Method add_edge

nodedb-graph/src/csr/index/mutation.rs:15–17

Incrementally add an unweighted edge (goes into mutable buffer). Uses weight 1.0 if the graph already has weighted edges. Returns `Err(GraphError::LabelOverflow)` if the label id space is exhausted. Production callers should always surface this to the client; silently ignoring it reproduces the silent-wrap bug the `u32` widening was meant to fix.

(&mut self, src: &str, label: &str, dst: &str)

    /// client; silently ignoring it reproduces the silent-wrap bug the
    /// `u32` widening was meant to fix.
    pub fn add_edge(&mut self, src: &str, label: &str, dst: &str) -> Result<(), crate::GraphError> {
        self.add_edge_internal(src, label, dst, 1.0, false)
    }

    /// Incrementally add a weighted edge (goes into mutable buffer).
    ///