Flutter final

late to field means that the field will be initialized when you use it for the first time .

“final” means single-assignment : a final variable or field must have an initializer. Once assigned a value, a final variable’s value cannot be changed. final modifies variables. “const” has a meaning that’s a bit more complex and subtle in Dart.

Lazy initialization is now part of dart from the release 2.12 . Simply add late modifier to the variable declaration. late MyClass obj = MyClass(); And this object will be initialized only when it is first used.