Derive Macro TryClone 

#[derive(TryClone)]
{
    // Attributes available to this derive:
    #[try_clone]
}

Derive to implement the TryClone trait.

Examples

Basic usage example:

use rune::alloc::String;
use rune::alloc::clone::TryClone;

// String type implements TryClone
let s = String::new();
// ... so we can clone it
let copy = s.try_clone()?;

To easily implement the TryClone trait, you can also use #[derive(TryClone)]. Example:

use rune::alloc::clone::TryClone;

// we add the TryClone trait to Morpheus struct
#[derive(TryClone)]
struct Morpheus {
   blue_pill: f32,
   red_pill: i64,
}

let f = Morpheus { blue_pill: 0.0, red_pill: 0 };
// and now we can clone it!
let copy = f.try_clone()?;

Attributes

try_clone(with = <path>)

Specify a custom method when cloning a field.

use rune::alloc::clone::TryClone;

#[derive(Debug, TryClone)]
#[non_exhaustive]
pub struct Struct {
    #[try_clone(with = String::clone)]
    string: String,
}

try_clone(try_with = <path>)

Specify a custom fallible method when cloning a field.

use rune::alloc::clone::TryClone;

#[derive(Debug, TryClone)]
#[non_exhaustive]
pub struct Struct {
    #[try_clone(try_with = rune::alloc::String::try_clone)]
    string: rune::alloc::String,
}

try_clone(copy)

Specify that a field is Copy.

use rune::alloc::prelude::*;

#[derive(Debug, TryClone)]
#[non_exhaustive]
pub struct Struct {
    #[try_clone(copy)]
    number: u32,
}