use enclose::enclose;
use std::sync::Arc;

fn main() {
	let clone_data = Arc::new(0);
	let add_data = Arc::new(100);

	// I also note that any expressions can be used, but the main thing is to
	// put the @ symbol at the beginning of the variable, and not forget to assign
	// a new name to the variable using =>.
	my_enclose(
		enclose!((@*clone_data => mut clone_data: usize, @*(add_data.clone()) => add_data) || {
			// (@*clone_data => mut clone_data, @*(add_data.clone()) => add_data) ->
			// let mut clone_data = *clone_data;
			// let add_data = *(add_data.clone());

			println!("#0 {:?}", clone_data);
			clone_data += add_data;
			println!("#1 {:?}", clone_data);

			assert_eq!(clone_data, 100);
		}),
	);

	assert_eq!(*clone_data, 0);
}

#[inline]
fn my_enclose<F: FnOnce() -> R, R>(a: F) -> R {
	a()
}