disjoint_impls 1.3.6

Support for mutually disjoint impls
Documentation 
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use disjoint_impls::disjoint_impls;

pub trait Dispatch1 {
    type Group;
}
pub trait Dispatch2 {
    type Group;
}

pub enum GroupA {}
pub enum GroupB {}

impl Dispatch1 for String {
    type Group = GroupA;
}
impl Dispatch2 for String {
    type Group = GroupA;
}
impl<T> Dispatch1 for Vec<T> {
    type Group = GroupA;
}
impl<T> Dispatch2 for Vec<T> {
    type Group = GroupB;
}

impl Dispatch1 for i32 {
    type Group = GroupB;
}
impl Dispatch1 for u32 {
    type Group = GroupB;
}

disjoint_impls! {
    pub trait Kita {
        const NAME: &'static str;
    }

    impl<T: Dispatch1<Group = GroupA> + Dispatch2<Group = GroupA>> Kita for T {
        const NAME: &'static str = "Blanket A";
    }
    impl<T: Dispatch1<Group = GroupB>> Kita for T {
        const NAME: &'static str = "Blanket B";
    }
}

fn main() {
    assert_eq!("Blanket A", String::NAME);
    assert_eq!("Blanket B", u32::NAME);
    assert_eq!("Blanket B", i32::NAME);

    let _ = <Vec::<u32> as Kita>::NAME;
}