How to check two `Array` instances for identity equality in constant time?

[vanvoorden (Rick van Voorden)]

Here is a pitch. Thanks!

[Pitch][StdLib][Foundation] `Distinguishable` protocol for Quick Comparisons

Hi! Here is a pitch derived from this discussion: Distinguishable protocol and isIdentical Function for Quick Comparisons Introduction I propose a new Distinguishable protocol and isIdentical function for determining if two instances are distinguishable in constant-time. Motivation Suppose we have some code that listens to values from an AsyncSequence. Every value received from the AsyncSequence is then used to perform some work that scales linearly with the size of the Element: func doLine…