Trait Setter 

pub trait Setter<T, N>
where
    N: Node + 'static,
    Self: Getter<T, N>,
{
    // Provided methods
    fn set(&self, prompt: &mut Prompt, value: T) -> Result<()> { ... }
    fn set_from(
        &self,
        prompt: &mut Prompt,
        output_node: &str,
        value: T,
    ) -> Result<()> { ... }
    fn set_node(&self, prompt: &mut Prompt, node: &str, value: T) -> Result<()> { ... }
    fn set_value(&self, node: &mut dyn Node, value: T) -> Result<()> { ... }
}

A trait for setting values on nodes.

This trait is implemented for types that can be used to set values on nodes. Usually, this trait does not need to be implemented directly, as it is implemented for all types that implement Getter.

Provided Methods

fn set(&self, prompt: &mut Prompt, value: T) -> Result<()>

Uses a heuristic to find a Node and set the value on it.

Inputs

• prompt - A mutable reference to a Prompt.

Returns

Ok(()) on success, or an error if the node could not be found.

fn set_from( &self, prompt: &mut Prompt, output_node: &str, value: T, ) -> Result<()>

Finds a Node leading into the given output_node and sets the value on it.

Inputs

• prompt - A mutable reference to a Prompt.

Returns

Ok(()) on success, or an error if the node could not be found.

fn set_node(&self, prompt: &mut Prompt, node: &str, value: T) -> Result<()>

Sets the value on the node with id node.

Inputs

• prompt - A mutable reference to a Prompt.
• node - The id of the node to set the value on.

Returns

Ok(()) on success, or an error if the node could not be found.

fn set_value(&self, node: &mut dyn Node, value: T) -> Result<()>

Sets the value on the given Node.

Inputs

• node - A mutable reference to a Node.

Returns

Ok(()) on success, or an error if the node could not be found.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors

impl<G, T, N> Setter<T, N> for G

where G: Getter<T, N>, N: Node + 'static,