Macro typed_index_collection::impl_with_id

macro_rules! impl_with_id {
    ($ty:ty) => { ... };
}

Implement trait WithId automatically for a type.

The type must implement Default and have at least 2 fields: id and name. Both id and name will be set with the value of the input parameter id.

#[derive(Default)]
struct Animal {
  id: String,
  name: String,
  species: String,
}
impl_with_id!(Animal);
let animal = Animal::with_id("cat");
assert_eq!("cat", animal.id);
assert_eq!("cat", animal.name);
assert_eq!("", animal.species);