Global Functionswift 6.0.3Swift

    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: (borrowing T) throws(E) -> Result) throws(E) -> Result where E : Error, T : ~Copyable, Result : ~Copyable
    Mangled symbol
    ss20withExtendedLifetimeyq0_x_q0_xq_YKXEtq_YKs5ErrorR_Ri_zRi_0_r1_lF What are these?
    FNV24 hash
    4KL68

    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.