Skulk.ToString

Collection of functions for dealing with typesafe wrappers around strings (i.e. "newtype Name = Name String" etc) and string-like structures alike.

Documentation

class ToString w where

Typeclass for a string-like structures that may expose the contained value.

Typical usage is something along the lines of

newtype LastName = LastName String deriving (IsString, ToString)

Minimal complete definition

toString

Methods

toString :: w -> String

Exposes string content.

Instances

ToString String

Methods

toString :: String -> String

ToString a => ToString (Maybe a)

Methods

toString :: Maybe a -> String

(ToString a, ToString b) => ToString (Either a b)

Methods

toString :: Either a b -> String

liftT :: (ToString a, IsString a) => (String -> String) -> a -> a

Promotes a function.

shapeshift :: (ToString a, IsString b) => a -> b

Converts from one string-like structure to another one.

emptyToNothing :: ToString a => a -> Maybe a

Converts empty string to Nothing.

nothingToEmpty :: IsString a => Maybe a -> a

Converts Nothing to empty string.