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ChunkAgg

polars_python::prelude

Trait ChunkAgg 

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pub trait ChunkAgg<T> {
    // Required method
    fn _sum_as_f64(&self) -> f64;

    // Provided methods
    fn sum(&self) -> Option<T> { ... }
    fn min(&self) -> Option<T> { ... }
    fn max(&self) -> Option<T> { ... }
    fn min_max(&self) -> Option<(T, T)> { ... }
    fn mean(&self) -> Option<f64> { ... }
}
Expand description

Aggregation operations.

Required Methods§

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fn _sum_as_f64(&self) -> f64

Provided Methods§

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fn sum(&self) -> Option<T>

Aggregate the sum of the ChunkedArray. Returns None if not implemented for T. If the array is empty, 0 is returned

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fn min(&self) -> Option<T>

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fn max(&self) -> Option<T>

Returns the maximum value in the array, according to the natural order. Returns None if the array is empty or only contains null values.

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fn min_max(&self) -> Option<(T, T)>

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fn mean(&self) -> Option<f64>

Returns the mean value in the array. Returns None if the array is empty or only contains null values.

Dyn Compatibility§

This trait is dyn compatible.

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

Implementors§