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1. kat (boneidol)'s status on Tuesday, 16-Apr-2019 10:00:03 EDT kat

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   I've just done (part of) Advent of Code 2018 q9 in #Haskell.  My first attempt, I thought was elegant and readable, but consumed all RAM in the universe.  My second attempt, was more nuanced, throwing away all the things the solution did not rea…
   1. kat (boneidol)'s status on Tuesday, 16-Apr-2019 10:08:32 EDT kat

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      This is a nice explanation of the State Monad https://wiki.haskell.org/State_Monad #Haskell I've basically cut and paste the example more than once before to solve problems.
   2. kat (boneidol)'s status on Wednesday, 17-Apr-2019 16:15:12 EDT kat

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      Ok, I made some changes, and it does the first part in a 0.1s now, and the second part in 7s.  However the code looks very much like an imperative language now.  There is a loop over a list inside which we do things, and use the State Monad to c…
      1. kat (boneidol)'s status on Wednesday, 17-Apr-2019 16:42:03 EDT kat

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         I suppose I should be pleased.   A execution time from 11min -> 0.1 sec 
         
         This functional programming malarky seems a bit dangerous.  Making everything stateless and recursive seems nice, but picking the correct data structures and choices makes a huge difference.