#-----------------------------------------------------------------------------------------------------------
@$gliding_window = ( width, method ) ->
  throw new Error "µ32363 expected a number, got a #{type}" unless ( CND.type_of width ) is 'number'
  section = []
  send    = null
  #.........................................................................................................
  push = ( x ) ->
    section.push x
    R =
    while section.length > width
      send section.shift()
    return null
  #.........................................................................................................
  return @$ 'null', ( new_data, send_ ) =>
    send = send_
    if new_data?
      push new_data
      method section if section.length >= width
    else
      while section.length > 0
        send section.shift()
      send null
    return null