Easier initializer with special infix operator

ClosureConfigurable.swift

import Foundation

protocol ClosureConfigurable { }
extension ClosureConfigurable {
	typealias Configurator = (Self) throws -> Void
	
	/// Configures the receiver with a closure that is executed with `Self` as a parameter
	/// - Parameter configurator: Closure executed immediately with `Self` as a parameter
	/// - Returns: Instance after closure is applied
	@discardableResult public func setup(with configurator: Configurator) rethrows -> Self {
		try configurator(self)
		return self
	}
}

infix operator .. : AssignmentPrecedence
extension ClosureConfigurable {
	/// Typical usage:
	/// ```
	/// lazy var customView = MyCustomView() .. {
	/// 	$0.backgroundColor = .systemPurple
	/// }
	/// ```
	/// - Returns: Instance after closure is applied
	public static func .. (value: Self, closure: Configurator) rethrows -> Self {
		try value.setup(with: closure)
	}
}

extension NSObject: ClosureConfigurable { }