lens-simple-0.1.0.2: lens-simple.cabal
name: lens-simple
version: 0.1.0.2
synopsis: simplified import of elementary lens-family combinators
description: This module, <http://hackage.haskell.org/package/lens-simple/docs/Lens-Simple.html @Lens.Simple@> , just re-exports the main modules from Russell O\'Connor's
<http://hackage.haskell.org/package/lens-family lens-family>
package, the original <http://r6.ca/blog/20120623T104901Z.html van Laarhoven lens> library.
@Lens.Simple@ also re-exports @makeLenses@ and
other TH incantations from Dan Burton's associated
<http://hackage.haskell.org/package/lens-family-th lens-family-th>.
.
The idea is just to make a sort of minimal-dependency @lens-family@ equivalent of @import Control.Lens@, namely @import Lens.Simple@
/-/- it's even one character shorter!
.
As an illustration, note that the
<https://github.com/michaelt/lens-family-simple/blob/master/examples/Pong.hs pong example>
from the @lens@ library requires only this abbreviating change of imports.
If you care to make that program more complicated, you might at some point need
the unfathomably more sophisticated material in @Control.Lens@.
Because @lens-family@ accords as
far as possible, with @Control.Lens@, within its more limited sphere,
a change of imports will often be all that is necessary to begin using them.
.
It is rarely necessary to exceed the materials exported here when using
the lenses and quasi-lenses exported by e.g.
<http://hackage.haskell.org/package/pipes-bytestring pipes-bytestring>
or <http://hackage.haskell.org/package/pipes-group pipes-group>. It is for such
use-cases that this module is principally intended.
.
Note that many of the other lenses and combinators are a bit more
specialized than their @Control.Lens@ equivalents:
for example, _1 and _2 are here
familiarly specialized to act just on real Haskell
pairs. With the loss of abstraction we also of course
lose the concomitant opaque error messages
about @Field1 s t a b@ etc.
homepage: https://github.com/michaelt/lens-simple
license: BSD3
license-file: LICENSE
author: michaelt
maintainer: what_is_it_to_do_anything@yahoo.com
copyright: Copyright (C) 2012,2013,2014 Russell O'Connor, 2014 michaelt
category: Lenses
build-type: Simple
extra-source-files: README.md
cabal-version: >=1.10
source-repository head
type: git
location: https://github.com/michaelt/lens-simple
library
exposed-modules: Lens.Simple
build-depends: base >= 4 && < 5
, lens-family == 1.2.*
, lens-family-core == 1.2.*
, lens-family-th == 0.4.*
default-language: Haskell2010