Struct Choice 

pub struct Choice {
    pub addr: Address,
    pub value: ChoiceValue,
    pub logp: f64,
}

A single recorded choice made during model execution.

Each Choice represents a random variable assignment at a specific address, complete with the value chosen and its log-probability. Choices form the building blocks of execution traces.

Example:

// Choices are typically created by handlers during execution
let choice = Choice {
    addr: addr!("theta"),
    value: ChoiceValue::F64(1.5),
    logp: -0.918, // log-probability under generating distribution
};

println!("Choice at {}: {:?} (logp: {:.3})",
         choice.addr, choice.value, choice.logp);

// Extract the value with type safety
if let Some(val) = choice.value.as_f64() {
    println!("Theta value: {:.3}", val);
}

Fields

addr: Address

Address where this choice was made.

value: ChoiceValue

Value that was chosen.

logp: f64

Log-probability of this value under the generating distribution.

Trait Implementations

impl Clone for Choice

fn clone(&self) -> Choice

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Choice

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

Formats the value using the given formatter.