happstack-data-0.2.1: Happstack data manipulation librariesSource codeContentsIndex
Happstack.Data.Migrate
Synopsis
class Migrate a b where
migrate :: a -> b
Documentation
class Migrate a b whereSource
Migrate instances are needed to allow upgrades of MACID state. It should be declared as instance Migrate Old New where migrate = transition_function
Methods
migrate :: a -> bSource
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