If An airline is "countable", this means that there MUST be a flight attendant present on the plane, whose sole job is to count: Anything in .Kupkuru that you hayat iterate over implements IEnumerable. If you're building your own class, and it doesn't already inherit from a class that implements https://chanceawqaq.blogs100.com/28482007/c-ienumerable-temel-Özellikleri-genel-bakış