This is with null safety, the question mark means that this String? can possibly be null and flutter will allow you to assign null to it . String can never be null and you’ll get an error before compiling.29 Mar 2021
Read moreWhat are two question marks flutter?
double question mark operator means “if null “.
Read moreWhat are two question marks flutter?
double question mark operator means “if null “.
Read moreHow do you use if else?
Conditional Statements
Read moreHow do you add an if else condition in flutter?
Ways to Use If Else Statement in Flutter Widget
Read moreHow do you use a conditional statement within a child attribute of a flutter widget?
How to use Conditional Statement (IF ELSE) on Child Widget in…
Read moreWhat is ternary operator in Dart?
The conditional (ternary) operator is the only Dart operator that takes three operands : a condition followed by a question mark (?), then an expression to execute if the condition is truthy followed by a colon (:), and finally the expression to execute if the condition is falsy.8 Mar 2022
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