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In Flutter/Dart their is the null safety feature. In my scenario, I have null safety ON and I am trying to get the property 'myDateTime' of my object MyDateTime . But the compiler produce the error:

The property 'myDateTime' can't be unconditionally accessed because the receiver can be 'null'.
Try making the access conditional (using '?.') or adding a null check to the target ('!').

which makes sense because the object can be null.

I tried both solution

MyDateTime!.myDateTime

and

MyDateTime?.myDateTime

and the both work fine but I don't understand the difference!! Can anyone elaborate?

Christoforos Pantazis
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1 Answers1

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MyDateTime!.myDateTime means: i know MyDateTime can never be null and it tries to access property myDateTime even if MyDateTime is null.

MyDateTime?.myDateTime means: i know MyDateTime can be null, so if it is, don't try to access property myDateTime

The first one returns an error if MyDateTime is null, the other one does not.

Arjen
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