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Start your free trialSara Crwly
2,453 PointsQuery instance variable in Ruby blocks
In the following example.....
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
end
end
monster = Monster.new("Fluffy")
monster.scream { puts "BOO!" }
I thought that if you state at the beginning- attr_reader :name, :actions
you would not have to use @actions again. However in the def scream method, it is referenced. Please could someone explain why.
Thanks, Sara
2 Answers
Seth Reece
32,867 PointsHi Sara,
Using attr_reader means that you do not have to use @, but does not make it that you can't. e.g. Both of these will pass the challenge:
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! "
end
end
monster = Monster.new("Fluffy")
monster.scream { puts "BOO!" }
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! "
end
end
monster = Monster.new("Fluffy")
monster.scream { puts "BOO!" }
Sara Crwly
2,453 Pointsthank you!