tutorial error

error

1.9.3p327 :013 > pets = %w(rex nibbles fred)
 => ["rex", "nibbles", "fred"] 
1.9.3p327 :014 > puts pets.map do |pet|
1.9.3p327 :015 >     pet.upcase
1.9.3p327 :016?>   end
#<Enumerator:0x007f9b4d02a4f0>
 => nil 
1.9.3p327 :017 > puts pets.map(&:upcase)
REX
NIBBLES
FRED
 => nil

1.9.3p194 :002 > %w(foo bar baz)
=> ["foo", "bar", "baz"]
1.9.3p194 :003 > array = %w(foo bar baz)
=> ["foo", "bar", "baz"]
1.9.3p194 :004 > result = array.map do |x|
1.9.3p194 :005 > x.upcase
1.9.3p194 :006?> end
=> ["FOO", "BAR", "BAZ"]
1.9.3p194 :007 >
1.9.3p194 :008 >
1.9.3p194 :009 > puts result.inspect

you didn't do this:

puts pets.map do |pet|
pet.upcase
end

the 2 are equivalent but result for some reason is different...

@schneems yep, @samueljseay is right.

@schneems on the video I think you didn't want "puts" in there.