Struct Fields 

pub struct Fields<'a, V>(/* private fields */);

The named fields of a value that has been checked to have them.

A borrow that carries the check with it: crate::contract::object is the only thing that builds one, so a walk cannot ask an aggregate question of a value nobody established was an aggregate. That is what the concrete &serde_json::Map<String, Value> used to do, kept through the generalisation rather than traded for a bare &V.

Implementations

impl<'a, V: Source> Fields<'a, V>

pub const fn value(self) -> &'a V

The value itself, for a walk that needs it back.

pub fn get(self, name: &str) -> Option<&'a V>

One field by name.

pub fn names(self) -> Vec<&'a str>

Every field’s name, in the order the representation holds them.

Trait Implementations

impl<V> Clone for Fields<'_, V>

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<V> Copy for Fields<'_, V>

impl<'a, V: Source> IntoIterator for Fields<'a, V>

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

The type of the elements being iterated over.

type IntoIter = IntoIter<(&'a str, &'a V)>

Which kind of iterator are we turning this into?

fn into_iter(self) -> Self::IntoIter

Creates an iterator from a value.