Struct Changed 

pub struct Changed {
    last_value: Option<Value>,
}

Mutable step that drops values that are the same as the previous value.

The first value will always be output.

Fields

last_value: Option<Value>

Implementations

impl Changed

pub const fn new() -> Self

Trait Implementations

impl Clone for Changed

fn clone(&self) -> Changed

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Changed

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

Formats the value using the given formatter.

impl Default for Changed

fn default() -> Self

Returns the “default value” for a type.

impl From<Changed> for AnyStepMut

fn from(step: Changed) -> Self

Converts to this type from the input type.

impl StepMut for Changed

fn is_redundant(&self) -> bool

Returns true if the step is redundant.

fn transform( &mut self, _timestamp: DateTime<Utc>, _attributes: &Attributes, value: &mut Value, ) -> Outcome

Transforms a value.