Learn Ruby, Koans Options

[Uronacid]

Hello All,

So I've been trying to learn a new programming language (Ruby). It's like the anti-python. They're both scripting languages. However, where python tends to be very ridged and strict with regards to syntax, ruby is very lenient. In fact, I can see many programmers hating it for that very reason. Sometimes the code you write in this language can be so loose, but black magic will allow it to run properly.

Anyway, there is a great tutorial which cover a good amount of the ruby language, syntax, structure, and a few functions/libraries. I encourage you all to install the language on your desktop and install Ruby Koans.

Ruby works on any operating system, and the base syntax is the same for each. There are a few functions that are custom to an OS. In fact, Ruby on windows is really sweet because it is very easy to access WMI.

Install: http://www.ruby-lang.org/en/downloads/
Koans: http://rubykoans.com/

I'm on the koan "about_iteration.rb". I love this language. Figured I'd share it with you guys.

[mipadi]

I did this for about_scoring_project:

CODE

def score(dice)
  sum = 0
  sum += 1000 if dice.count(1) >= 3
  2.upto(6).each { |n| sum += (n * 100) if dice.count(n) >= 3 }
  sum += (dice.count(1) % 3) * 100
  sum += (dice.count(5) % 3) * 50
end

[Uronacid]

I did this for about_scoring_project:

CODE

def score(dice)
  sum = 0
  sum += 1000 if dice.count(1) >= 3
  2.upto(6).each { |n| sum += (n * 100) if dice.count(n) >= 3 }
  sum += (dice.count(1) % 3) * 100
  sum += (dice.count(5) % 3) * 50
end

Very cool,

I'm not familiar with the "upto" method. I would have written (2..6).each

My buddy from Agora Games wrote the following:

CODE

def score(dice)
      count = [0, 0, 0, 0, 0, 0]
      dice.each { |roll| count[roll - 1] += 1 }
    
      (count[0] / 3) * 1000 +
      (count[1] / 3) * 200 +
      (count[2] / 3) * 300 +
      (count[3] / 3) * 400 +
      (count[4] / 3) * 500 +
      (count[5] / 3) * 600 +
      (count[0] % 3) * 100 +
      (count[4] % 3) * 50
    end

I thought it was pretty interesting how he didn't declare a variable for the score, and instead used a plus sign at the end of each line.

Here is my answer for the DiceSet class in about_dice_project.rb:

CODE

class DiceSet

    attr_reader :values

    def roll(num_of_dice)
        @values = num_of_dice.times.map{ 1 + rand(6) }
    end
    
end