Getting addition of all specific vlaues of classes in a list in flutter-CodePudding

Here is the structure;

I want to get the sum of all the amounts Bills[ BillStatement(amount:20, date'24/07/2020'), BillStatement(amount:30, date'24/07/2020'), BillStatement(amount:10, date'24/07/2020'), ]

CodePudding user response：

Use this method:

getItemTotal(List<BillStatement> bills){
    double sum= 0.0;
    bills.forEach((e) {
    sum  = e.amount;
    }
    
    return sum;
    }

CodePudding user response：

final bills = [
  BillStatement(amount:20, date:'24/07/2020'),
  BillStatement(amount:30, date:'24/07/2020'),
  BillStatement(amount:10, date:'24/07/2020'),
];

num totalAmount = 0;
bills.forEach((billStatement) => totalAmount  = billStatement.amount);

print(totalAmount);