2022-02-27 20:08:52 +01:00
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int thisCannotBeNull = 4;
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//thisCannotBeNull = null; // compile error!
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WriteLine(thisCannotBeNull);
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int? thisCouldBeNull = null;
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WriteLine(thisCouldBeNull);
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WriteLine(thisCouldBeNull.GetValueOrDefault());
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thisCouldBeNull = 7;
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WriteLine(thisCouldBeNull);
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WriteLine(thisCouldBeNull.GetValueOrDefault());
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// the actual type of int? is Nullable<int>
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Nullable<int> thisCouldAlsoBeNull = null;
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thisCouldAlsoBeNull = 9;
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WriteLine(thisCouldAlsoBeNull);
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// Declaring non-nullable variables and parameters
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2022-07-01 19:27:24 +02:00
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Address address = new()
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{
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Building = null,
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Street = null!, // null-forgiving operator
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City = "London",
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Region = "UK"
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};
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2022-02-27 20:08:52 +01:00
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WriteLine(address.Building?.Length);
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WriteLine(address.Street.Length);
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