Solution 3: Using Fallback Operator : Here, “str” is null, and we set the fallback operator with fallback value in case of “str” is null. You need to do this before using it on the code. You can use this method to handle Null values to escape the “Null check operator used on a null value” error in Flutter or Dart.
Read moreWhat is a null check operator?
The nullish coalescing operator ( ?? ) is a logical operator that returns its right-hand side operand when its left-hand side operand is null or undefined , and otherwise returns its left-hand side operand .
Read moreHow do I ignore null in check Flutter?
You can do this in two ways:
Read moreHow can you tell if an object is empty Dart?
“dart empty object” Code Answer
Read moreWHAT IS NULL check operator in flutter?
Null-aware operators in dart allow you to make computations based on whether or not a value is null . It’s shorthand for longer expressions. A null-aware operator is a nice tool for making nullable types usable in Dart instead of throwing an error.
Read moreHow do you check if a null is empty in flutter?
We can check a string is empty or not by the String Property isEmpty . If the string is empty then it returns True if the string is not empty then it returns False. Return : True or False.9 Ağu 2021
Read moreHow do you know if its null or empty?
You can use the IsNullOrWhiteSpace method to test whether a string is null , its value is String. Empty, or it consists only of white-space characters.
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