Kolmar questions

Kolmar answers

• Haskell's mapM equivalent for Scala cats
• Find the lowest number from last k elements in an infinite set of numbers
• How to write Haskell-do-notation in Scala
• Scala - flattening a tree structure
• Scala: isInstanceOf followed by asInstanceOf
• Upper and Lower bound on scala type
• Algorithm to find the length of longest suffix between a String and a prefix of the String
• Predef.StringCanBuildFrom's behaviour
• Why does Scala's Future.onComplete needs an ExecutionContext
• scala - idiomatic way to change state of class