to_phantom

Easily convert Generics to PhantomData in your proc macros.

This is useful for when creating custom types in a proc macro that use the generics from some other type. The PhantomData allows those generics to exist on the type without needing dedicated fields using them.

```rust use to_phantom::ToPhantom;

fn createhelper(input: DeriveInput) -> TokenStream { let generics = input.generics(); let phantom = generics.tophantom();

quote! {
    pub struct MyHelperStruct #generics {
        phantom: #phantom,
    }
}

} ```