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Posted 19 Jan 2011

Partial DateTime Object Equality

, 19 Jan 2011 CPOL
Determine if specified date/time properrties are equal


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9 Oct 2011
Luc Pattyn
I don't mind multiple exits in such a simple method, hence I'd write:public static bool Equals(this DateTime now, DateTime then, DatePartFlags flags) { if ((flags & DatePartFlags.Ticks) != 0 && now.Ticks != then.Ticks) return false; ... if ((flags & DatePartFlags.Month) != 0...
15 Mar 2012
Andreas Gieriet
This is an alternative for "Partial DateTime Object Equality"
6 Feb 2015
John Simmons / outlaw programmer
This is an alternative for "Partial DateTime Object Equality"
6 Feb 2011
If you use the logic from your FlagIsSet function, you can remove half of your tests: DatePartFlags equalFlags = DatePartFlags.Ticks; equalFlags |= (now.Year == then.Year) ? DatePartFlags.Year : 0; equalFlags |= (now.Month == then.Month) ? DatePartFlags.Month : 0; ...


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About the Author

John Simmons / outlaw programmer
Software Developer (Senior) Paddedwall Software
United States United States
I've been paid as a programmer since 1982 with experience in Pascal, and C++ (both self-taught), and began writing Windows programs in 1991 using Visual C++ and MFC. In the 2nd half of 2007, I started writing C# Windows Forms and ASP.Net applications, and have since done WPF, Silverlight, WCF, web services, and Windows services.

My weakest point is that my moments of clarity are too brief to hold a meaningful conversation that requires more than 30 seconds to complete. Thankfully, grunts of agreement are all that is required to conduct most discussions without committing to any particular belief system.

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