Cabal revisions of data-default-extra-0.0.1
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revision 1
-name: data-default-extra-version: 0.0.1-synopsis: A class for types with a default value.-description:- An alternative to- <https://hackage.haskell.org/package/data-default data-default> package, that- provides a lot of additional instances for @Default@ type class.- .- @Default@ type class provides a default value (@def@) of a type. In case when- a particluar type has an instance for @Monoid@, then the default value should- be @mempty@, otherwise it can cause a great deal of confusion.- .- One must understand, that @Default@ type class, has no axioms associated with- it. Its purpose is to minimize:- .- * Number of imports.- .- * Number of introduced definitions that are part of an API.- .- * Complexity of building more complicated \"default values\" out of- simpler \"default values\".- .- * Cognitive overhead. (Reduction of cognitive overhead is partially a- consequence of reducing above issues.)- .- As one may notice, most of the listed problems, that @Default@ type class- tries to solve, to various degrees of success, are for human benefit, and not- theoretically founded. Because of this, please always try hard to define- sensible instances of @Default@. Most importantly, document what @def@ means- for particular type, and always check that @def@ is sensible, by testing it- on a real world sample of human beings, one is not a big enough sample.- .- That said, using @Default@ may not always be a good idea. If it breaks- people's mental model, or theoretical models with real axioms, then just- don't use it.--homepage: https://github.com/trskop/data-default-extra-bug-reports: https://github.com/trskop/data-default-extra/issues-license: BSD3-license-file: LICENSE-author: Peter Trško-maintainer: peter.trsko@gmail.com-copyright: (c) 2016, Peter Trško-category: Data-build-type: Simple-cabal-version: >=1.10--extra-source-files: ChangeLog.md, README.md--flag with-bytestring- description:- Provide instances for (lazy and strict) ByteString, ByteString Builder and- for ShortByteString.-- default: True- manual: False--flag with-case-insensitive- description:- Provide instance for CI (Case Insensitive) type wrapper.-- default: True- manual: False--flag with-containers- description:- Provide instances for Set, Map, IntMap, IntSet, Seq, and Tree.-- default: True- manual: False--flag with-dlist- description: Provide instance for DList type.- default: False- manual: False--flag with-text- description:- Provide instance for (strict and lazy) Text and Text Builder.-- default: True- manual: False--flag with-old-locale- description: Provide instance for TimeLocale type.- -- Old locale is part of GHC distribution, doesn't make sense to have it- -- turned off.- default: True- manual: False--flag with-unordered-containers- description: Provide instances for HashMap and HashSet.- default: True- manual: False--flag with-vector- description:- Provide instances for various (boxed and unboxed) Vector types.-- default: True- manual: False--library- hs-source-dirs: src- exposed-modules:- Data.Default- , Data.Default.Generic- -- other-modules:-- default-language: Haskell2010- other-extensions:- CPP- , FlexibleContexts- , NoImplicitPrelude- , TypeOperators-- build-depends:- base <6- , data-default-class ==0.0.*- , data-default-instances-base ==0.0.*- , data-default-instances-new-base ==0.0.*-- if impl(ghc <7.6)- -- GHC.Generics moved from ghc-prim to base with GHC 7.6 release.- build-depends: ghc-prim-- if flag(with-bytestring)- build-depends: data-default-instances-bytestring ==0.0.*- cpp-options: -DWITH_bytestring-- if flag(with-case-insensitive)- build-depends: data-default-instances-case-insensitive ==0.0.*- cpp-options: -DWITH_case_insensitive-- if flag(with-containers)- build-depends: data-default-instances-containers ==0.0.*- cpp-options: -DWITH_containers-- if flag(with-dlist)- build-depends: data-default-instances-dlist ==0.0.*- cpp-options: -DWITH_dlist-- if flag(with-text)- build-depends: data-default-instances-text ==0.0.*- cpp-options: -DWITH_text-- if flag(with-old-locale)- build-depends: data-default-instances-old-locale ==0.0.*- cpp-options: -DWITH_old_locale-- if flag(with-unordered-containers)- build-depends: data-default-instances-unordered-containers ==0.0.*- cpp-options: -DWITH_unordered_containers-- if flag(with-vector)- build-depends: data-default-instances-vector ==0.0.