bevy_persistence_database 0.3.0

A persistence and database integration solution for the Bevy game engine
Documentation 
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use bevy::prelude::Resource;
use std::collections::HashSet;
use std::sync::Mutex;

#[derive(Resource, Default)]
pub struct InFlightQueries {
	hashes: Mutex<HashSet<u64>>,
}

impl InFlightQueries {
	pub fn insert_if_absent(&self, hash: u64) -> bool {
		let mut guard = self.hashes.lock().unwrap();
		if guard.contains(&hash) {
			false
		} else {
			guard.insert(hash);
			true
		}
	}

	pub fn remove(&self, hash: u64) {
		self.hashes.lock().unwrap().remove(&hash);
	}
}