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use std::slice;

pub struct Iter<'a, T: 'a> {
    first: &'a T,
    another: slice::Iter<'a, T>,
    is_first: bool,
}

impl<'a, T> Iter<'a, T> {
    pub fn with(first: &'a T, another: slice::Iter<'a, T>) -> Iter<'a, T> {
        Iter {
            first: first,
            another: another,
            is_first: true,
        }
    }
}


impl<'a, T> Iterator for Iter<'a, T> {
    type Item = &'a T;

    fn next(&mut self) -> Option<&'a T> {
        if self.is_first {
            self.is_first = false;
            Some(self.first)
        } else {
            self.another.next()
        }
    }
}