Code inspection: Variable can be declared as non-nullable

tip

You can suppress this inspection to ignore specific issues, change its severity level to make the issues less or more noticeable, or disable it altogether.

If nullable reference types (NRT) are enabled, this inspection reports redundant nullable reference types' annotations (?) on variables whose value is determined to never be null based on the control flow analysis.

In the example below, the value of the myClass variable will never be null because it is assigned with a new instance of MyClass.

JetBrains Rider suggests removing the ? annotation on the type of the variable to improve readability and to avoid unnecessary null checks for usages of the variable.

#nullable enable
MyClass? myClass = new MyClass();

#nullable enable
MyClass? myClass = new MyClass();

For more information about NRT and how JetBrains Rider supports them, watch this webinar recording: