Struct Environment 

pub struct Environment { /* private fields */ }

Implementations

impl Environment

pub fn new_enclosed_environment(outer: &Env) -> Self

pub fn get(&self, name: &str) -> Option<Rc<Object>>

pub fn set(&mut self, name: String, val: Rc<Object>)

pub fn snapshot(&self) -> Self

Capture the bindings visible at a declaration site.

Values remain shared, and so are the frames’ maps until either side writes again; a later let with the same name therefore cannot rewrite what an existing closure sees, without copying every binding up front.

pub fn visible_names(&self) -> Vec<String>

Trait Implementations

impl Clone for Environment

fn clone(&self) -> Environment

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Environment

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

Formats the value using the given formatter.

impl Default for Environment

fn default() -> Environment

Returns the “default value” for a type.

impl Eq for Environment

impl PartialEq for Environment

fn eq(&self, other: &Environment) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for Environment