Struct Field 

pub struct Field<'a> { /* private fields */ }

One field of an ItemUpdate: where it sits, what it is called, what it holds, and whether this update changed it.

Implementations

impl<'a> Field<'a>

pub const fn position(&self) -> usize

The field’s 1-based position in the schema.

pub fn name(&self) -> &'a str

The field’s name, or its 1-based position in decimal if the caller declared no name for it — see ItemUpdate::field_name.

pub fn declared_name(&self) -> Option<&'a str>

The field’s name, or None if the caller declared none.

pub fn value(&self) -> FieldValue<'a>

The field’s value after this update. Null and empty stay distinct; see FieldValue.

pub fn is_changed(&self) -> bool

Whether this update carried a token for the field [docs/spec/04-notifications.md §2.5].

Trait Implementations

impl<'a> Clone for Field<'a>

fn clone(&self) -> Field<'a>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'a> Copy for Field<'a>

impl Debug for Field<'_>

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

Formats the value using the given formatter.