Trait Holder 

pub trait Holder {
    // Required methods
    fn scene(&self) -> &Scene;
    fn apply(&mut self, edits: &Edits) -> Result<Applied, String>;
}

Where a design’s one scene is held: what resolving it again reads the scene from, and brings it across by — by edits applied to it there, once, and to whatever is kept beside it, like a drawing.

Required Methods

fn scene(&self) -> &Scene

The scene as it is now.

fn apply(&mut self, edits: &Edits) -> Result<Applied, String>

Applies edits to the scene, or says why they don’t apply, leaving it as it was.

Dyn Compatibility

This trait is dyn compatible.

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

Implementors