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| -rw-r--r-- | doc/manual.xhtml | 1 |
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diff --git a/doc/manual.xhtml b/doc/manual.xhtml index a734c04..d2c65c6 100644 --- a/doc/manual.xhtml +++ b/doc/manual.xhtml @@ -1673,6 +1673,7 @@ private: }; </pre> + <p>The object id type should be default-constructible.</p> <p>You may be wondering whether we also have to declare value types as persistent. We don't need to do anything special for simple value |