Trait polars::prelude::ListFromIter

pub trait ListFromIter {
    unsafe fn from_iter_primitive_trusted_len<T, P, I>(
        iter: I,
        data_type: DataType
    ) -> ListArray<i64>
    where
        T: NativeType,
        P: IntoIterator<Item = Option<T>>,
        I: IntoIterator<Item = Option<P>>,
    { ... }
    unsafe fn from_iter_bool_trusted_len<I, P>(iter: I) -> ListArray<i64>
    where
        I: IntoIterator<Item = Option<P>>,
        P: IntoIterator<Item = Option<bool>>,
    { ... }
    unsafe fn from_iter_utf8_trusted_len<I, P, Ref>(
        iter: I,
        n_elements: usize
    ) -> ListArray<i64>
    where
        I: IntoIterator<Item = Option<P>>,
        P: IntoIterator<Item = Option<Ref>>,
        Ref: AsRef<str>,
    { ... }
}

Provided Methods

unsafe fn from_iter_primitive_trusted_len<T, P, I>(
    iter: I,
    data_type: DataType
) -> ListArray<i64> where
    T: NativeType,
    P: IntoIterator<Item = Option<T>>,
    I: IntoIterator<Item = Option<P>>, 

Create a list-array from an iterator. Used in groupby agg-list

Safety

Will produce incorrect arrays if size hint is incorrect.

unsafe fn from_iter_bool_trusted_len<I, P>(iter: I) -> ListArray<i64> where
    I: IntoIterator<Item = Option<P>>,
    P: IntoIterator<Item = Option<bool>>, 

Create a list-array from an iterator. Used in groupby agg-list

Safety

Will produce incorrect arrays if size hint is incorrect.

unsafe fn from_iter_utf8_trusted_len<I, P, Ref>(
    iter: I,
    n_elements: usize
) -> ListArray<i64> where
    I: IntoIterator<Item = Option<P>>,
    P: IntoIterator<Item = Option<Ref>>,
    Ref: AsRef<str>, 

Create a list-array from an iterator. Used in groupby agg-list

Safety

Will produce incorrect arrays if size hint is incorrect.

Implementors

impl ListFromIter for ListArray<i64>