diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/GTFS.hs | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/lib/GTFS.hs b/lib/GTFS.hs index 4f3a311..bec519f 100644 --- a/lib/GTFS.hs +++ b/lib/GTFS.hs @@ -405,10 +405,10 @@ instance CSV.FromNamedRecord ShapePoint where intAsBool :: CSV.NamedRecord -> BS.ByteString -> CSV.Parser (Maybe Bool) intAsBool r field = do - int <- r .: field - pure $ case int :: Int of - 1 -> Just True - 0 -> Just False + int <- r .:? field + pure $ case int :: Maybe Int of + Just 1 -> Just True + Just 0 -> Just False _ -> Nothing intAsBool' :: CSV.NamedRecord -> BS.ByteString -> CSV.Parser Bool |