Struct DependantMeasure 

pub struct DependantMeasure {
    pub name: String,
    pub calculator: Box<dyn Fn(&BTreeMap<String, String>) -> Result<Expr, PolarsError> + Sync + Send>,
    pub depends_upon: Vec<(String, String)>,
}

Dependant Measure cannot be computed directly. Instead it is broken down into it’s parents parents get executed, and then used to compute the DependantMeasure.

Useful for caching.

No precomputefilter - it is inherited from parents

Fields

name: String

calculator: Box<dyn Fn(&BTreeMap<String, String>) -> Result<Expr, PolarsError> + Sync + Send>

executed within .with_columns() context

depends_upon: Vec<(String, String)>

parameters which will go into calculator Vec<(Depends Upon Measure Name, Aggregation type)> eg vec![(FXDeltaCharge, scalar), (Sensitivity, mean)]

Trait Implementations

impl Debug for DependantMeasure

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

Formats the value using the given formatter.

impl From<DependantMeasure> for Measure

fn from(item: DependantMeasure) -> Measure

Converts to this type from the input type.