https://github.com/bapjiws/circular-haskell-enum

Haskell Enum that wraps around (i.e., does now stop as its maxBound and minBound)
https://github.com/bapjiws/circular-haskell-enum

Last synced: 3 months ago
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Haskell Enum that wraps around (i.e., does now stop as its maxBound and minBound)

• Host: GitHub
• URL: https://github.com/bapjiws/circular-haskell-enum
• Owner: bapjiws
• Created: 2015-10-12T09:40:25.000Z (over 9 years ago)
• Default Branch: master
• Last Pushed: 2015-10-12T09:51:42.000Z (over 9 years ago)
• Last Synced: 2025-01-28T16:44:23.800Z (4 months ago)
• Language: Haskell
• Size: 281 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
This is a realization of Haskell Enum that wraps around (i.e., does now stop as its maxBound and minBound). 

For example, given that False is minBound for Bool and True is maxBound for Bool, here's what we can do:



GHCi> instance SafeEnum Bool

GHCi> spred False

True

GHCi> ssucc True

False



Similarly, given that '\NUL' is minBound for Char and '\1114111' is maxBound for Char, we can do the following:



GHCi> instance SafeEnum Char

GHCi> spred '\NUL'

'\1114111'

GHCi> ssucc '\1114111'

'\NUL'