Enum Question 

pub enum Question {
    Boolean {
        instructions: String,
        criteria: Option<BooleanCriteria>,
    },
    Choice {
        instructions: String,
        criteria: BTreeMap<String, String>,
    },
    Score {
        instructions: String,
        criteria: Vec<String>,
    },
}

One typed question, as the decision API takes it.

Variants

Boolean

Answered with the probability that the statement is true.

Fields

instructions: String

The question.

criteria: Option<BooleanCriteria>

Optional definitions of the true and false cases.

Choice

Answered with one option and each option’s probability.

Fields

instructions: String

The question.

criteria: BTreeMap<String, String>

Option name to description, 1 to 255 options.

Score

Answered with a position on an ordered scale.

Fields

instructions: String

The question.

criteria: Vec<String>

Level descriptions, lowest first, 2 to 10 levels.

Implementations

impl Question

pub fn boolean(instructions: impl Into<String>) -> Self

A boolean question.

pub fn choice<K: Into<String>, D: Into<String>>( instructions: impl Into<String>, options: impl IntoIterator<Item = (K, D)>, ) -> Self

A choice among named options, each with a description.

pub fn score<L: Into<String>>( instructions: impl Into<String>, levels: impl IntoIterator<Item = L>, ) -> Self

A score on an ordered scale, lowest level first.

pub fn when( self, when_true: impl Into<String>, when_false: impl Into<String>, ) -> Self

Define what the true and false cases of a boolean question mean. A no-op on other question types.

pub fn instructions(&self) -> &str

The question’s instructions.

pub fn validate(&self) -> Result<(), String>

Check the limits the decision API enforces, so a bad question fails when it is built rather than on every call.

Trait Implementations

impl Clone for Question

fn clone(&self) -> Question

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Question

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Question

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for Question

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for Question

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for Question