claude 0.3.1

A little library to represent money.
Documentation 
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//! Implementation of `std::iter::Sum`

use ::Currency;

use std::iter::Sum;
impl Sum for Currency {
    fn sum<I>(iter: I) -> Self
        where I: Iterator<Item = Currency>
    {
        iter.fold(Currency::default(), |acc, x| acc + x)
    }
}

#[cfg(test)]
mod tests {
    use ::Currency;
    #[test]
    fn sum_up() {
        let list = vec![
            Currency{symbol: Some('£'), value: 1000},
            Currency{symbol: Some('£'), value: 0100},
            Currency{symbol: Some('£'), value: 0010},
            Currency{symbol: Some('£'), value: 0001},
        ];

        let fold = list.iter().fold(Currency::default(), |acc, x| acc + *x);
        assert_eq!(fold, Currency{ symbol: Some('£'), value:1111});

        let sum:Currency = list.into_iter().sum();
        assert_eq!(sum, Currency{ symbol: Some('£'), value:1111});
    }
}