The module exported provides the ability to manage a configuration file in the users home directory (or the Windows equivalent). Where the configuration takes the form of key=value, without sections, that for example an '.ini' would have.
The library simplifies serilization/deserialization of the configuration into
a structure similar in behavior to a
Map, as well as an interactive way to
fill in values for simple cases.
Consider the following example, where a user would run the application for the first time, it would ask him for his name; however on a followup run it would just print a greeting with his name.
import System.Config.File main = loadLocal ".apprc" >>= \conf -> do let name = getV conf "name" case name of Just n -> putStrLn $ "hello " ++ n Nothing -> do conf' <- fillInteractively conf [("name", acceptNonBlank)] saveConfiguration conf'