Finds and returns an edge in a graph given two items.

capi

find-graph-edge `graph` `from` `to` => `edge`

graph⇩ |
A graph-pane. |

from⇩ |
An item in graph. |

to⇩ |
An item in graph. |

edge |
A graph edge, or `nil` . |

The generic function `find-graph-edge`

finds the edge in `graph` that goes from the node corresponding to `from` to the node corresponding to `to`.

If there is no such edge, `find-graph-edge`

returns `nil`

.

*CAPI User Guide and Reference Manual (Macintosh version) - 01 Dec 2021 19:31:27*