# Copyright 2005 Kevin Reid, under the terms of the MIT X license
# found at http://www.opensource.org/licenses/mit-license.html ................

  ? pragma.enable("dot-props")
  > def [ALL, NOW, ADVANCE, QUERY, ELEMENTS] := \
  >     [EIO::ALL, EIO::NOW, EIO::ADVANCE, EIO::QUERY, EIO::ELEMENTS]
  > null

  ? def [o, i] := EIO.pipe("bufferLimit" => 10, "synchronous" => true, "label" => "test")
  # value: [->"test" pipe, <-"test" pipe]

  ? o.available()
  # value: 10
  
  ? i.available()
  # value: 0
  
  ? o.write("abc")

  ? o.available()
  # value: 7
  
  ? i.available()
  # value: 3
  
  ? i.read(0, ALL)
  # value: ['a', 'b', 'c']
  
  ? i.available()
  # value: 0
  
  ? o.available()
  # value: 10
  
Asynchronous
  
  ? def [o, i] := EIO.pipe("synchronous" => false, "label" => "async test")
  # value: [->"async test" pipe, <-"async test" pipe]

  ? i.whenAvailable(1, thunk { println(`${i.available()} available.`) })
  # value: <Promise>
  
  ? o.write("xy"); "result"
  # value: "result"
  
  # stdout: 2 available.
  #