Documentation for config.

servant/src/Servant/API/WithNamedConfig.hs

@@ -5,4 +5,21 @@ module Servant.API.WithNamedConfig where
 
 import GHC.TypeLits
 
+-- | 'WithNamedConfig' names a specific tagged configuration to use for the
+-- combinators in the API. For example:
+--
+-- > type UseNamedConfigAPI1 = WithNamedConfig "myConfig" '[String] (
+-- >     ReqBody '[JSON] Int :> Get '[JSON] Int)
+--
+-- Both the 'ReqBody' and 'Get' combinators will use the 'NamedConfig' with
+-- type tag "myConfig" as their configuration. In constrast, in (notice
+-- parentesizing):
+--
+-- > type UseNamedConfigAPI2 = WithNamedConfig "myConfig" '[String] (
+-- >     ReqBody '[JSON] Int) :> Get '[JSON] Int
+--
+-- Only the 'ReqBody' combinator will use this configuration, and 'Get' will
+-- maintain the default configuration.
+--
+-- For more information, see the tutorial.
 data WithNamedConfig (name :: Symbol) (subConfig :: [*]) subApi