Trait RoutingTableExt 

pub trait RoutingTableExt: RoutingTable + Sealed {
    // Provided method
    fn modify(
        &mut self,
        prefix: IpNet,
        modify: impl FnOnce(Option<&mut Self::Value>) -> RouteModification<Self::Value>,
    ) -> Option<Self::Value> { ... }
}

Automatic extension methods for implementors of RoutingTable.

Provided Methods

fn modify( &mut self, prefix: IpNet, modify: impl FnOnce(Option<&mut Self::Value>) -> RouteModification<Self::Value>, ) -> Option<Self::Value>

Modify the route at prefix using the modify closure.

The closure may return:

• RouteModification::Insert: a route will be inserted with the provided value (or replaced if it already exists).
• RouteModification::Remove: the route will be removed (if it exists).
• RouteModification::Noop: the table will not be modified. The closure may modify the value stored in the route (if present).

If the route was replaced or removed, the return value contains the value that was previously stored.

Prefer to use insert or remove if possible; this function is intended as a more-efficient alternative to lookup_prefix_exact-then-mutate.

Examples

let mut table = SimpleTable::default();
let result = table.modify("0.0.0.0/0".parse().unwrap(), |node| {
    assert_eq!(None, node);
    RouteModification::Insert(4)
});
assert_eq!(None, result);
assert_eq!(Some(&4), table.lookup("1.2.3.4".parse().unwrap()));

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors

impl<T> RoutingTableExt for T

where T: RoutingTable,