withExtendedLifetime

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

Evaluate f(x) and return its result, ensuring that x is not destroyed before f returns.

Declaration

  • func withExtendedLifetime<T, Result>(x: T, @noescape _ f: T throws -> Result) rethrows -> Result
func withExtendedLifetime<T, Result>(_: T, _: () throws -> Result)

Evaluate f() and return its result, ensuring that x is not destroyed before f returns.

Declaration

  • func withExtendedLifetime<T, Result>(x: T, @noescape _ f: () throws -> Result) rethrows -> Result