#[macro_use] extern crate custom_derive;
#[macro_use] extern crate enum_derive;

custom_derive! {
    #[derive(Debug, PartialEq, Eq,
        IterVariants(CandyVariants), IterVariantNames(CandyVariantNames))]
    pub enum Candy { Musk, FruitRock, BoPeeps, LemonSherbert }
}

let vars: CandyVariants = Candy::iter_variants();
let names: CandyVariantNames = Candy::iter_variant_names();
assert_eq!(&*vars.zip(names).collect::<Vec<_>>(), &[
    (Candy::Musk, "Musk"),
    (Candy::FruitRock, "FruitRock"),
    (Candy::BoPeeps, "BoPeeps"),
    (Candy::LemonSherbert, "LemonSherbert"),
]);