Is there a way to clone objects in Dart?

Question

I went through a few questions about this on Stackoverflow but nothing made sense to me. What's the easiest way?

Answer 1

Check below class for reference:

class Customer {
  final String id;
  final String name;
  final String address;
  final String phoneNo;
  final String gstin;
  final String state;

Customer({
    this.id = '',
    @required this.name,
    @required this.address,
    @required this.phoneNo,
    this.gstin,
    @required this.state,
  });

  Customer copyWith({
    String name,
    String address,
    String phoneNo,
    String gstin,
    String state,
  }) {
    return Customer(
      name: name ?? this.name,
      address: address ?? this.address,
      phoneNo: phoneNo ?? this.phoneNo,
      gstin: gstin ?? this.gstin,
      state: state ?? this.state,
    );
  }

}

using copyWith constructor you can create a copy of an object.

if you don't pass any argument to copyWith constructor it returns a new object with the same values

But, if you wish to change any argument you do with copyWith constructor it will return the object copy with the new argument value you pass

Note: In copyWith constructor, suppose if you change one argument value then other argument value stays the same as the first object.