Custom runtime evaluation/profiling

profiling-example.rb

class Array
  @@caller_counter = {}
  def include_with_caller?(value)
    key = caller[0,4].join('|')
    @@caller_counter[key] = (@@caller_counter[key] || 0) + 1
    include_without_caller?(value)
  end
  alias_method_chain :include?, :caller
  def self.callers
    @@caller_counter
  end
  def self.print_callers
    @@caller_counter.map do |key, value|
      trace = key.split('|')
      %{\n#{trace.first.ljust(150)} #{value}\n#{trace[1..-1].join("\n")}}
    end.join("\n--") + "\n"
  end
end