Revisit concept of FIELDNAME_sync methods

[delano]

e.g. Make the value stored at KEY identical to the given list.

familia/lib/familia/redisobject.rb

Lines 468 to 489 in 029675c

	def last
	at(-1)
	end
	# TODO: def replace
	## Make the value stored at KEY identical to the given list
	# define_method :"#{name}_sync" do |*latest|
	# latest = latest.flatten.compact
	# # Do nothing if we're given an empty Array.
	# # Otherwise this would clear all current values
	# if latest.empty?
	# false
	# else
	# # Convert to a list of index values if we got the actual objects
	# latest = latest.collect { |obj| obj.index } if klass === latest.first
	# current = send("#{name_plural}raw")
	# added = latest-current
	# removed = current-latest
	# #Familia.info "#{self.index}: adding: #{added}"
	# added.each { |v| self.send("add_#{name_singular}", v) }
	# #Familia.info "#{self.index}: removing: #{removed}"
	# removed.each { |v| self.send("remove_#{name_singular}", v) }

    # TODO: def replace
    ## Make the value stored at KEY identical to the given list
    # define_method :"#{name}_sync" do |*latest|
    #  latest = latest.flatten.compact
    #  # Do nothing if we're given an empty Array.
    #  # Otherwise this would clear all current values
    #  if latest.empty?
    #    false
    #  else
    #    # Convert to a list of index values if we got the actual objects
    #    latest = latest.collect { |obj| obj.index } if klass === latest.first
    #    current = send("#{name_plural}raw")
    #    added = latest-current
    #    removed = current-latest
    #    #Familia.info "#{self.index}: adding: #{added}"
    #    added.each { |v| self.send("add_#{name_singular}", v) }
    #    #Familia.info "#{self.index}: removing: #{removed}"
    #    removed.each { |v| self.send("remove_#{name_singular}", v) }
    #    true
    #  end
    # end