Data.Sext.Class

Use this only if you need to make some type Sextable.

Documentation

class Sextable a where

Class of types which can be assigned a type-level length.

Associated Types

data Sext i a

Data family which wraps values of the underlying type giving them a type-level length. Sext 6 t means a value of type t of length 6.

type Elem a

Basic element type. For Sextable [a], this is a.

Methods

unsafeCreate :: a -> Sext i a

Simply wrap a value in a Sext as is, assuming any length.

For example, an expression like

unsafeCreate "somestring" :: Sext 50 String

will typecheck, although the stored length information will not match actual string size. This may result in wrong behaviour of all functions defined for Sext.

Use it only when you know what you're doing.

When implementing new Sextable instances, code this to simply apply the constructor of Sext.

unwrap :: Sext i a -> a

Forget type-level length, obtaining the underlying value.

length :: a -> Int

append :: a -> a -> a

replicate :: Int -> Elem a -> a

map :: (Elem a -> Elem a) -> a -> a

take :: Int -> a -> a

drop :: Int -> a -> a

Instances

Sextable ByteString

Sextable Text

Sextable [a]