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If a parameter isn't used, what should I pass? - The Old New Thing (devblogs.microsoft.com)

submitted 8 months ago by SmartmanApps@programming.dev to c/programming@programming.dev

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[–] aberrate_junior_beatnik@midwest.social 3 points 8 months ago

Obviously taken to an extreme it's bad, but I think it's fine to have a function that can do one thing two or more different ways and ignore a certain parameter if one of the ways doesn't need it. I've done some programming against the Win32 API and this is what jumped to mind for me, and I think it's the typical case here. If I were designing from scratch I might split it into n functions that do it one way, but it's such a small difference I wouldn't fret over it. And of course making a change to the Windows API is an undertaking, probably not worth it in most cases.