I am supposed to:

• Capitalize the first letter of string.
• Capitalize every word except articles (the, a, an), conjunctions (and), and prepositions (in).
• Capitalize i (as in "I am male.").
• Specify the first word of a string (I actually have no idea what this means. I'm trying to run the spec file to test other functions).

Here's my code:

class Book
  def initialize(string)
    title(string)
  end
  def title(string)
    arts_conjs_preps = %w{ a an the and
                           but or nor for
                           yet so although
                           because since
                           unless despite
                           in to
                           }
    array = string.downcase.split
    array.each do |word|
        if (word == array[0] || word == "i") then word = word.capitalize
        if arts_conjs_preps !include?(word) then word = word.capitalize
    end
    puts array.join(' ')
  end
end

puts Book.new("inferno")

Ruby says I'm messing up at:

puts Book.new("inferno") <--(right after the last line of code) 

I get exactly the same error message with this test code:

def title(string)
    array = string.downcase.split
    array.each do |word|
        if word == array[0] then word = word.capitalize     
    end
  array.join(' ')
end

puts title("dante's inferno")

The only other Stack Overflow thread regarding this particular syntax error that did not suggest trailing or missing ends or .s as the root of the problem is here. The last comment recommends deleting and recreating the gemset, Which sounds scary. And I'm not sure how to do.

Any thoughts? Simple solution? Resources to help?

Solution

class Book
    def initialize(string)
        title(string)
    end

    def title(string)
    arts_conjs_preps = %w{ a an the and
                       but or nor for
                       yet so although
                       because since
                       unless despite
                       of in to
                               }
    array = string.downcase.split
    title = array.map do |word|
          if (word == array[0] || word == "i") || !arts_conjs_preps.include?(word)  
            word = word.capitalize 
          else
            word
          end
        end
      puts title.join(' ')
    end
end

Book.new("dante's the inferno")