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

ALISA FORAN
ALISA FORAN
11,961 Points
Posted by ALISA FORAN
ALISA FORAN
11,961 Points

Shown below is the SimpleBenchmarker class task...

Shown below is the SimpleBenchmarker class. Instantiate a variable named benchmarker which is an instance of the SimpleBenchmarker class.

I am getting an argument error on this. Anyone know why?

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
end

3 Answers

William Li
PLUS
William Li
Courses Plus Student 26,867 Points
William Li
William Li
Courses Plus Student 26,867 Points

Take a look at the run method

def run(description, &block)

benchmark.run takes one argument description, and a block.

You haven't provided the description argument yet, that's why you're getting the Argument error.

benchmarker.run "whatever" do
end

this should fix it.

kateperris2
kateperris2
11,495 Points
kateperris2
kateperris2
11,495 Points

I still can't figure this out. How and where to add the description?

William Li
William Li
Courses Plus Student 26,867 Points
William Li
William Li
Courses Plus Student 26,867 Points

Hi, kateperris2 

benchmarker.run "whatever" do
end

The "whatever" here is the description, you can fill it with any value you like.