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

[Kevin Wooten via swift-evolution]

>> 
>> 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.

What about this…

defer let val = grabOrCreateSomething() {
  return;
}

Seems natural once you learn guard.

> 
>> 
>> -Joe
>> 
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