*- cpp-options: -DWITH_vector-- ghc-options: -Wall -fwarn-tabs--source-repository head- type: git- location: git://github.com/trskop/data-default-extra.git--source-repository this- type: git- location: git://github.com/trskop/data-default-extra.git- tag: v0.0.1+name: data-default-extra +version: 0.0.1 +x-revision: 1 +synopsis: A class for types with a default value. +description: + An alternative to + <https://hackage.haskell.org/package/data-default data-default> package, that + provides a lot of additional instances for @Default@ type class. + . + @Default@ type class provides a default value (@def@) of a type. In case when + a particluar type has an instance for @Monoid@, then the default value should + be @mempty@, otherwise it can cause a great deal of confusion. + . + One must understand, that @Default@ type class, has no axioms associated with + it. Its purpose is to minimize: + . + * Number of imports. + . + * Number of introduced definitions that are part of an API. + . + * Complexity of building more complicated \"default values\" out of + simpler \"default values\". + . + * Cognitive overhead. (Reduction of cognitive overhead is partially a + consequence of reducing above issues.) + . + As one may notice, most of the listed problems, that @Default@ type class + tries to solve, to various degrees of success, are for human benefit, and not + theoretically founded. Because of this, please always try hard to define + sensible instances of @Default@. Most importantly, document what @def@ means + for particular type, and always check that @def@ is sensible, by testing it + on a real world sample of human beings, one is not a big enough sample. + . + That said, using @Default@ may not always be a good idea. If it breaks + people's mental model, or theoretical models with real axioms, then just + don't use it. + +homepage: https://github.com/trskop/data-default-extra +bug-reports: https://github.com/trskop/data-default-extra/issues +license: BSD3 +license-file: LICENSE +author: Peter Trško +maintainer: peter.trsko@gmail.com +copyright: (c) 2016, Peter Trško +category: Data +build-type: Simple +cabal-version: >=1.10 + +extra-source-files: ChangeLog.md, README.md + +flag with-bytestring + description: + Provide instances for (lazy and strict) ByteString, ByteString Builder and + for ShortByteString. + + default: True + manual: False + +flag with-case-insensitive + description: + Provide instance for CI (Case Insensitive) type wrapper. + + default: True + manual: False + +flag with-containers + description: + Provide instances for Set, Map, IntMap, IntSet, Seq, and Tree. + + default: True + manual: False + +flag with-dlist + description: Provide instance for DList type. + default: False + manual: False + +flag with-text + description: + Provide instance for (strict and lazy) Text and Text Builder. + + default: True + manual: False + +flag with-old-locale + description: Provide instance for TimeLocale type. + -- Old locale is part of GHC distribution, doesn't make sense to have it + -- turned off. + default: True + manual: False + +flag with-unordered-containers + description: Provide instances for HashMap and HashSet. + default: True + manual: False + +flag with-vector + description: + Provide instances for various (boxed and unboxed) Vector types. + + default: True + manual: False + +library + hs-source-dirs: src + exposed-modules: + Data.Default + , Data.Default.Generic + -- other-modules: + + default-language: Haskell2010 + other-extensions: + CPP + , FlexibleContexts + , NoImplicitPrelude + , TypeOperators + + build-depends: + base <6 + , data-default-class ==0.0.* || ==0.1.* + , data-default-instances-base ==0.0.* || ==0.1.* + , data-default-instances-new-base ==0.0.* + + if impl(ghc <7.6) + -- GHC.Generics moved from ghc-prim to base with GHC 7.6 release. + build-depends: ghc-prim + + if flag(with-bytestring) + build-depends: data-default-instances-bytestring ==0.0.* + cpp-options: -DWITH_bytestring + + if flag(with-case-insensitive) + build-depends: data-default-instances-case-insensitive ==0.0.* + cpp-options: -DWITH_case_insensitive + + if flag(with-containers) + build-depends: data-default-instances-containers ==0.0.* + cpp-options: -DWITH_containers + + if flag(with-dlist) + build-depends: data-default-instances-dlist ==0.0.* + cpp-options: -DWITH_dlist + + if flag(with-text) + build-depends: data-default-instances-text ==0.0.* + cpp-options: -DWITH_text + + if flag(with-old-locale) + build-depends: data-default-instances-old-locale ==0.0.* + cpp-options: -DWITH_old_locale + + if flag(with-unordered-containers) + build-depends: data-default-instances-unordered-containers ==0.0.* + cpp-options: -DWITH_unordered_containers + + if flag(with-vector) + build-depends: data-default-instances-vector ==0.0.* + cpp-options: -DWITH_vector + + ghc-options: -Wall -fwarn-tabs + +source-repository head + type: git + location: git://github.com/trskop/data-default-extra.git + +source-repository this + type: git + location: git://github.com/trskop/data-default-extra.git + tag: v0.0.1