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janosorcsik/DateTimeCollisionCheck.md

Last active November 20, 2020 20:30
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DateTime collision check
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DateTimeCollisionCheck.md

Not nullable overlap

(x.StartDate <= y.EndDate && x.EndDate >= y.StartDate)

Nullable overlap

(x.StartDate ?? y.EndDate <= y.EndDate ?? x.StartDate) && (x.EndDate ?? y.StartDate >= y.StartDate ?? x.EndDate)
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