Struct ColumnBuilder 

pub struct ColumnBuilder<R: Record + ColAt<I>, const I: usize>
where
    <R as ColAt<I>>::Native: ArrowBinding,
{ /* private fields */ }

A typed column builder for column I of record R.

Implementations

impl<R: Record + ColAt<I>, const I: usize> ColumnBuilder<R, I>

where <R as ColAt<I>>::Native: ArrowBinding,

pub fn with_capacity(capacity: usize) -> Self

Create a builder with capacity.

pub fn append_value(&mut self, v: &<R as ColAt<I>>::Native)

Append a value.

pub fn append_option(&mut self, v: Option<&<R as ColAt<I>>::Native>)

Append an optional value; None appends a null.

pub fn finish(self) -> <<R as ColAt<I>>::Native as ArrowBinding>::Array

Finish and produce the typed Arrow array for this column.