Enum DataChanges 

pub enum DataChanges<Index> {
    None,
    NoPreparedItems,
    Range(Range<Index>),
    Any,
}

Indicates whether an update to a DataClerk changes any keys or values

Variants

None

Indicates that no changes to the data set occurred.

NoPreparedItems

Indicates that changes to the data set may have occurred, but that DataClerk::update_token and DataClerk::item results are unchanged for the view_range.

Range(Range<Index>)

Indicates that tokens for the given range may require an update and/or that items for the given range have changed. DataClerk::update_token will be called for each index in the intersection of the given range with the view_range.

Any

Any indicates that changes to the data set may have occurred.

Trait Implementations

impl<Index: Clone> Clone for DataChanges<Index>

fn clone(&self) -> DataChanges<Index>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<Index: Debug> Debug for DataChanges<Index>

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

Formats the value using the given formatter.

impl<Index: PartialEq> PartialEq for DataChanges<Index>

fn eq(&self, other: &DataChanges<Index>) -> bool

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<Index: Eq> Eq for DataChanges<Index>

impl<Index> StructuralPartialEq for DataChanges<Index>