Global Functionswift 6.0.1Swift

    withExtendedLifetime(_:_:)

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

    func withExtendedLifetime<T, E, Result>(_ x: borrowing T, _ body: () throws(E) -> Result) throws(E) -> Result where E : Error, T : ~Copyable, Result : ~Copyable
    Mangled symbol

    ss20withExtendedLifetimeyq0_x_q0_yq_YKXEtq_YKs5ErrorR_Ri_zRi_0_r1_lFWhat are these?

    FNV24: [6MQ1]

    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.