num-derive 0.4.2

Numeric syntax extensions
Documentation 
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#![no_implicit_prelude]

use ::num_derive::*;

#[derive(FromPrimitive, ToPrimitive)]
enum Color {
    Red,
    Blue,
    Green,
}

#[derive(FromPrimitive, ToPrimitive, NumCast, PartialEq, Zero, One, NumOps, Num)]
struct NewI32(i32);