id.rs
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id.rs
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	use std::sync::atomic::{AtomicUsize, Ordering};

	pub struct AutoIncrement {
	pub counter: AtomicUsize,
	}

	impl AutoIncrement {
	pub fn new(start: usize) -> Self { AutoIncrement { counter: AtomicUsize::new(start) } }
	pub fn next(&self) -> usize { self.counter.fetch_add(1, Ordering::SeqCst) }
	}

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