Struct Questions 

pub struct Questions(/* private fields */);

Ordered map of question name → question. Answers come back under the same names.

Implementations

impl Questions

pub fn new() -> Self

An empty set.

pub fn with( self, name: impl Into<String>, question: impl Into<Question>, ) -> Self

Add (or replace) a question, builder-style.

pub fn insert( &mut self, name: impl Into<String>, question: impl Into<Question>, ) -> Option<Question>

Add a question, or replace the one of the same name (keeping its position). Returns the question it replaced, as HashMap::insert does.

pub fn get(&self, name: &str) -> Option<&Question>

The question named name.

pub fn len(&self) -> usize

Number of questions.

pub fn is_empty(&self) -> bool

Whether there are no questions.

pub fn iter(&self) -> impl Iterator<Item = (&str, &Question)>

Iterate in insertion order.

Trait Implementations

impl Clone for Questions

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Questions

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

Formats the value using the given formatter.

impl Default for Questions

fn default() -> Self

Returns the “default value” for a type.

impl<K: Into<String>, Q: Into<Question>> Extend<(K, Q)> for Questions

fn extend<T: IntoIterator<Item = (K, Q)>>(&mut self, iter: T)

Add (or replace) each question, as Questions::insert does.

fn extend_one(&mut self, item: T)

🔬This is a nightly-only experimental API. (extend_one)

Extends a collection with exactly one element.

fn extend_reserve(&mut self, additional: usize)

🔬This is a nightly-only experimental API. (extend_one)

Reserves capacity in a collection for the given number of additional elements.

impl<K: Into<String>, Q: Into<Question>, const N: usize> From<[(K, Q); N]> for Questions

fn from(arr: [(K, Q); N]) -> Self

Converts to this type from the input type.

impl<K: Into<String>, Q: Into<Question>> FromIterator<(K, Q)> for Questions

fn from_iter<T: IntoIterator<Item = (K, Q)>>(iter: T) -> Self

Creates a value from an iterator.

impl IntoIterator for Questions

Name and question, in insertion order.

type Item = (String, Question)

The type of the elements being iterated over.

type IntoIter = IntoIter<String, Question>

Which kind of iterator are we turning this into?

fn into_iter(self) -> Self::IntoIter

Creates an iterator from a value.

impl<'a> IntoIterator for &'a Questions

The same items as Questions::iter.

type Item = (&'a str, &'a Question)

The type of the elements being iterated over.

type IntoIter = Map<Iter<'a, String, Question>, fn((&'a String, &'a Question)) -> (&'a str, &'a Question)>

Which kind of iterator are we turning this into?

fn into_iter(self) -> Self::IntoIter

Creates an iterator from a value.

impl PartialEq for Questions

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for Questions

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 Questions