Trait polars_core::chunked_array::ops::IsFirst

pub trait IsFirst<T: PolarsDataType> {
    fn is_first(&self) -> Result<BooleanChunked> { ... }
}

Available on crate feature is_first only.

Mask the first unique values as true

Provided Methods

fn is_first(&self) -> Result<BooleanChunked>

Implementors

impl IsFirst<Utf8Type> for Utf8Chunked

impl<T> IsFirst<T> for ChunkedArray<T> where
    T: PolarsNumericType,