Struct PurpleConditionalPredicateValueDefStringNullExprRefBuilder 

pub struct PurpleConditionalPredicateValueDefStringNullExprRefBuilder { /* private fields */ }

Builder for PurpleConditionalPredicateValueDefStringNullExprRef.

Implementations

impl PurpleConditionalPredicateValueDefStringNullExprRefBuilder

pub fn test<VALUE: Into<PredicateCompositionElement>>( &mut self, value: VALUE, ) -> &mut Self

Predicate for triggering the condition

pub fn value<VALUE: Into<String>>(&mut self, value: VALUE) -> &mut Self

A constant value in visual domain (e.g., "red" / "#0099ff" / gradient definition for color, values between 0 to 1 for opacity).

pub fn expr<VALUE: Into<String>>(&mut self, value: VALUE) -> &mut Self

Vega expression (which can refer to Vega-Lite parameters).

pub fn build( &self, ) -> Result<PurpleConditionalPredicateValueDefStringNullExprRef, PurpleConditionalPredicateValueDefStringNullExprRefBuilderError>

Builds a new PurpleConditionalPredicateValueDefStringNullExprRef.

Errors

If a required field has not been initialized.

Trait Implementations

impl Clone for PurpleConditionalPredicateValueDefStringNullExprRefBuilder

fn clone(&self) -> PurpleConditionalPredicateValueDefStringNullExprRefBuilder

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Default for PurpleConditionalPredicateValueDefStringNullExprRefBuilder

fn default() -> Self

Returns the “default value” for a type.