Struct EmptyActivation 

pub struct EmptyActivation;

An empty activation with no bindings.

Useful as a default or when no variables are needed.

Implementations

impl EmptyActivation

pub fn new() -> Self

Create a new empty activation.

Trait Implementations

impl Activation for EmptyActivation

fn resolve(&self, _name: &str) -> Option<Value>

Resolve a variable name to its value.

fn has(&self, _name: &str) -> bool

Check if a variable is defined (present check for has() macro).

impl Clone for EmptyActivation

fn clone(&self) -> EmptyActivation

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for EmptyActivation

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

Formats the value using the given formatter.

impl Default for EmptyActivation

fn default() -> EmptyActivation

Returns the “default value” for a type.

impl Copy for EmptyActivation