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Dart 3 Key Features Flutter News tool kit wonderous flutter Opportunities In flutter open source 1. 2. 3. 4. 

Dart mission is to create the best programming language for building high-quality apps across any platform. Dart is approachable, any to lean, avoids unnecessary complexity, and is internally consistent. Dart 3 What are the features of dart 3 

100% Sound null safety + Key Features Dart 3 + 

In Dart 3, you will always get null safety. Null safety prevents errors that results through unintentional access of variables set to null. For example if a method expects an integer but receives null, your app causes a runtime error. With sound null safety, variables are set non nullable by default. Dart 3 100% sound null safety 

//integer var i = 25; // String var name = "Kampala"; JDJ FHFH 

var favouriteProgrammingLanguage = "Java"; var favouriteProgrammingLanguage = null; JDJ FHFH 

setProgrammingLanguage(data.favouriteLanguage); showProgramingLangs(list[1]) JDJ FHFH 

Null safety Int age = 10; Language? favouriteLanguage; //explicit setProgrammingLanguage(data.favouriteLanguage); // * 

Null safety ● c# ● Java ● Kotlin ● Dart Sound Null safety ● Dart ● Swift Sound null safety 

List getEvenNumbers(List numbers) { List evenNumbers = []; for (int number in numbers) { if (number % 2 == 0) { evenNumbers.add(number); } } return evenNumbers; } JDJ FHFH 

//same with functional arguments void setBackground(Color? color){ //... } 

//functional returns Color? chooseFavorite(){ //... } 

//generic types List favorites; 

void setBackground(Color? color){ //... } Color backgroundColor = Color(OxFFee00); setBackground(backgroundColor); JDJ FHFH 

● Safer ● Faster Why null safety 

User onboarding Account Creation / Login Content feeds and content pages Monetization Search & Settings + + + + + Key features 

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