System.Console.Options

Documentation

class Setting s where

An instance s of Setting has as values partial sets of option assignments, as given by the user in a configuration file or command line options. Options s is the associated type of complete configurations, as the program peruses.

Associated Types

type Options s

Methods

set :: s -> Options s -> Options s

apply :: forall s. Setting s => [s] -> Options s -> Options s

create :: String -> String -> String -> [(String, Type)] -> Q [Dec]

create is a template haskell computation. Given names for the "options" type, the "settings" type and the "set" function, and a list of settings (pairs of their names and types), it creates those datatypes and function, and an instance of the Settings class.

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