ApproxEq

The ApproxEq trait handily provides a way to define approximate relations between types and comes with already-declared arbitrary implementations for primitive number types!

Easily define implementations for your own types: ```rust use approxeq::ApproxEq;

enum BookFormat { Paperback, Hardback, Ebook, }

struct Book { isbn: i32, format: BookFormat, }

impl ApproxEq for Book { // Two books are approximately equal when their respective ISBNs parity matches fn aeq(&self, &other: Self) -> bool { self.isbn % 2 == other.isbn %2 } }

fn main() { let b1 = Book { isbn: 3, format: Paperback } let b2 = Book { isbn: 5, format: Hardback } let b3 = Book { isbn: 10, format: Ebook }

assert!(b1.aeq(&b2));
assert!(b1.nae(&b3));

} ```

Contributing

Any and all PRs are welcome.

Acknowledgement

The ApproxEq crate is what you might call a joke.

Much of the documentation is an adaptation of rust-lang's std::cmp::PartialEq trait documentation.