[swift-evolution] [Proposal] Scoped resources (like C# using statement)

[Kevin Ballard]

On Wed, Dec 30, 2015, at 01:33 PM, Joe Groff wrote:
> Another possibility I've thought of is defining `defer { val }` to
> guarantee that val remains alive until the defer fires on scope exit.
> That might let us leave `defer` as the one "guarantee something
> happens exactly at scope exit" language construct.

Oh that's cute. I'd probably want to say `defer { _ = val }` though, to
make it obvious that this is intentional.

-Kevin Ballard
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