polite 0.1.3

rusqlite × Polars bridge library
Documentation 
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use std::ops::{Deref, DerefMut};

pub struct DummyBox<T>(pub T);

impl<T> Deref for DummyBox<T> {
    type Target = T;

    fn deref(&self) -> &Self::Target {
        &self.0
    }
}

impl<T> DerefMut for DummyBox<T> {
    fn deref_mut(&mut self) -> &mut Self::Target {
        &mut self.0
    }
}

// #[cfg(feature = "dst_arrow")]
pub fn decimal_to_i128(mut v: rust_decimal::Decimal, scale: u32) -> anyhow::Result<i128> {
    v.rescale(scale);

    let v_scale = v.scale();
    if v_scale != scale as u32 {
        return Err(anyhow::anyhow!(
            "decimal scale is not equal to expected scale, got: {} expected: {}",
            v_scale,
            scale
        ));
    }

    Ok(v.mantissa())
}