Struct polars_core::chunked_array::builder::BinViewChunkedBuilder

pub struct BinViewChunkedBuilder<T: ViewType + ?Sized> { /* private fields */ }

Implementations

impl<T: ViewType + ?Sized> BinViewChunkedBuilder<T>

pub fn new(name: &str, capacity: usize) -> Self

Create a new StringChunkedBuilder

Arguments

• capacity - Number of string elements in the final array.
• bytes_capacity - Number of bytes needed to store the string values.

pub fn append_value<S: AsRef<T>>(&mut self, v: S)

Appends a value of type T into the builder

pub fn append_null(&mut self)

Appends a null slot into the builder

pub fn append_option<S: AsRef<T>>(&mut self, opt: Option<S>)

impl BinViewChunkedBuilder<str>

pub fn finish(self) -> StringChunked

impl BinViewChunkedBuilder<[u8]>

pub fn finish(self) -> BinaryChunked

Trait Implementations

impl<T: ViewType + ?Sized> Clone for BinViewChunkedBuilder<T>

fn clone(&self) -> Self

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.