Range maximum benchmarking.

require "benchmark"

range = 1...1000000
n = 100

Benchmark.bmbm do |b|
  b.report "r.entries.last" do
    n.times do
      f = range.entries.last
    end
  end
  
  b.report "r.entries[-1]" do
    n.times do
      f = range.to_a[-1]
    end
  end
  
  b.report "last = nil; r.each { |v| last = v }" do
    n.times do
      f = nil
      range.each { |value| f = value }
    end
  end
  
  b.report "r.max" do
    n.times do
      f = range.max
    end
  end
  
  b.report "r.exclude_end? ? r.last.pred : r.last" do
    n.times do
      f = range.exclude_end? ? range.last.pred : range.last
    end
  end
end