Struct ChildKey 

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

A stable identity for a list child, so a container’s reconciliation can match a child to its live widget by key across reorders/inserts instead of by position — the difference between “the third row’s widget” and “row #42’s widget” when the list is shuffled.

Built from any Hash value (an item id, a string name, an index) via the From impls below and keyed; the hashed u64 is what the reconciler compares. Two children in the same list must not collide — a duplicate key is a debug_assert tripwire that falls back to positional reconciliation (see authoring::rebuild_children).

Implementations

impl ChildKey

pub fn new(value: impl Hash) -> Self

Hash any Hash value into a ChildKey. Backs the From impls and keyed’s impl Into<ChildKey> argument.

Trait Implementations

impl Clone for ChildKey

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for ChildKey

impl Debug for ChildKey

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

Formats the value using the given formatter.

impl Eq for ChildKey

impl From<&str> for ChildKey

fn from(value: &str) -> Self

Converts to this type from the input type.

impl From<String> for ChildKey

fn from(value: String) -> Self

Converts to this type from the input type.

impl From<char> for ChildKey

fn from(value: char) -> Self

Converts to this type from the input type.

impl From<i8> for ChildKey

fn from(value: i8) -> Self

Converts to this type from the input type.

impl From<i16> for ChildKey

fn from(value: i16) -> Self

Converts to this type from the input type.

impl From<i32> for ChildKey

fn from(value: i32) -> Self

Converts to this type from the input type.

impl From<i64> for ChildKey

fn from(value: i64) -> Self

Converts to this type from the input type.

impl From<isize> for ChildKey

fn from(value: isize) -> Self

Converts to this type from the input type.

impl From<u8> for ChildKey

fn from(value: u8) -> Self

Converts to this type from the input type.

impl From<u16> for ChildKey

fn from(value: u16) -> Self

Converts to this type from the input type.

impl From<u32> for ChildKey

fn from(value: u32) -> Self

Converts to this type from the input type.

impl From<u64> for ChildKey

fn from(value: u64) -> Self

Converts to this type from the input type.

impl From<usize> for ChildKey

fn from(value: usize) -> Self

Converts to this type from the input type.

impl Hash for ChildKey

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for ChildKey

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for ChildKey