ruby - Method behaving differently for 2 classes using same module method -

i had previous question asked here: i (think) i'm getting objects returned when expect array have 2 properties available may give background. having received solution that, moved showing each player hand. below module included in both dealer , player classes.

module hand    def show_hand       if self.class == dealer          #need cover 1 of 2 cards here. dealer doesn't show both!          print "the dealer showing: "          print self.hand[0].show_card          puts ''       elsif self.class == player          print "you have: "          self.hand.each |item|             item.show_card          end          puts ''       else          puts "a random person showing hand."       end    end end 

i know customization defeats purpose of module, using reinforce concept of modules. above solution worked fine dealer portion. when player portion called printed blank block. on .inspect of each "item" in player block confirmed items in fact card objects expected. here previous show_card method:

def show_card     "[#{@card_type} of #{@suit}]" end 

so returned string card_type , suit. able fix problem player object portion changing method this:

def show_card     print "[#{@card_type} of #{@suit}]" end 

why happening? i'm assuming has call "each" on player hand. curious difference , why these card objects wouldn't print without explicit "print" in there vice returning via string object.

hope descriptive enough. 1 baffles me , i'm trying grasp these little things since know prevent future errors this. thanks!

in ruby must print puts or print. returning string doesn't print it. reason dealer class prints because did print, in player class, noted, had no print. returned string without printing.

as noted, able fix including print:

def show_card   print "[#{@card_type} of #{@suit}]" end 

you instead:

def show_card   "[#{@card_type} of #{@suit}]" end  ...  module hand   def show_hand     if self.class == dealer       #need cover 1 of 2 cards here. dealer doesn't show both!       print "the dealer showing: "       puts self.hand[0].show_card   # print card     elsif self.class == player       print "you have: "       self.hand.each |item|         print item.show_card  # print card       end       puts ''     else       puts "a random person showing hand."     end   end end 

which little more "symmetrical" , prints want.

a more compact be:

def show_card   "[#{@card_type} of #{@suit}]" end  ...  module hand   def show_hand     if self.class == dealer       #need cover 1 of 2 cards here. dealer doesn't show both!       puts "the dealer showing: #{self.hand[0].show_card}"     elsif self.class == player       print "you have: "       self.hand.each { |item| print item.show_card }       puts ''     else       puts "a random person showing hand."     end   end end