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Celluloid::Properties

Properties define inheritable attributes of classes, somewhat similar to Rails cattr_*/mattr_* or class_attribute

Public Instance Methods

property(name, opts = {}) click to toggle source
# File lib/celluloid/properties.rb, line 5
def property(name, opts = {})
  default   = opts.fetch(:default, nil)
  multi     = opts.fetch(:multi, false)
  ivar_name = "@#{name}".to_sym

  ancestors.first.send(:define_singleton_method, name) do |value = nil, *extra|
    if value
      value = value ? [value, *send(name), *extra].uniq : [] if multi
      instance_variable_set(ivar_name, value)
    elsif instance_variables.include?(ivar_name)
      instance_variable_get(ivar_name)
    elsif superclass.respond_to? name
      superclass.send(name)
    else
      default
    end
  end
end

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