Guess a number, any number, between 1 and 10

I am learning Ruby and would like to know how I am doing as far as writing the actual code.

Please keep in mind that this is my first Ruby script program, but I am trying to learn ruby in a very short period of time.

I would like to know about nitpicks in the language that every Ruby writer should now, nuances in syntax, and other Ruby specific ... things.

$randomNumber = rand(10) + 1

def guessRandomNumber   
    puts "Guess a number between 1 and 10"
    guess = gets
    if Integer(guess) == $randomNumber 
        puts "Right on, good guess"
    elsif Integer(guess)  $randomNumber 
        puts "too high"
        puts "please, guess again"
        guessRandomNumber
    else
        puts "is that even a number? please, guess again"
        guessRandomNumber
    end
end

guessRandomNumber

puts "bye"
gets

Global variables

Don't use global variables(like $bar). It is always bad practice because you can mutate the global variable from anywhere. The alternative is:
RANDOM_NUMBER = rand(1..10), notice that you can pass range as an argument of rand. rand(10) + 1 can return 11 so it isn't correct.

Style

Huge percentage of the Ruby community follow the style guide and this
is the most popular one Ruby style guide.

Style issues:

• Use snake case for the names of methods and variables.

• Use double quotes only if you use interpolation or special symbols like \n.

About the implementation

IMO will be more readable like this:

def guess_random_number
  puts 'Guess a number between 1 and 10'

  random_number = rand(1..10)

  while random_number != (guess_number = gets.to_i)
    if guess_number < random_number
      puts "too low \nplease, guess again"
    else
      puts "too high \nplease, guess again"
    end
  end

  puts "Right on, good guess \nbye"
end

guess_random_number

You see there is no need to expose the variable in the global scope.

StackExchange Code Review Q#128874, answer score: 7