Include class name in warning

[mlarraz]

This makes it easier to debug

[pboling]

FYI: Added this alert to the new memoist repo

[!IMPORTANT]

Recommendation

Consider using MemoWise instead, as it is maintained, fully tested, provides thread safety guarantees, and is much, much faster.

Other Alternatives

In case you need a tool with this feature set that is currently maintained, check out:

• https://github.com/makandra/memoized
• https://github.com/honzasterba/memoist
• https://github.com/AlexWayfer/alt_memery

[!TIP]
Seriously though, read the important note above.

[!WARNING]
If you must continue - be aware that this is unmaintained software.