fn try_eq_by()

in gazebo/src/ext/iter.rs [279:302]

• 21 lines of code
• 3 McCabe index (conditional complexity)

    fn try_eq_by<O, F, E>(mut self, other: O, mut eq: F) -> Result<bool, E>
    where
        Self: Sized,
        O: IntoIterator,
        F: FnMut(Self::Item, O::Item) -> Result<bool, E>,
    {
        let mut other = other.into_iter();

        loop {
            let x = match self.next() {
                None => return Ok(other.next().is_none()),
                Some(val) => val,
            };

            let y = match other.next() {
                None => return Ok(false),
                Some(val) => val,
            };

            if !eq(x, y)? {
                return Ok(false);
            }
        }
    }