Trait DefaultFn 

pub trait DefaultFn<A, I, T>: Send + 'static {
    // Required method
    fn execute(&self, scope: &mut Scope<I>) -> Result<Option<T>>;
}

Default function.

Required Methods

fn execute(&self, scope: &mut Scope<I>) -> Result<Option<T>>

Executes the default function.

Errors

This method returns an error if the function fails to execute.

Dyn Compatibility

This trait is dyn compatible.

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

Implementors

impl<F, R, I, T> DefaultFn<ForId, I, T> for F

where F: Fn(&I) -> R + Send + 'static, R: IntoResult<Option<T>>, I: Display,

impl<F, R, I, T> DefaultFn<ForKey, I, T> for F

where F: Fn(&Key<I>) -> R + Send + 'static, R: IntoResult<Option<T>>, I: Display,

impl<F, R, I, T> DefaultFn<ForScope, I, T> for F

where F: Fn(&mut Scope<I>) -> R + Send + 'static, R: IntoResult<Option<T>>, I: Display,

impl<F, R, I, T> DefaultFn<ForValue, I, T> for F

where F: Fn() -> R + Send + 'static, R: IntoResult<Option<T>>, I: Display,