Ruby 2.7 adds Enumerable#filter_map

Ruby 2.7 has added Enumerable#filter_map as a shorthand for filter + map in a single call

Ruby 2.7 adds Enumerable#tally

Ruby 2.7 has added Enumerable#tally. It helps to tally occurrences of elements in an Enumerable.

Ruby 2.7 adds shorthand operator for Object#method

Ruby 2.7 adds experimental shorthand operator for Object#method. Allows method object access using :, example File.:basename