osmgraphing 0.12.0

Playing around with graphs created via parsing OpenStreetMap data
Documentation 
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use super::{
    distance::Kilometers,
    time::{Minutes, Seconds},
};
use std::{
    fmt,
    fmt::Display,
    ops::{Add, AddAssign, Deref, DerefMut, Mul, Sub, SubAssign},
};

#[derive(Debug, Default, Clone, Copy, PartialOrd, PartialEq)]
pub struct KilometersPerHour(pub f64);

impl KilometersPerHour {
    pub fn new(kmph: f64) -> KilometersPerHour {
        KilometersPerHour(kmph)
    }
}

impl Display for KilometersPerHour {
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        write!(f, "{} km/h", self.0)
    }
}

impl Deref for KilometersPerHour {
    type Target = f64;

    fn deref(&self) -> &f64 {
        &self.0
    }
}

impl DerefMut for KilometersPerHour {
    fn deref_mut(&mut self) -> &mut f64 {
        &mut self.0
    }
}

impl Add<KilometersPerHour> for KilometersPerHour {
    type Output = KilometersPerHour;

    fn add(self, other: KilometersPerHour) -> KilometersPerHour {
        KilometersPerHour(self.0 + other.0)
    }
}

impl AddAssign<KilometersPerHour> for KilometersPerHour {
    fn add_assign(&mut self, other: KilometersPerHour) {
        self.0 += other.0;
    }
}

impl Sub<KilometersPerHour> for KilometersPerHour {
    type Output = KilometersPerHour;

    fn sub(self, other: KilometersPerHour) -> KilometersPerHour {
        KilometersPerHour(self.0 - other.0)
    }
}

impl SubAssign<KilometersPerHour> for KilometersPerHour {
    fn sub_assign(&mut self, other: KilometersPerHour) {
        self.0 -= other.0;
    }
}

/// s = v * t
impl Mul<Minutes> for KilometersPerHour {
    type Output = Kilometers;

    fn mul(self, duration: Minutes) -> Kilometers {
        Kilometers(self.0 * (*duration) / 60.0)
    }
}

/// s = v * t
impl Mul<Seconds> for KilometersPerHour {
    type Output = Kilometers;

    fn mul(self, duration: Seconds) -> Kilometers {
        Kilometers(self.0 * (*duration) / 3_600.0)
    }
}