Database.Bolt.Lens

Documentation

exact :: RecordValue a => Fold Value a

This Fold extracts value of required type from Value. If Value contains wrong type, exact is an empty Fold.

field :: RecordValue a => Text -> Fold Record a

Extract field by given key from Record. If there is no such key or the type is wrong, this is an empty Fold.

prop :: RecordValue a => Text -> Fold Node a

Extract any property from Node. If there is no such property or the type is wrong, this is an emtpy Fold.