Friday, June 5, 2015

May 2015 1HaskellADay problems and solutions

May 2015
  • May 29th, 2015: The President of the United States wants YOU to solve today's #haskell problem Super-secret decoder ring sez:
  • May 28th, 2015: So, you got the for-loop down. Good. Now: how about the 'no'-loop. HUH? Ceci n'est pas un for-loop
  • May 27th, 2015: For today's #haskell problem we look at Haskell by Example and bow before the mighty for-loop! The for-loop solution. I count even. *groans
  • May 26th, 2015: TMI! So how to distinguish the stand-outs from the noise? Standard deviations FTW! for today's #haskell problem. First rule: don't lose!
  • May 25th, 2015: We look at monad transformers to help in logging for today's #haskell problem. Ooh! What does the log say? (that foxy log!) Ooh! Ouch! Bad investment strategy! Onto the next strategy!
  • May 22nd, 2015: Tomorrow's another day for today's #haskell problem #trading Huh! we get very similar returns as from previously essayed. Well, now we are confident of a more accurate model.
  • May 21st, 2015: For today's #haskell problem we talk of categories (not 'The'), so we need a cat-pic: LOL
    Is 'parfait' a Category? … If so, I would eat categories every day! 

  • May 20th, 2015: Let's view a graph as, well, a #neo4j-graph for today's #haskell problem Ooh! Pretty Graph(ic)s! 
  • May 19th, 2015: "Lemme put that on my calendar," sez the trader for today's #haskell problem So ... next Monday, is that a #trading day? #inquiringmindswanttoknow
  • May 18th, 2015: So, what, precisely, does a bajillion clams look like? We find out by doing today's #haskell problem #trading #clams Were those cherry clams? No: apple
  • May 15th, 2015: We learn that π is a Π-type in today's #haskell problem of co-constants (#typehumour) 'I' like how Id is the I-combinator
  • May 14th, 2015: Today's #haskell problem brings out the statistician in you that you didn't know you had. Hello, Standard Deviations! Wow, rational roots? Sure, why not? And: 'σ'? ... so cute!
  • May 13th, 2015: Today's #haskell problem teaches us that variables ... AREN'T! Well, if variables aren't, then they certainly do. Except in Haskell – A solution to this problem is posted at
  • May 12th, 2015: For Today's #haskell problem we look at values and their types, but NOT types and their values, please! *glares* taf, tof, tiff, tough solution today
  • May 11th, 2015: Hello, world! Haskell-style! -- A solution to this 'Hello, world!'-problem is posted at
  • Octo de Mayo, 2015: Strings not enumerable in Haskell? Balderdash! Today's #haskell problem Today we produce not only one, but two solutions to the enumerable-strings problem #haskell 
  • Septo de Mayo, 2015: When all your Haskell documentation is gone, whom do you call? The web crawler, SpiderGwen! to the rescue! 
    We CURL the HTML-parsing solution at
  • Sexo de Mayonnaise, 2015: @BenVitale Offers us a multi-basal ('basel'? 'basil'?) palindromic number-puzzle for today's #haskell problem
  • Cinco de Mayo, 2015: May the #maths be with you. Always. Today's #haskell problem, we learn that 5 is the 6th number. Happy Cinco de Mayo! Pattern-matching, by any other name, would still smell as sweet #lolsweet A solution to today's #haskell problem.
  • May 4th, 2015: "There is no trie, my young apprentice!" Today's #haskell problem proves Master Yoda wrong. FINALLY! So ... I 'trie'd ... *GROAN!* A solution to today's 'trie'ing #haskell problem 
  • May 1st, 2015: (Coming up to) Today's #haskell problem is 'slightly' more challenging than yesterday's problem (forall, anyone?) Existential Quantification, For(all) The Win!

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