list literal gotcha and suggestion

Tim Peierls tim at
Thu Oct 1 13:05:26 PDT 2009

That would make for an awfully exciting type system.
    Paris in the
    the spring.

Quick, sentence or not?


On Thu, Oct 1, 2009 at 3:05 PM, Mark Thornton <mthornton at>wrote:

> There is another alternative: The value [1,2,3] should be both a List
> and a Set while [1, 2, 1] would be just a List. As the elements are
> compile time constants the compiler can easily check for duplicates. If
> any element appears more than once, then the result is just a List,
> otherwise it implements both List and Set.

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