Sound.MIDI.Message.Class.Check

Documentation

class C event where

All methods have default implementations that return Nothing. This helps implementing event data types that support only a subset of types of events.

Maybe a better approach is to provide type classes for every type of event and make C a subclass of all of them.

Methods

note :: Channel -> event -> Maybe (Velocity, Pitch, Bool)

program :: Channel -> event -> Maybe Program

anyController :: Channel -> event -> Maybe (Controller, Int)

pitchBend :: Channel -> event -> Maybe Int

channelPressure :: Channel -> event -> Maybe Int

mode :: Channel -> event -> Maybe T

Instances

C T

C T

controller :: C event => Channel -> Controller -> event -> Maybe Int

liftMidi :: (Channel -> T -> Maybe a) -> Channel -> T -> Maybe a