diff options
Diffstat (limited to 'Midi.hs')
-rw-r--r-- | Midi.hs | 5 |
1 files changed, 5 insertions, 0 deletions
@@ -59,6 +59,11 @@ instance ToRow CompleteRecording where | |||
59 | where | 59 | where |
60 | (CompleteRecording (TimeSpec s ns) (TimeSpec s' ns') (TimeSpec s'' ns'') (TimeSpec s''' ns''') midi) = reco | 60 | (CompleteRecording (TimeSpec s ns) (TimeSpec s' ns') (TimeSpec s'' ns'') (TimeSpec s''' ns''') midi) = reco |
61 | 61 | ||
62 | instance Monoid CompleteRecording where | ||
63 | mempty = CompleteRecording 0 0 0 0 [] | ||
64 | (CompleteRecording s _e f _l evts) `mappend` (CompleteRecording _s' e' _f' l' evts') = | ||
65 | CompleteRecording s e' f l' (evts' ++ evts) | ||
66 | |||
62 | maybesnd :: forall t t1. (t, Maybe t1) -> Maybe (t, t1) | 67 | maybesnd :: forall t t1. (t, Maybe t1) -> Maybe (t, t1) |
63 | maybesnd (_, Nothing) = Nothing | 68 | maybesnd (_, Nothing) = Nothing |
64 | maybesnd (x, Just y) = Just (x, y) | 69 | maybesnd (x, Just y) = Just (x, y) |