Struct Closure 

pub struct Closure {
    pub param: Param,
    pub body: Expr,
    pub env: Env,
}

A closure — lambda + captured environment.

Stores rnix AST nodes so we can re-evaluate the body in the captured env.

The environment is Rc-wrapped so that cloning a closure (e.g., once per element in map/filter) is a refcount bump instead of a deep copy of the entire binding map.

Fields

param: Param

body: Expr

env: Env

Trait Implementations

impl Clone for Closure

fn clone(&self) -> Closure

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Closure

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

Formats the value using the given formatter.