nsauk

# Pass in an enumeration of data and
# (optionally) a block to extract the grouping aspect of the data.
#
# Optional: sort_by lambda (operates on group key and count)

def puts_hist(data, sort_by: nil, &block)
  data = data.map(&block) if block
  counts = data.each_with_object(Hash.new(0)) { |k, h| h[k] += 1 }
  max = counts.values.max
  width = ENV['COLUMNS'].to_i