GraphNodePtrAt

Description

Get pointer to node payload at given node id.

Parameters

Success

Returns a pointer of type GRAPH_NODE_TYPE(g) * to the payload slot. The graph is not modified. The pointer is valid until the slot is committed for deletion.

Failure

Does not return - aborts via LOG_FATAL for an invalid or stale node id (caller bug).

Usage example (Cross-references)

        result      = result && !GraphHasEdge(&graph, blue, green);
        result      = result && !GraphHasEdge(&graph, red, blue);
        result      = result && (ZstrCompare(*GraphNodePtrAt(&graph, red), "red") == 0);
    
        GraphDeinit(&graph);