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Add admonition block about MapSet opaqueness issue #15674

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sabiwara merged 1 commit into from
Jul 25, 2026
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Add admonition block about MapSet opaqueness issue #15674

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9 changes: 9 additions & 0 deletions lib/elixir/lib/map_set.ex
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Expand Up @@ -51,6 +51,15 @@ defmodule MapSet do
that they share many properties, including logarithmic time complexity. Erlang
`:sets` (version 2) are implemented on top of maps, so see the documentation
for `Map` for more information on its execution time complexity.

> #### Dialyzer opaqueness warnings {: .warning}
>
> `MapSet` internally relies on the `:sets` module which uses
> opaque types. This might cause Dialyzer to report opaqueness violations.
> These can be silenced by setting the following module attribute:
>
> @dialyzer :no_opaque

"""

@type value :: term
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