domhnall

def pretty_print(array_of_arrays)
  array_of_arrays.each do |array|
    puts "[#{array.join(",")}]"
  end
end

def combinations_for_free(array_of_arrays)
  array_of_arrays[0].product(*array_of_arrays[1...])
end

domhnall

def no_ensure
  :ok
end

def with_ensure
  :ok
ensure
  :ensure
end

domhnall

# To test yourself on the actual quiz, see 
# https://www.vector-logic.com/blog/posts/test-yourself-on-ruby-array-operations

def print_question_number(n)
  puts ["="*20, n, "="*20].join("   ")
end

# Array indexing options
print_question_number(1)
arr = ['a', 'b', 'c', 'd', 'e']

domhnall

# To test yourself on the actual quiz, see 
# https://www.vector-logic.com/blog/posts/test-yourself-on-ruby-object-model

puts "Question 1"
class First; end
f = First.new
puts f.class.superclass # Object
puts "\n\n"

puts "Question 2"

domhnall

# To test yourself on the actual quiz go to 
# https://www.vector-logic.com/blog/posts/test-yourself-on-operator-precdence-in-ruby

a = false
b = true
c = 3
d = 4

expressions = [
  "1 + 2 * 2", #  Outputs 5

domhnall

#!/bin/sh

if git rev-parse --verify HEAD >/dev/null 2>&1
then
	against=HEAD
else
	# Initial commit: diff against an empty tree object
	against=4b825dc642cb6eb9a060e54bf8d69288fbee4904
fi