num-t

Num<T>: Associate arbitrary types with numeric types

This crate provides the Num<Number, Type> struct, which allows you to associate an arbitrary type Type with a numeric value Number. This can be useful for creating strongly-typed numeric values, preventing mixing of different units or concepts in calculations.

Num<Number, Type> wraps a numeric type Number and uses a std::marker::PhantomData<Type> to carry the type information without adding runtime overhead.

It implements many standard traits, including:

• Clone, Copy, Default
• From<Scalar>
• PartialOrd, PartialEq, Eq
• Arithmetic operators (Add, Sub, Mul, Div, Rem, AddAssign, etc.)
• FromStr, Display
• Sum
• Traits from the num-traits crate: ToPrimitive, NumCast, Num, One, Zero, Float, Bounded, Signed, FromPrimitive.

Optional Features

• float_next_after: Implements float_next_after::NextAfter for Num when the underlying Number type also implements it.
• geo: Implements geo::GeoNum for Num when the underlying Number type also implements it.

License

This crate is licensed under either of

• Apache License, Version 2.0
• MIT license

at your option.