[swift-evolution] Shorthand unwrap proposal

[James Campbell]

I was wondering if people would be open to adding an unwrap method to the
Optional type,  I already have a method like this which shortens code for
me.

So this:

let myReallyLongOptionalName: String? = "Hey"

if let string = myReallyLongOptionalName {
  doSomethingWith(string)
}

Could become"

let myReallyLongOptionalName: String? = "Hey"

myReallyLongOptionalName.unwrap {
  doSomethingWith($0)
}

The block would only be fired if myReallyLongOptionalName has a value.

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