Struct Binding 

pub struct Binding { /* private fields */ }

A variable binding represents a mapping from variable names to values

Implementations

impl Binding

pub fn new() -> Self

Create empty binding

pub fn with_parent(parent: Binding) -> Self

Create binding with parent scope

pub fn bind(&mut self, var: &str, value: BoundValue)

Bind a variable

pub fn get(&self, var: &str) -> Option<&BoundValue>

Get a binding

pub fn contains(&self, var: &str) -> bool

Check if variable is bound

pub fn merge(&self, other: &Binding) -> Option<Binding>

Merge with another binding (for join)

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

Get all variable names

Trait Implementations

impl Clone for Binding

fn clone(&self) -> Binding

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Binding

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

Formats the value using the given formatter.

impl Default for Binding

fn default() -> Binding

Returns the “default value” for a type.