.TH Path 3U "6 August 1990" "Unidraw" "InterViews Reference Manual"
.SH NAME
Path \- record of connectors visited during dataflow
.SH SYNOPSIS
.B #include <Unidraw/path.h>
.SH DESCRIPTION
A Path object stores a record of connectors that have been visited
during dataflow.  Transfer functions, state variables, connectors, and
other components can use the information in the path to determine
whether data should be transmitted, for example, to avoid circular
flow.
.SH PUBLIC OPERATIONS
.TP
.B "Path(Path* = nil)"
Instantiate a new path, optionally with a duplicate of the information
contained in the given path.
.TP
.B "virtual void Visit(Connector*)"
Register a connector as having been visited.
.TP
.B "virtual boolean Visited(Connector*)"
Return whether or not a connector has been registered previously with
the path.
.SH SEE ALSO
Connector(3U), StateVar(3U), TransferFunct(3U)