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Ruby Ruby Blocks Working With Blocks Block Method Practice: Custom Classes

Jenna Williams
Jenna Williams
448 Points
Posted by Jenna Williams
Jenna Williams
448 Points

Trouble with challenge 2 of 2

I have no idea how to get past this part, despite many attempts and rewatching the video...

simple_benchmarker.rb 
class SimpleBenchmarker
  def run(description, &block)
    start_time = Time.now
    block.call
    end_time = Time.now
    elapsed = end_time - start_time

    puts "\n#{description} results"
    puts "Elapsed time: #{elapsed} seconds"
  end
end

benchmarker = SimpleBenchmarker.new
benchmarker.run do 
  puts "#{description}" 
  5.times do
      puts "Hiya"
  end
end

2 Answers

William Li
PLUS
William Li
Courses Plus Student 26,868 Points
William Li
William Li
Courses Plus Student 26,868 Points

Hi, Jenna Williams , you see, here def run(description, &block), the run method was defined to take one argument description, and a block.

So when calling this method, you need to supply a description argument, otherwise it'll give you an ArgumentError exception.

benchmarker.run "whatever description" do
  5.times do
    puts "Hiya"
  end
end

this should fix it.

jocelyn alsdorf
jocelyn alsdorf
22,454 Points
jocelyn alsdorf
jocelyn alsdorf
22,454 Points

Geez I was so stuck on this one too. Thanks for the help.

William Li
William Li
Courses Plus Student 26,868 Points
William Li
William Li
Courses Plus Student 26,868 Points

you're welcome, jocelyn alsdorf , I'm glad you find this answer helpful :P

Jenna Williams
Jenna Williams
448 Points
Jenna Williams
Jenna Williams
448 Points

Aha, thank you! For some reason my brain said I had to call the description from above.