This might increase performance, but I'm pretty sure it's mostly there for safet... | Hacker News

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		AlexanderDhoore on June 2, 2014 \| parent \| context \| favorite \| on: The Swift Programming Language This might increase performance, but I'm pretty sure it's mostly there for safety. It forces the programmer to check for nil. It's like Haskell's "maybe" type.

cdmckay on June 2, 2014 [–]

Or Scala's Option or Java 8's new Optional (http://docs.oracle.com/javase/8/docs/api/java/util/Optional....)

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