clone

The Clone trait provides the ability to duplicate instances of types that cannot be 'implicitly copied'.In Cairo, some simple types are "implicitly copyable": when you assign them or pass them as arguments, the receiver will get a copy, leaving the original value in place. These types do not require allocation to copy, and are not at risk of accessing un-allocated memory, so the compiler considers them cheap and safe to copy. For other types, copies must be made explicitly, by convention implementing the Clone trait and calling the Clone::clone method. # Examples

let arr = array![1, 2, 3];
let cloned_arr = arr.clone();
assert!(arr == cloned_arr);

You can use the #[derive(Clone)] attribute to automatically generate the implementation for your type:

[derive(Clone, Drop)]
struct Sheep {
   name: ByteArray,
   age: u8,
}

fn main() {
   let dolly = Sheep {
       name: "Dolly",
       age: 6,
   };

   let cloned_sheep = dolly.clone();  // Famous cloned sheep!
}

Fully qualified path: core::clone

Traits