Dart's null-aware operators allow you to perform calculations based on whether or not a value is null. It's a shortened version of a longer expression. Instead of throwing an error, a null-aware operator can be used to make nullable types useful in Dart. These operators are used in fullback in such a way that you get a value rather than null at the end. Null-aware operators are used in practically every programming language to determine whether a variable's value is Null. Null is represented by the keyword null in the computer language Dart.