null-safety Examples and Free Source Code

How to write a generic function that returns nullable only when it gets a nullable in Dart...

dart generics null-safety

How to fix "Cannot run with sound null safety" error in Flutter?...

flutter dart android-studio dependencies null-safety

type 'Null' is not a subtype of type 'num' of 'other'...

flutter dart sockets android-contentprovider null-safety

Handling Null Safety Error When Accessing 'state' in Flutter Riverpod...

flutter dart riverpod null-safety

Why im getting this error Warning: Operand of null-aware operation '??' has type 'String...

flutter dart null dart-null-safety null-safety

how to migrate flutter mid-level existing project null safety?...

flutter dart null-safety

Method 'showBottomSheet' cannot be called on 'ScaffoldState?' because it is potentia...

flutter flutter-layout dart-null-safety null-safety

Even though I used late for filed in flutter, a null safety error is occurring...

database flutter null-safety

type 'String' is not a subtype of type 'double' in type cast flutter...

flutter rest dart null-safety

Why do I get this error: _CastError (Null check operator used on a null value)...

flutter if-statement casting nullable null-safety

What has the difference between declaring a variable with var and int do with the Null Safety?...

dart null-safety

Flutter error - Invalid argument(s): No host specified in URI nullapi/auth/login/...

android ios flutter dart-null-safety null-safety

The following _CastError was thrown building Builder: Null check operator used on a null value...

flutter dart widget dart-null-safety null-safety

How to make a generic functions in List<T> to get a Non-Optional type in Dart - Null Safety...

flutter dart generics extension-methods null-safety

Flutter/Dart - Difference between obj!.property and obj?.property...

dart dart-null-safety null-safety

"The argument type 'String?' can't be assigned to the parameter type 'String&#3...

string dart dart-null-safety null-safety

Stateless widget to Stateful widget convert Dart Flutter...

flutter dart dart-null-safety null-safety

type 'Null' is not a subtype of type 'String' flutter on api call...

flutter api rest dart-null-safety null-safety

Listview api white screen return problem flutter...

flutter rest dart dart-null-safety null-safety

type 'String' is not a subtype of type 'Map<String, dynamic>' flutter...

flutter api rest dart-null-safety null-safety

error: Non-nullable instance field 'reverseMap' must be initialized. Flutter...

flutter api rest dart-null-safety null-safety

NoSuchMethodError: Class 'String' has no instance method 'toDouble'. flutter...

flutter api rest dart-null-safety null-safety

Class '_InternalLinkedHashMap<String, dynamic>' has no instance getter 'name'....

flutter api rest dart-null-safety null-safety

Class '_InternalLinkedHashMap<String, dynamic>' has no instance getter 'code' ...

flutter api dart-null-safety null-safety

Null safety error on model file from quicktype model...

flutter dart-null-safety null-safety

3 errors in make components in flutter...

flutter dart null-safety

Error related to The argument type 'Object' can't be assigned to the parameter type &#39...

flutter dart dart-null-safety null-safety

How best to convert old Dart code that triggers "The non-nullable variable must be assigned&quo...

dart dart-null-safety null-safety

Is there a way in PHP to use null coalesing/nullsafe operators to default to not set any value?...

php null-coalescing-operator null-safety

The body might complete normally, causing 'null' to be returned, but the return type, 'F...

flutter dart flutter-dependencies dart-null-safety null-safety