Copyright	(C) 2012-16 Edward Kmett
License	BSD-style (see the file LICENSE)
Maintainer	Edward Kmett <ekmett@gmail.com>
Stability	experimental
Portability	non-portable
Safe Haskell	None
Language	Haskell98

Data.Text.Lens

Description

Synopsis

Documentation

class IsText t where Source

Traversals for strict or lazy Text

Minimal complete definition

Methods

This isomorphism can be used to pack (or unpack) strict or lazy Text.

pack x ≡ x ^. packed
unpack x ≡ x ^. from packed
packed ≡ from unpacked

Convert between strict or lazy Text and a Builder.

fromText x ≡ x ^. builder

Traverse the individual characters in strict or lazy Text.

text = unpacked . traversed

Instances

IsText String Source
Methods packed :: Iso' String String Source builder :: Iso' String Builder Source text :: IndexedTraversal' Int String Char Source
IsText Text Source
Methods packed :: Iso' String Text Source builder :: Iso' Text Builder Source text :: IndexedTraversal' Int Text Char Source
IsText Text Source
Methods packed :: Iso' String Text Source builder :: Iso' Text Builder Source text :: IndexedTraversal' Int Text Char Source

This isomorphism can be used to unpack (or pack) both strict or lazy Text.

unpack x ≡ x ^. unpacked
pack x ≡ x ^. from unpacked

This Iso is provided for notational convenience rather than out of great need, since

unpacked ≡ from packed

This is an alias for unpacked that makes it clearer how to use it with ('#').

_Text = from packed

>>> _Text # "hello" :: Strict.Text
"hello"

pattern Text :: () => IsText s => String -> s Source