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Re:Haskell GHC 9.0.1-alpha by dpratt71 on Wednesday September 30, 2020 @07:44PM (#24645492)
It's an abstraction to facilitate writing do blocks. Mostly tongue in cheek.
Re:Haskell GHC 9.0.1-alpha by tome on Thursday October 01, 2020 @03:28AM (#24648330)
I find this a surprisingly simple and convenient explanation!