Lookup index in tuple #6226

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1. saschanaz commented on Dec 23, 2015

   

   Kagami Sascha Rosylight (saschanaz)

   on Dec 23, 2015

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   It seems it needs more discussion. See also #5203.
2. DanielRosenwasser commented on Dec 23, 2015

   

   Daniel Rosenwasser (DanielRosenwasser)

   on Dec 23, 2015

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   This is because a tuple of length n is an anonymous type that has properties 0, ... n - 1, and which effectively extends an array of the union of all element types. Since it's a subtype of Array, it gets an index signature, whose output type is the union of all element types.
3. Daniel Rosenwasser (DanielRosenwasser)

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   DuplicateAn existing issue was already createdAn existing issue was already created

   on Dec 23, 2015
4. Daniel Rosenwasser (DanielRosenwasser)

   closed this as completedon Dec 23, 2015
5. Daniel Rosenwasser (DanielRosenwasser)

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   QuestionAn issue which isn't directly actionable in codeAn issue which isn't directly actionable in code

   on Dec 23, 2015
6. microsoft

   locked and limited conversation to collaborators on Jun 19, 2018