linkedliststack not longer requires T to be comparable#288
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has all methods except `Contains`, `IndexOf`, and `Sort` so `T` no longer has to be a comparable. Then I changed `linkedliststack` to be based on `SimpleList` instead of `List` so it no longer requires `T` to be a comparable.
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I had a use case for a stack with a type that's not comparable. I noticed that none of the methods on
linkedliststack.Stackactually requiresTto be comparable. It seems the requirement stems from the fact thatlinkedliststackis based onsinglylinkedlistwhich has 3 methods (IndexOf,Contains, andSort) whichStackdoesn't use.This refactors
singlylinkedlist.Listinto asinglylinkedlist.SimpleListwhich has aT anygeneric type. And thensinglylinkedlist.ListembedsSimpleListand adds those 3 methods. ThenStackis based on aSimpleList[T any]and it no longer requires comparable.If you like the general approach here I suspect you'd want additional changes like an interface for simple lists, maybe all stacks no longer require comparable, etc. I wanted to get some early feedback to see if you're on board with this direction and, if so, where you'd want to take this.