Sqids (pronounced "squids") is an open-source library that lets you generate YouTube-looking IDs from numbers. These IDs are short, can be generated from a custom alphabet and are guaranteed to be collision-free. Read more .
This is what they look like:
Haskell code is located at https://github.com/sqids/sqids-haskell
To encode & decode:
case sqids (encode [1, 2, 3]) of
Left {} -> print "Something went wrong."
Right id -> print id -- "86Rf07"
case sqids (decode "86Rf07") of
Left {} -> print "Something went wrong."
Right numbers -> print numbers -- [1, 2, 3]Randomize IDs by providing a custom alphabet:
case runSqids defaultSqidsOptions{ alphabet = "FxnXM1kBN6cuhsAvjW3Co7l2RePyY8DwaU04Tzt9fHQrqSVKdpimLGIJOgb5ZE" } (encode [1, 2, 3]) of
Left {} -> print "Something went wrong."
Right id -> print id -- "B4aajs"Enforce a minimum length for IDs:
case runSqids defaultSqidsOptions{ minLength = 10 } (encode [1, 2, 3]) of
Left {} -> print "Something went wrong."
Right id -> print id -- "86Rf07xd4z"Read more at https://github.com/sqids/sqids-haskell
If you're looking for the original Hashids Haskell, you can find it here .
The main use of Sqids is purely visual. If you'd like to use IDs instead of numbers in your webapp, Sqids could be a good choice: