Trait puffin::algebra::dynamic_function::DynamicFunction

pub trait DynamicFunction: Fn(&Vec<Box<dyn Any>>) -> Result<Box<dyn Any>, FnError> + Send + Sync {
    fn clone_box(&self) -> Box<dyn DynamicFunction>;
}

Cloneable type for dynamic functions. This trait is automatically implemented for arbitrary closures and functions of the form: Fn(&Vec<Box<dyn Any>>) -> Box<dyn Any>

Clone is implemented for Box<dyn DynamicFunction> using this trick: https://users.rust-lang.org/t/how-to-clone-a-boxed-closure/31035/25

We want to use Any here and not VariableData (which implements Clone). Else all returned types in functions op_impl.rs would need to return a cloneable struct. Message for example is not.

Required Methods

fn clone_box(&self) -> Box<dyn DynamicFunction>

Trait Implementations

impl Clone for Box<dyn DynamicFunction>

fn clone(&self) -> Self

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Box<dyn DynamicFunction>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Display for Box<dyn DynamicFunction>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

Implementors

impl<F> DynamicFunction for Fwhere
    F: 'static + Fn(&Vec<Box<dyn Any>>) -> Result<Box<dyn Any>, FnError> + Clone + Send + Sync,