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Start your free trialJason Woo
11,730 PointsBug? This should work
this runs an error
class Monster
attr_reader :name, :actions
def initialize(name)
@name = name
@actions = {
screams: 0,
scares: 0,
runs: 0,
hides: 0
}
end
def scream(&block)
actions[:screams] += 1
print "#{name} screams! "
yield if block_given?
end
end
monster = Monster.new("Fluffy")
monster.scream { puts "BOO!" }
1 Answer
Jay McGavren
Treehouse TeacherYou're close, but the directions sat to "modify the yield statement to send the monster instance to a block..." I won't give the whole challenge away, but you need to pass an argument to yield
. (Reply if you have trouble figuring out which argument.)
Jason Woo
11,730 PointsJason Woo
11,730 PointsI added the 'self' argument which worked. I'm not quite sure why it doesn't work without it though. The block doesn't ask or the argument.
How would the code look in order for a yield without the argument as I've written above to work?
Jay McGavren
Treehouse TeacherJay McGavren
Treehouse TeacherYour original code,
yield if block_given?
, would yield to the block without passing the block an argument. Even if you do provide an argument toyield
, the block you provide will ignore it if the block doesn't have a parameter. (Ruby requires that the number of arguments in a method call match the number of method parameters, but it's less strict about the number of arguments toyield
and the number of block parameters.)