{"last_commit_sha":"f0664c917c406d025a6d03f1b4ccc94d413dbe40","persisted":true,"title":"extensions experiment","content":"# Hackage Experiment Isaac ran an experiment on all the packages uploaded to [ http://hackage.haskell.org](http://hackage.haskell.org). This table summarizes the various packages' use of extensions. TODO [ Upload more packages](http://hackage.haskell.org/trac/hackage/wiki/CabalPackages) and re-run this experiment.

Extension	times used
CPP?	7
[ExistentialQuantification](existential-quantification)	1
[ForeignFunctionInterface](foreign-function-interface)	2
[FunctionalDependencies](functional-dependencies)	1
[MultiParamTypeClasses](multi-param-type-classes)	1
[OverlappingInstances](overlapping-instances)	8
TemplateHaskell?	1
[TypeSynonymInstances](type-synonym-instances)	1

errors in 4 packages: - haspr-0.3.0 - hasp-0.3.0 - hsp-0.2 - haskelldb-0.9 ","front_matter":{},"format":"markdown","uploads_path":"https://gitlab.haskell.org/api/v4/projects/451/wikis/attachments","slug":"extensions-experiment","path":"/haskell/prime/-/wikis/extensions-experiment","wiki_path":"/haskell/prime/-/wikis/home","help_path":"/help/user/project/wiki/index.md","markdown_help_path":"/help/user/markdown.md","markdown_preview_path":"/haskell/prime/-/wikis/extensions-experiment/preview_markdown","create_path":"/haskell/prime/-/wikis"}