Is it a good idea to split all those classes into categories for writing, reading and testing? For example, Database (Writing), Database(Reading), Database(Testing) and so on? Or is it a silly thing to do for some reason? Maybe ? What trade-offs have you considered ? On reason to use categories is just to break large class implementations into separate files for whatever reason: logical grouping, separate authors, short files, incremental compilation,... Don't implement the same method in multiple categories though. That least to chaos quickly because the order in which categories load is unspecified and can change. _______________________________________________
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