c# - Should a class that provides functionality be static or singelton? -

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i'm writing c# app, , have class dos provide functionality different class use. example class provides clock service , more. there reason make class singelton class? or static class? or maybe should not either?

if class needs keep inner state should singelton, if doesn't make static!

inner states be:

  • a file reference
  • a user preference
  • any kind of history

if merely collection of functions etc.. math, kiss (keep static)!


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