FunctionSwift

    withExtendedLifetime(_:_:)

    Evaluates a closure while ensuring that the given instance is not destroyed before the closure returns.

    func withExtendedLifetime<T, Result>(_ x: T, _ body: (T) throws -> Result) rethrows -> Result

    Parameters

    x

    An instance to preserve until the execution of body is completed.

    body

    A closure to execute that depends on the lifetime of x being extended. If body has a return value, that value is also used as the return value for the withExtendedLifetime(_:_:) method.

    Returns

    The return value, if any, of the body closure parameter.