Ruby Ruby Blocks Working With Blocks Build a Simple Benchmarker

Simple Benchmarker code wrong

Hi, I'm following along with the video and trying to run my code (below) but it returns an error saying "undefined local variable or method benchmarker". I double checked the video but I'm pretty sure I have exactly what Jason does. Any suggestions are appreciated! Thanks.

class SimpleBenchmarker
 def run(description, &block)
    start_time = 
    end_time =
    elapsed = end_time - start_time
    puts "\n"
    puts "#{description} results"
    puts "Elapsed time: #{elapsed} seconds"

benchmarker = "Sleep a random amount of time" do
  5.times do 
    print "."

1 Answer

Hi Heather,

I just check your code example to test it which is correct. Not sure why you got error messages, can you refresh your browser again?