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[docs] Note that adding associatedtypes with defaults is allowed in library evolution #31296

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[docs] Note that adding associatedtypes with defaults is allowed in library evolution #31296

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2 changes: 2 additions & 0 deletions docs/LibraryEvolution.rst
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Expand Up @@ -577,6 +577,8 @@ There are very few safe changes to make to protocols and their members:
themselves).
- The ``@discardableResult`` and ``@warn_unqualified_access`` attributes may
be added to or removed from a function requirement.
- A new `associatedtype` requirement may be added (with the appropriate
availability), as long as it has a default implementation.
- A new non-type requirement may be added (with the appropriate availability),
as long as it has an unconstrained default implementation. If the requirement
uses ``Self`` and the protocol has no other requirements using ``Self`` and
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