Macro ra_ap_stdx::impl_from

macro_rules! impl_from {
    ($($variant : ident $(($($sub_variant : ident), *)) ?), * for $enum : ident) => { ... };
}

Generates From impls for Enum E { Foo(Foo), Bar(Bar) } enums

Example

impl_from!(Struct, Union, Enum for Adt);