pub struct IoSlice<'a>(&'a [u8]);

impl<'a> IoSlice<'a> {
    #[inline]
    pub fn new(buf: &'a [u8]) -> IoSlice<'a> {
        IoSlice(buf)
    }

    #[inline]
    pub fn as_slice(&self) -> &[u8] {
        self.0
    }
}

pub struct IoSliceMut<'a>(&'a mut [u8]);

impl<'a> IoSliceMut<'a> {
    #[inline]
    pub fn new(buf: &'a mut [u8]) -> IoSliceMut<'a> {
        IoSliceMut(buf)
    }

    #[inline]
    pub fn as_slice(&self) -> &[u8] {
        self.0
    }

    #[inline]
    pub fn as_mut_slice(&mut self) -> &mut [u8] {
        self.0
    }
}