Mention These type from Haskell

Formkunft · Sep 21, 2024 · 673c8ec · 673c8ec
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@@ -8,5 +8,6 @@ A Swift package for a type `Delta<Element>` with three cases:
 
 Such a delta value is useful to represent an inclusive OR relation for the presence of a source and a target element.
 Either element (delta side) may be absent, but never both.
+In other languages, this type is also known as `These`.
 
 The type also offers useful properties for accessing either side’s element as optionals, initializing a `Delta` from optionals, and mapping methods returning transformed delta values.