Trait photonix::focus::composites::GetRefFifth

pub trait GetRefFifth<'a, LevelOne, LevelTwo, LevelThree, LevelFour, LevelFive> where
    LevelFour: GetRef<LevelFive> + 'a,
    LevelThree: GetRef<LevelFour> + 'a,
    LevelTwo: GetRef<LevelThree> + 'a,
    LevelOne: GetRef<LevelTwo> + 'a,
    Self: GetRef<LevelOne> + 'a, {
    fn get_ref_fifth(&'a self) -> &'a LevelFive { ... }
}

A variant of GetRef, reaching five levels deep in the data structure.

Examples

  #[derive(GetRef)]
  pub struct Employee { pub name: String, pub company: Company }

  #[derive(GetRef)]
  pub struct Company { pub name: String, pub address: Address }

  #[derive(GetRef)]
  pub struct Address { pub city: String, pub street: Street }

  #[derive(GetRef)]
  pub struct Street { pub number: StreetNumber, pub name: String }

  #[derive(GetRef)]
  pub struct StreetNumber(u16);

 let john_doe = Employee {
     name: String::from("John Doe"),
     company: Company {
         name: String::from("Acme Corporation"),
         address: Address {
                 city: String::from("London"),
                 street: Street {
                     number: StreetNumber(23),
                     name: String::from("High street"),
                 }
             },
         }
     };

 //                      Level 1   Level 2   Level 3 Level     Level 5   Parent type
 //                         |         |        |       |           |         |
 impl<'a> GetRefFifth<'a, Company, Address, Street, StreetNumber, u16> for Employee {}

 assert_eq!(23, *john_doe.get_ref_fifth());

Provided methods

fn get_ref_fifth(&'a self) -> &'a LevelFive

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Implementors

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