... this "MaybeBackup" is a thing we could discuss at its own. How should a backup be done and named? a) backup to *.bak b) use versioning - e.g. *.bak_01, *.bak_02 b.1) with max versions c) use timestamping - e.g. *.bak_20050101 c.1) but not more than 20 backups
Just an example. What I did was give the WhimFile instance methods to cover these cases so that extending classes could implement their own policy. I didn't intend to clutter my example with these issues! I should be more careful.
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