Understanding the null conditional operator

Asked Jan 02 '20 at 21:45

Active Jan 02 '20 at 21:48

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I am reading this article and it has this example

int? length = people?.Length; // null if people is null

My question is if the first question mark after the int a typo ? If not what is the purpose of introducing a ? after an int. I understand why its introduced after people. The reason for that is if people is null then it will return a null. Can someone explain the purpose of the ?

edited Jan 02 '20 at 21:46

asked Jan 02 '20 at 21:45

MistyD

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`int?` is equivalent to `Nullable`. – Jan 02 '20 at 21:46
That turns `int` into a nullable int. Otherwise you can't assign an int to null. – Ron Beyer Jan 02 '20 at 21:46
@Amy can you put that down as anwser – MistyD Jan 02 '20 at 21:47
@MistyD No, your question is a duplicate of the question indicated above your question. – Jan 02 '20 at 21:47

Understanding the null conditional operator

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