April 2018 1HaskellADay Problems and Solutions

• April 25th, 2018: For Wednesday's #haskell problem we prove, definitively, @fermatslibrary n^5 is n ... for very small n. For Wednesday's #haskell solution we learn that number theory is so cool! 
  
• April 24th, 2018: For Tuesday's #haskell problem we look for a fix-point of simplifying HTML. Good thing it's not NP-hard! ... no ... wait. Tuesday's #haskell solution is the fix-point for HTML. Just like the fix-point for factorial. Structurally, maybe, but otherwise, kinda not. 
• April 23rd, 2018: What happens when things go wrong? We start to look at debugging for Monday's #haskell problem. For Monday's #haskell solution: the error is not here; the error is in another castle. 
  
• April 20th, 2018: Friday's #haskell problem is to decode HTML entities from titles of articles. Friday's #haskell solution: deHTMLification: get 
• April 18th, 2018: Hey! Let's store the raw JSON as a fall-back should our ETL process fail for Wednesday's #haskell problem. Wednesday's #Haskell solution: storing raw JSON in a SQL data store BECAUSE WE CAN! 
  
• April 17th, 2018: For Tuesday's #haskell problem we upload articles from a different publisher of a compressed JSON archive with a different format. We find adding a differently-structured set of articles to IxArt store is simple for Tuesday's #haskell solution. 
• April 16th, 2018: For Monday's #haskell problem, we take articles-as-json from various sources and put them into a common SQL data store. For Monday's #haskell solution we upload articles from different publications to a common SQL data store, both compressed and uncompressed archives. 
  
• April 13th, 2018: Friday's #haskell problem is to grab packets of articles from a REST endpoint for later processing. Friday's #haskell solution: Those are some rather large packets downloaded from the REST endpoint! 
• April 12th, 2018: Thursday's #haskell problem: auditing and logs. Thursday's #haskell solution is to wrap packet extraction and insertion in an ETL process. 
  
• April 11th, 2018: Wednesday's #haskell problem: when we download packets of articles, let's record that event. Wednesday's #haskell solution: we're inserting packets into our new database. 
  
• April 10th, 2018: Tuesday's #haskell problem: 🎵 "Does anybody know what time it is?" 🎶 (bonus: name that tune) Tuesday's #haskell solution: "Hey, Mister! You got the time?" 
• April 9th, 2018: Monday's #haskell problem is to extract article tags from JSON then store them in a PostgreSQL lookup table. Monday's #haskell solution: Inserting tags for articles into a PostgreSQL database is a breeze! 
  
• April 6th, 2018: Friday's #haskell problem is to parse categories-as-JSON, strip it down to its essentials, and store in a PostgreSQL data table. Friday's #haskell solution uploaded categories to a PostgreSQL databse after 'removing the stupid.' That's a technical term. 
  
  
• April 5th, 2018: Thursday's #haskell problem is revising the database connector now that we're managing multiple databasen. Thursday #haskell solution is making connections to SQL databases configurable. Whoa. Edgy, tweeps! I'm really pressing the bleeding edge of technological advancement here with configurations and database connections. 
• April 4th, 2018: Wednesday's #haskell problem is storing authors in a PostgreSQL table. Wednesday's #haskell solution shows that transferring authors from articles to a SQL database is as easy as 1, 2, 3! 
  
  
• April 3rd, 2018: Tuesday's #haskell exercise: AUTHOR! AUTHOR! Is there an author in the house? Tuesday's #haskell solution: extracting author information from very unstructured data. 
• April 2nd, 2018: Monday's #haskell problem is to explore JSON to find the structure in the data. Monday's #haskell solution: oooh! Pritteh JSON! But what's this weirdness with the author-identifier?