurrentYear Source # viewL :: MonadReader ConfiguredEnv m => m CurrentYear Source #
Has UpdateCopyrightMode ConfiguredEnv Source #
Instance details Defined in Headroom.HeaderFn Methods getter :: ConfiguredEnv -> UpdateCopyrightMode Source # modifier :: (UpdateCopyrightMode -> UpdateCopyrightMode) -> ConfiguredEnv -> ConfiguredEnv Source # hasLens :: Lens' ConfiguredEnv UpdateCopyrightMode Source # viewL :: MonadReader ConfiguredEnv m => m UpdateCopyrightMode Source #
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 #
Has (FileSystem (RIO Env)) Env Source #
Instance details Defined in Headroom.Command.Init Methods getter :: Env -> FileSystem (RIO Env) Source # modifier :: (FileSystem (RIO Env) -> FileSystem (RIO Env)) -> Env -> Env Source # hasLens :: Lens' Env (FileSystem (RIO Env)) Source # viewL :: MonadReader Env m => m (FileSystem (RIO Env)) Source #