Method push_unchecked

arrow-buffer/src/buffer/mutable.rs:635–641

(&mut self, item: T)

    /// Caller must ensure that the capacity()-len()>=`size_of<T>`()
    #[inline]
    pub unsafe fn push_unchecked<T: ToByteSlice>(&mut self, item: T) {
        let additional = std::mem::size_of::<T>();
        let src = item.to_byte_slice().as_ptr();
        let dst = unsafe { self.data.as_ptr().add(self.len) };
        unsafe { std::ptr::copy_nonoverlapping(src, dst, additional) };
        self.len += additional;
    }

    /// Extends the buffer by `additional` bytes equal to `0u8`, incrementing its capacity if needed.
    ///