Function core_extensions::phantom::as_phantom

pub const fn as_phantom<T: ?Sized>(_: &T) -> PhantomData<T>

Available on crate feature phantom only.

Gets the PhantomData of the passed in type.

Example

use core_extensions::as_phantom;
 
use std::marker::PhantomData;
 
fn get_default<T: Default>(_type: PhantomData<T>) -> T {
    Default::default()
}
 
let string = String::new();
let vector = vec![0u8];
 
assert_eq!(get_default(as_phantom(&string)), "".to_string());
assert_eq!(get_default(as_phantom(&vector)), vec![]);