Ruby’s method_missing let’s you write some weird code:
class Poet
def initialize
@words = []
end
def method_missing(message, *args, &block)
@words << message
message.to_s.end_with?("?") ? sentence : self
end
private
def sentence
@words.join(" ")
end
end
puts Poet.new.why.not.go.for.a.walk?
I’ve seen method_missing used to handle unexpected message on instances of a
class before, but never for class methods. But, like, why not?
class LoudSpeaker
def self.method_missing(message, *args, &block)
if [:exclaim, :yodel, :howl, :sob, :beg].include?(message)
puts args.first
else
# we don't want to handle this missing method, we want Ruby to raise the
# NoMethodError it ought to
super
end
end
end
LoudSpeaker.exclaim "helloooo!"
It’s just methods, so go for it.
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