geeksam

if Rails.env.test? || Rails.env.development?
  module Kernel
    def __breadcrumb__(msg = "")
      return unless $debug
      msg = msg.to_s
      breadcrumb = ">>> #{caller.first}"
      breadcrumb << "\n--> #{msg}" if msg.present?
      Rails.logger.debug breadcrumb
      puts '', breadcrumb
    end

geeksam

module Enumerable
  def counts_by(&property)
    group_by(&property)               # Group my values by some interesting property
      .lazy                           # (in a potentially more GC-friendly way),
      .map {|x,xs| [ x, xs.length ] } # collapsing the sub-lists of values to simple counts...
      .sort_by(&:last)                # and show them in increasing order of frequency (so that,
                                      # if the list is very long, the high numbers are at the end)
  end
end