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Contents
module ShortLived extend Trait
class LifetimeMissingError < RuntimeError
def initialize
super <<-MESSAGE
A ShortLived thing must define method
lifetime lifetime = nil, &block
with either params
lifetime 74 # some value
or
lifetime { 50 + rand(50) } # some block
to define how long the thing should live until it is destroyed.
MESSAGE
end
end
def self.included klass
klass.extend ClassMethods
end
def initialize window
raise LifetimeMissingError.new unless self.respond_to? :lifetime
super window
threaded self.lifetime do
self.destroy!
end
end
module ClassMethods
def lifetime lifetime = nil, &block
block = lambda { lifetime } unless block_given?
define_method :lifetime, &block
end
end
end
Version data entries
33 entries across 33 versions & 1 rubygems