Servant.Common.Text

Documentation

class FromText a where

For getting values from url captures and query string parameters Instances should obey: > fromText (toText a) == Just a

Methods

fromText :: Text -> Maybe a

Instances

FromText Bool

>>> fromText ("true"::Text) :: Maybe Bool
Just True
>>> fromText ("false"::Text) :: Maybe Bool
Just False
>>> fromText ("anything else"::Text) :: Maybe Bool
Nothing

FromText Double

FromText Float

FromText Int

FromText Int8

FromText Int16

FromText Int32

FromText Int64

FromText Integer

FromText Word

FromText Word8

FromText Word16

FromText Word32

FromText Word64

FromText String

FromText Text

class ToText a where

For putting values in paths and query string parameters Instances should obey: > fromText (toText a) == Just a

Methods

toText :: a -> Text

Instances

ToText Bool

>>> toText True
"true"
>>> toText False
"false"

ToText Double

ToText Float

ToText Int

ToText Int8

ToText Int16

ToText Int32

ToText Int64

ToText Integer

ToText Word

ToText Word8

ToText Word16

ToText Word32

ToText Word64

ToText String

ToText Text