Comment by phoronixrly

This article is kind of niche... My favourite Ruby delights are among others, methods provided by the Enumerable mixin https://rubyapi.org/3.1/o/enumerable. There's a pile of functionality there that helps with tedious tasks. E.g. here's a solution to this year's AOC challenge #6 using Enumerable's each_cons method:

    File.read('input6.txt').chars.each_cons(4).find_index { _1.uniq == _1 } + 4