music-pitch-literal-1.9.0: Overloaded pitch literals.

Copyright	(c) Hans Hoglund 2012
License	BSD-style
Maintainer	hans@hanshoglund.se
Stability	experimental
Portability	non-portable (TF,GNTD)
Safe Haskell	None
Language	Haskell2010

Music.Pitch.Alterable

Contents

Alterable class

Description

Synopsis

Alterable class

class Alterable a where Source

Class of things that can be altered.

accidental (sharpen a) = sharpen (accidental a)
accidental (flatten a) = flatten (accidental a)
sharpen . flatten      = id

Methods

sharpen :: a -> a Source

Increase the given pitch by one.

flatten :: a -> a Source

Decrease the given pitch by one.

Instances

Alterable Double
Alterable Integer
Alterable a => Alterable [a]
Integral a => Alterable (Ratio a)
Alterable a => Alterable (b -> a)
Alterable a => Alterable (b, a)

alter :: Alterable a => Int -> a -> a Source