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@propertyWrapper public struct Preferences<Value: Codable> {
	public let key: String
	public let defaultValue: Value

	public init(key: String, defaultValue: Value) {
		self.key = key
		self.defaultValue = defaultValue
	}

	public var wrappedValue: Value {
		get { UserDefaults.standard.object(forKey: key) as? Value ?? defaultValue }
		set { UserDefaults.standard.setValue(newValue, forKey: key) }
	}
}

// roughly equivalent to
// lock.lock()
// if shouldDoThing == true {
//     shouldDoThing = false
//     print(shouldDoThing)
// }
// lock.unlock
if AtomicCompareAndSwap(shouldDoThing, expecting: true, replaceWith: false) { 
    print(shouldDoThing) // false
}

import Foundation

//FIXME: Need to expand on this code or delete it...
public protocol MVVM {
	associatedtype T
	
	var value: T { get set }
}

private mutating func filterExcessEntries() {
		while _keys.count > _limit {
			if let value = _dictionary.removeValue(forKey: _keys[0]) {
				//FIXME: Remove when Swift gets the ability to specify macOS 11 in Package.swift
				print("Removing Key/value pair (\(_keys[0]), \(value)")
				_keys.remove(at: 0)
			}
		}
	}

import Konkyo.Thread

	func testDictionaryLiteralAndSetLimit() {
		var dictionary: RollingDictionary = ["A": 1, "B": 2]
		
		XCTAssertNotNil(dictionary)
		XCTAssertEqual(dictionary["A"], 1)
		XCTAssertEqual(dictionary["B"], 2)
		
		dictionary.setLimit(1)
		XCTAssertEqual(dictionary.getKeyLimit(), 1)
		
		//
		XCTAssertNil(dictionary["A"])     // <-- FAIL HERE
		XCTAssertNotNil(dictionary["B"]) // <-- FAIL HERE
	}