Trait polars_core::chunked_array::ops::IsFirst [−][src]
pub trait IsFirst<T: PolarsDataType> {
fn is_first(&self) -> Result<BooleanChunked> { ... }
}This is supported on crate feature
is_first only.Expand description
Mask the first unique values as true
Provided methods
fn is_first(&self) -> Result<BooleanChunked>
Implementors
impl IsFirst<CategoricalType> for CategoricalChunked
This is supported on crate feature
dtype-categorical only.