"copy_annotation" is a annotation based code generation package for Flutter that generates a copyWith method with extension functions for immutable classes. Work together with copy_annotation_gen to generate code.

Usage

dependencies:
  copy_annotation: ^latest_version

Then, you need to add the following dependencies for code generation:

dev_dependencies:
  build_runner: ^latest_version
  copy_annotation_gen: ^latest_version

Example

@copy
class Employee {
    final int id;
    final String name;

    Employee({required this.id,required this.name})

}


final emp1 = Employee(id:1,name:"John");
final emp2 = emp1.copy(id:2,name:"Mina");