A typesafe, flexible, simple, and user-friendly unit system library for Rust that has good error messages.

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Learning Resources uy
Overview

uy

A typesafe, flexible, simple, and user-friendly unit system library for Rust that has good error messages.

Usage

uy not only stores the unit of a value in the typesystem, it also stores the scale within the unit's type itself.

For example, Quantity<f32, si::m> is not the same type as Quantity<f32, si::kilo<si::m>>.

To convert between types like that, call the .convert() method on Quantity.

Example

use uy::{Quantity, si};

fn how_long(
    d: Quantity<f32, si::m>,
    v: Quantity<f32, uy::Div<si::m, si::s>>
) -> Quantity<f32, si::s> {
    d / v
}
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Comments
  • Hash disregards units

    Hash disregards units

    Currently, hash is implemented like this:

    impl<T: hash::Hash, U: Unit> hash::Hash for Quantity<T, U> {
    fn hash<H: hash::Hasher>(&self, state: &mut H) {
        self.val.hash(state);
    }
}

    which disregards units (i.e. 1kg would have the same hash as 1Hz).

    opened by Indy2222 0
Owner
Lachlan Sneff
Lachlan Sneff
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