Ruby language basic, programming homework help

  

2. Download the file called MegaGreeter.rb from blackboard and save it in the working folder you created last week. (10pts)a. Explain what is happening for each line of this piece of code ? How is it different from what you would have done in Java?def say_hi  if @names.nil?  puts “…”  elsif @names.respond_to?(“each”)  @names.each do |name|  puts “Hello #{name}!”  end  else  puts “Hello #{@names}!”  end  endb. Explain what is happening for each line of this piece of code? What does the join method do?def say_bye  if @names.nil?  puts “…”  elsif @names.respond_to?(“join”)  # Join the list elements with commas  puts “Goodbye #{@names.join(“, “)}.  Come back soon!”  else  puts “Goodbye #{@names}.  Come back soon!”  endc. In the irb prompt type in  require ‘MegaGreeter’ (You need to be in the same directory as the MegaGreeter.rb file you downloaded). Instantiate a MegaGreeter object. Now Type appropriate commands manipulating the object you created to  i. Greet and say goodbye to the whole worldii.Greet and say Goodbye to a particular personiii. Greet and say Goodbye to a list of nameshere the MegaGreeter.rb  file #!/usr/bin/env ruby

class MegaGreeter
attr_accessor :names

Don't use plagiarized sources. Get Your Custom Essay on
Ruby language basic, programming homework help
Just from $10/Page
Order Essay

# Create the object
def initialize(names = “World”)
@names = names
end

# Say hi to everybody
def say_hi
if @names.nil?
puts “…”
elsif @names.respond_to?(“each”)
# @names is a list of some kind, iterate!
@names.each do |name|
puts “Hello #{name}!”
end
else
puts “Hello #{@names}!”
end
end

# Say bye to everybody
def say_bye
if @names.nil?
puts “…”
elsif @names.respond_to?(“join”)
# Join the list elements with commas
puts “Goodbye #{@names.join(“, “)}. Come back soon!”
else
puts “Goodbye #{@names}. Come back soon!”
end
end

end
if __FILE__ == $0
mg = MegaGreeter.new
mg.say_hi
mg.say_bye

# Change name to be “Zeke”
mg.names = “Zeke”
mg.say_hi
mg.say_bye

# Change the name to an array of names
mg.names = [“Albert”, “Brenda”, “Charles”,
“Dave”, “Engelbert”]
mg.say_hi
mg.say_bye

# Change to nil
mg.names = nil
mg.say_hi
mg.say_bye
end

Place your order
(550 words)

Approximate price: $22

Calculate the price of your order

550 words
We'll send you the first draft for approval by September 11, 2018 at 10:52 AM
Total price:
$26
The price is based on these factors:
Academic level
Number of pages
Urgency
Basic features
  • Free title page and bibliography
  • Unlimited revisions
  • Plagiarism-free guarantee
  • Money-back guarantee
  • 24/7 support
On-demand options
  • Writer’s samples
  • Part-by-part delivery
  • Overnight delivery
  • Copies of used sources
  • Expert Proofreading
Paper format
  • 275 words per page
  • 12 pt Arial/Times New Roman
  • Double line spacing
  • Any citation style (APA, MLA, Chicago/Turabian, Harvard)

Our guarantees

Delivering a high-quality product at a reasonable price is not enough anymore.
That’s why we have developed 5 beneficial guarantees that will make your experience with our service enjoyable, easy, and safe.

Money-back guarantee

You have to be 100% sure of the quality of your product to give a money-back guarantee. This describes us perfectly. Make sure that this guarantee is totally transparent.

Read more

Zero-plagiarism guarantee

Each paper is composed from scratch, according to your instructions. It is then checked by our plagiarism-detection software. There is no gap where plagiarism could squeeze in.

Read more

Free-revision policy

Thanks to our free revisions, there is no way for you to be unsatisfied. We will work on your paper until you are completely happy with the result.

Read more

Privacy policy

Your email is safe, as we store it according to international data protection rules. Your bank details are secure, as we use only reliable payment systems.

Read more

Fair-cooperation guarantee

By sending us your money, you buy the service we provide. Check out our terms and conditions if you prefer business talks to be laid out in official language.

Read more

Order your essay today and save 30% with the discount code ESSAYSHELP