Method new

arrow-buffer/src/buffer/scalar.rs:89–94

Create a new [`ScalarBuffer`] from a [`Buffer`], and an `offset` and `length` in units of `T` # Panics This method will panic if `offset` or `len` would result in overflow `buffer` is not aligned to a multiple of `std::mem::align_of:: ` `bytes` is not large enough for the requested slice

(buffer: Buffer, offset: usize, len: usize)

    /// * `buffer` is not aligned to a multiple of `std::mem::align_of::<T>`
    /// * `bytes` is not large enough for the requested slice
    pub fn new(buffer: Buffer, offset: usize, len: usize) -> Self {
        let size = std::mem::size_of::<T>();
        let byte_offset = offset.checked_mul(size).expect("offset overflow");
        let byte_len = len.checked_mul(size).expect("length overflow");
        buffer.slice_with_length(byte_offset, byte_len).into()
    }

    /// Unsafe function to create a new [`ScalarBuffer`] from a [`Buffer`].
    /// Only use for testing purpose.