class RSpec::Benchmark::ComplexityMatcher::Matcher

def in_range(start, limit = (not_set = true))
  case start
  when Array
    @start, *, @limit = *start
    @ratio = start[1] / start[0]
  when Numeric
    @start, @limit = start, limit
  else
    raise ArgumentError,
        "Wrong range argument '#{start}', it expects an array or numeric start value."
  end
  self
end