Ruby Blocks Extra Credit

Hi Richard

I am just starting Ruby foundations for a couple of weeks now. Your code was really helpful to me when trying the extra credit for the 'blocks' section. Thank you.

I had it in my mind that I wanted to do something a little different (maybe I misunderstood the question).

I wanted to have the bench marking test perform a number of times then display the results for each test.

I had trouble with variables inside/ outside the class (I'm not quite understanding that part), when I learn more I will come back to that. If anyone could help with the correct way to acheive this, I would appreciate any advice.

I finally got something that resembles what I was hoping for, although I'm pretty sure it's not the right way to go about it (I had fun trying...anyways) this was my code for the assignment:

class SimpleBenchmarker
    def self.go(how_many=i, &block)

        puts "-----------------------------Benchmarking started----------------------------------"
        start_time = Time.now
        puts "Start Time:\t#{start_time}\n\n"
        how_many.times do |a|
            print "."
            block.call
        end
        print "\n\n"
        end_time = Time.now
        puts "End Time:\t#{end_time}\n"
        puts "-----------------------------Benchmarking finished---------------------------------"
        puts "Result:\t\t#{end_time - start_time} seconds"
        total = end_time - start_time
        puts "Total = #{total}"
         $results.push total

    end
end
$results = Array.new
def run_test
puts "The running results are:  #{$results.sort}"
puts "How many iterations would you like to run this test for? (0 or blank to exit): "
i = 0

i = gets.chomp.to_i

SimpleBenchmarker.go i do
    time = rand(0.1..1.0)
    sleep time
end

if i > 0
    run_test
else
    return nil
end
end
run_test

Thank you Richard Luick and Joel Brennan. The .round and .to_i helped me. I then played around with it. I wanted to pretty up the output, and clean it up a bit. I also wanted to add an "s" to the end of each iteration time, and not display it as an array. It might be a worthless endeavor, but I am stubborn. Anyways:

class SimpleBenchmarker
    def self.go(how_many=1, &block)
        $sorted_time = Array.new
        puts "\n--------------Benchmarking started----------------"
        start_time = Time.now
        puts "Start Time:\t#{start_time}\n\n"
        how_many.times do |a|
            print "."
            block.call
        end
        print "\n\n"
        end_time = Time.now
        puts "End Time:\t#{end_time}\n"
        puts "-------------Benchmarking finished----------------\n\n"
        result_time = end_time - start_time
        puts "Total time:\t\t#{result_time.round(3)} seconds\n\n"
        puts "The run times for the iterations from shortest to longest was: #{$sorted_time.sort.join("s, ")}s\n\n"
    end
end
    print "How many times? "
    t = gets.to_i
SimpleBenchmarker.go t do
    time = rand(0.1..1.0).round(3)
    $sorted_time.push(time)
    sleep time
end

Results in:

How many times? 5

--------------Benchmarking started----------------
Start Time:     2014-10-30 18:36:13 -0400

.....

End Time:       2014-10-30 18:36:15 -0400
-------------Benchmarking finished----------------

Total time:             2.039 seconds

The run times for the iterations from shortest to longest was: 0.151s, 0.291s, 0.297s, 0.4s, 0.897s

Feedback would be cool as I don't know if I reached this result in the best way.

Richard Luick - does yours work? I get this:

PS C:\Users\David\treehouse\projects\ruby\source\blocks> ruby benchmarker_extra.rb How many times should we run the program: 3 -----Benchmarking Started----- Start Time: 2014-09-21 20:11:25 -0700

...

End Time: 2014-09-21 20:11:27 -0700 -----Benchmarking Finished----- Result: 1.669095 seconds The run times for the iterations from quickest to longest: [0.23917, 0.51652, 0.90964]PS C:\Users\David\treehouse\projects\ruby\source\blocks>

Hi Richard,

Thanks, I hope you are well.

I think mine (kind of) works, but in a different way. ie: the total result of the benchamarking test is stored in an array. If I then chose to run a further test that is pushed also into the same array. If I run a third test that total is pushed in and so on.

I'm pretty sure my code is messy and not right on this, but I kind of got it working and was looking for advice to make it right.

The array is sorted quickest to longest.

I thought at first glance your method was sorting each iteration in a single test, where as I wanted to sort the total time of each test until the user exited the program. I think your method is right. (I just had an idea and I wanted to try something different).

*I Just looked at the question again. "Try expanding upon that by asking the user how many iterations they would like to run and then sorting the output from the quickest to slowest finding."

Your method is correct. Mine is sorting the total of each test, so therefore wrong. Sorry :)

Cheers

Joel