[rustc.git] / vendor / countme / README.md

A library to quickly get the live/total/max counts of allocated instances.

```rust
#[derive(Default)]
struct Widget {
  _c: countme::Count<Self>,
  ...
}

let w1 = Widget::default();
let w2 = Widget::default();
let w3 = Widget::default();
drop(w1);

let counts = countme::get::<Widget>();
assert_eq!(counts.live, 2);
assert_eq!(counts.max_live, 3);
assert_eq!(counts.total, 3);

eprintln!("{}", countme::get_all());
```
Commit	Line	Data
064997fb FG	1	A library to quickly get the live/total/max counts of allocated instances.
	2
	3	```rust
	4	#[derive(Default)]
	5	struct Widget {
	6	_c: countme::Count<Self>,
	7	...
	8	}
	9
	10	let w1 = Widget::default();
	11	let w2 = Widget::default();
	12	let w3 = Widget::default();
	13	drop(w1);
	14
	15	let counts = countme::get::<Widget>();
	16	assert_eq!(counts.live, 2);
	17	assert_eq!(counts.max_live, 3);
	18	assert_eq!(counts.total, 3);
	19
	20	eprintln!("{}", countme::get_all());
	21	```