Trait CrossJoinFilter 

pub trait CrossJoinFilter: Send + Sync {
    // Required method
    fn evaluate(
        &self,
        df: &DataFrame,
    ) -> Result<ChunkedArray<BooleanType>, PolarsError>;

    // Provided method
    fn apply(&self, df: DataFrame) -> Result<DataFrame, PolarsError> { ... }
}

Available on crate feature polars-ops only.

Required Methods

fn evaluate( &self, df: &DataFrame, ) -> Result<ChunkedArray<BooleanType>, PolarsError>

Evaluates the filter predicate on df, returning a boolean mask.

Provided Methods

fn apply(&self, df: DataFrame) -> Result<DataFrame, PolarsError>

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors

impl<T> CrossJoinFilter for T

where T: Fn(&DataFrame) -> Result<ChunkedArray<BooleanType>, PolarsError> + Send + Sync,