This Dart official video states that Dart's so-called "sound null safety" is better than Kotlin's null safety design, because it can optimise the code based on
Im trying to migrate dart null safety but I get the following error when I run dart migrate Bad state: Error: package has unmigrated dependencies. Before migra
Dart function I have the following Dart function and I am now using null safety: void calculate({int factor}) { // ... } The analyzer complains that: The pa
I have a refactored widget which has an onPressed. But whenever I try to access that function, I get this error : The argument type Function? can't be assigned
I'm trying to create a "copyWith" method for my class, and it works with most scenarios. The problem is when I try to set a nullable property to null, because m
Currently, I am working on a Flutter tutorial which was developed on previous versions. The error occurred once we updated to the latest version of Dart and Flu
I am new to flutter/dart coding, please help me solve the following: Here is my code trying to fetch data from the FireStore collection "DinnerNames" but I get
I wrote this function to save contact number, but it can't save on local storage Future _saveContact() async { Contact contact = Contact(); contact.fami
Suppose there are two models User and City @JsonSerializable() class User { int id; String name; City? city; List<Map<String, City>>
I am trying to run a dart file without null safety using the command line. The file is: sandbox.dart void main() { String a; print(a); } I then run the
I am trying to run a dart file without null safety using the command line. The file is: sandbox.dart void main() { String a; print(a); } I then run the
Hey guys I am new to Flutter and trying to build a variation selector for an eCommerce application. I am getting this error while trying to build a size variati
Wow I have a whole lot of these: Error: Method 'copyWith' cannot be called on 'TextStyle?' because it is potentially null. 'TextStyle' is from 'package:flutter