Trait ConcreteVariantObject 

pub trait ConcreteVariantObject {
    type Value: VariantValue<VariantObject = Self>;

    // Required methods
    fn is_empty(&self) -> bool;
    fn len(&self) -> usize;
    fn get(&self, key: &str) -> Option<&Self::Value>;
    fn get_key_value(&self, key: &str) -> Option<(&String, &Self::Value)>;
    fn iter(&self) -> impl Iterator<Item = (&String, &Self::Value)>;
    fn values(&self) -> impl Iterator<Item = &Self::Value>;
}

A trait for the concrete variant object type associated with a variant value.

Required Associated Types

type Value: VariantValue<VariantObject = Self>

The type of the value in the object.

Required Methods

fn is_empty(&self) -> bool

Whether the object is empty.

fn len(&self) -> usize

The length of the object, i.e., the number of key-value pairs.

fn get(&self, key: &str) -> Option<&Self::Value>

Get the value for the given key; None if the key is not present.

fn get_key_value(&self, key: &str) -> Option<(&String, &Self::Value)>

Get the key-value pair for the given key; None if the key is not present.

fn iter(&self) -> impl Iterator<Item = (&String, &Self::Value)>

An iterator over the key-value pairs in the object.

fn values(&self) -> impl Iterator<Item = &Self::Value>

An iterator over the values in the object.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementations on Foreign Types

impl ConcreteVariantObject for Map<String, Value>

Available on crate feature json only.

type Value = Value

fn is_empty(&self) -> bool

fn len(&self) -> usize

fn get(&self, key: &str) -> Option<&Self::Value>

fn get_key_value(&self, key: &str) -> Option<(&String, &Self::Value)>

fn iter(&self) -> impl Iterator<Item = (&String, &Self::Value)>

fn values(&self) -> impl Iterator<Item = &Self::Value>

impl ConcreteVariantObject for Table

Available on crate feature toml only.

type Value = Value

fn is_empty(&self) -> bool

fn len(&self) -> usize

fn get(&self, key: &str) -> Option<&Self::Value>

fn get_key_value(&self, key: &str) -> Option<(&String, &Self::Value)>

fn iter(&self) -> impl Iterator<Item = (&String, &Self::Value)>

fn values(&self) -> impl Iterator<Item = &Self::Value>

Implementors