auto-tuple-traits 0.3.1

Attribute macro to implement a trait for tuples
Documentation 
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trait Test {
    type Test;

    fn test() -> Self::Test;
}

#[auto_tuple_traits::impl_for_tuples(2)]
impl Test for Tuple {
    for_tuples!( type Test = ( #( Tuple::Test ),* ); );

    fn test() -> Self::Test {
        for_tuples!( ( #( Tuple.test() ),* ) )
    }
}

fn main() {}