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Discussion on: Null Object Pattern

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Lewis Cowles

Embrace composition of multiple simpler elements rather than null-patterns. You'll still have the boilerplate of your solution, but it'll be clearer (explicit) what the actual state is.

For things like CSV or other simplified flat input, null is just fine. The format is limited so you have to workaround and null makes more sense for some columns than ''.

You wouldn't want a browser having null elements. It'd be better to have a list of children which is either empty, or has N elements sharing an interface, which conform to a rigid specification laid out in the engine. Null isn't needed. The same applies for defaults that are stored, unless auditing is a requirement.