Trying Out Generics in Go

Re:Trying Out Generics in Go by 1_player on Thursday December 16, 2021 @04:12PM (#29583991)

I don't understand your example, `isSet` is always true and can never be false. Missed something?

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Re:Trying Out Generics in Go by gnulinux on Thursday December 16, 2021 @09:02PM (#29586841)

It works because it's false when uninitialized (as default value). So if not initialized it represents Nothing value. When it is initialized it's Just T.

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Re:Trying Out Generics in Go by hmmdar on Thursday December 16, 2021 @04:51PM (#29584465)

The only time `IsSet` would be false is when `NewOption` was not used to initialize the value.

e.g.

  var o Option[int32]

or could have `None` helper

  func None[T any]() Option[T] { return Option[T]{} }

  o := None[int32]()

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