(guile.info.gz) Closing

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 27.4 Closing
 ============
 
  -- Scheme Procedure: close-port port
  -- C Function: scm_close_port (port)
      Close the specified port object.  Return `#t' if it successfully
      closes a port or `#f' if it was already closed.  An exception may
      be raised if an error occurs, for example when flushing buffered
      output.  See also  close Ports and File Descriptors, for a
      procedure which can close file descriptors.
 
  -- Scheme Procedure: close-input-port port
  -- C Function: scm_close_input_port (port)
      Close the specified input port object.  The routine has no effect
      if the file has already been closed.  An exception may be raised
      if an error occurs.  The value returned is unspecified.
 
      See also  close Ports and File Descriptors, for a procedure
      which can close file descriptors.
 
  -- Scheme Procedure: close-output-port port
  -- C Function: scm_close_output_port (port)
      Close the specified output port object.  The routine has no effect
      if the file has already been closed.  An exception may be raised
      if an error occurs.  The value returned is unspecified.
 
      See also  close Ports and File Descriptors, for a procedure
      which can close file descriptors.
 
  -- Scheme Procedure: port-closed? port
  -- C Function: scm_port_closed_p (port)
      Return `#t' if PORT is closed or `#f' if it is open.
 

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