null / nil in swift language

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Regarding equivalents:

  • NULL has no equivalent in Swift.
  • nil is also called nil in Swift
  • Nil has no equivalent in Swift
  • [NSNull null] can be accessed in Swift as NSNull()

Note: These are my guesses based on reading and play. Corrections welcome.

But nil/NULL handling in Swift is very different from Objective C. It looks designed to enforce safety and care. Read up on optionals in the manual. Generally speaking a variable can’t be NULL at all and when you need to represent the “absence of a value” you do so declaratively.

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