Ruby 2.7 adds beginless rangeA beginless range is experimentally introduced in ruby 2.7.
Ruby 2.7 adds Enumerable#filter_mapRuby 2.7 has added Enumerable#filter_map as a shorthand for filter + map in a single call
Ruby 2.7 adds Enumerable#tallyRuby 2.7 has added Enumerable#tally. It helps to tally occurrences of elements in an Enumerable.
Ruby 2.7 adds shorthand operator for Object#methodRuby 2.7 adds experimental shorthand operator for Object#method. Allows method object access using :, example File.:basename