Derive Macro depends::derives::Value

#[derive(Value)]
{
    // Attributes available to this derive:
    #[depends]
}

Implement necessary traits for making this type a valid value in either an InputNode or DerivedNode.

Hashing

By default, this will assume the type implements Hash. If it doesn’t, you must either mark a field you wish to use as a hash with #[depends(hash)], or mark the type itself as #[depends(unhashable)].

Note that marking a node as unhashable will cause any node with an edge to it to consider its dependencies dirty on every resolve. In the vast majority of cases you should hash a field instead.

Cleaning

By default, this will implement a no-op Clean implementation. This means that nothing will be done to clean the node between resolves.

If you wish to implement Clean manually, you can do so by using the #[depends(custom_clean)] attribute on the struct and providing your implementation.

Any transient state (such as ‘the things which have changed since the last resolve’) must be cleared up in this method.