Struct Questions 

pub struct Questions<A: Answers> { /* private fields */ }

The question set of a named set: the struct A, which derives Answers.

The type A selects the questions, so Questions takes no data. Each question is a constant, and cargo check validates it. Questions makes its questions for each request, and again to read the answers.

Examples

use system2::prelude::*;
use system2::NoulAnswer;

#[derive(Debug, Answers)]
struct Triage {
    #[system2(question = noul!("Is the ticket urgent?"))]
    urgent: NoulAnswer,
    #[system2(question = noul!("Is the customer angry?"))]
    angry: NoulAnswer,
}

// the struct is the caller's, so it can have methods
impl Triage {
    fn needs_a_call(&self) -> bool {
        self.urgent.is_likely() && self.angry.is_likely()
    }
}

const TRIAGE: Questions<Triage> = Questions::new();

let triage = TRIAGE.ask("The site is down again.").await?;
if triage.needs_a_call() { /* … */ }
let triage: Triage = Questions::new().ask("The site is down again.").await?;

Implementations

impl<A: Answers> Questions<A>

pub const fn new() -> Self

Makes the question set of A.

Trait Implementations

impl<A: Answers> Clone for Questions<A>

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<A: Answers> Debug for Questions<A>

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

Formats the value using the given formatter.

impl<A: Answers> Default for Questions<A>

fn default() -> Self

Returns the “default value” for a type.

impl<A: Answers> QuestionSet for Questions<A>

type AnswerSet = A

The answers of the set, with the shape of the set.