polars-core 0.26.1

Core of the Polars DataFrame library
Documentation 
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use super::*;

pub struct BooleanChunkedBuilder {
    pub(crate) array_builder: MutableBooleanArray,
    field: Field,
}

impl ChunkedBuilder<bool, BooleanType> for BooleanChunkedBuilder {
    /// Appends a value of type `T` into the builder
    #[inline]
    fn append_value(&mut self, v: bool) {
        self.array_builder.push(Some(v));
    }

    /// Appends a null slot into the builder
    #[inline]
    fn append_null(&mut self) {
        self.array_builder.push(None);
    }

    fn finish(mut self) -> BooleanChunked {
        let arr = self.array_builder.as_box();
        let length = arr.len() as IdxSize;

        ChunkedArray {
            field: Arc::new(self.field),
            chunks: vec![arr],
            phantom: PhantomData,
            bit_settings: Default::default(),
            length,
        }
    }

    fn shrink_to_fit(&mut self) {
        self.array_builder.shrink_to_fit()
    }
}

impl BooleanChunkedBuilder {
    pub fn new(name: &str, capacity: usize) -> Self {
        BooleanChunkedBuilder {
            array_builder: MutableBooleanArray::with_capacity(capacity),
            field: Field::new(name, DataType::Boolean),
        }
    }
}