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<div>Hi,</div><div><br></div><div>The application of the yes value in the fold_maybe/2 function was</div><div>not mentioned in the documentation.</div><div><br></div><div>library/maybe.m:</div><div>    see above.</div><div><br></div><div>--<br></div><div>diff --git a/library/maybe.m b/library/maybe.m<br>index 31d951a..7dc2361 100644<br>--- a/library/maybe.m<br>+++ b/library/maybe.m<br>@@ -80,7 +80,7 @@<br> :- func map_maybe(func(T) = U, maybe(T)) = maybe(U).<br> <br>     % fold_maybe(_, no, Acc) = Acc.<br>-    % fold_maybe(F, yes(Value), Acc0) = F(Acc0).<br>+    % fold_maybe(F, yes(Value), Acc0) = F(Value, Acc0).<br>     %<br> :- func fold_maybe(func(T, U) = U, maybe(T), U) = U.<br><br></div><div data-signatureblock="true">--<br></div>





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