如何在颤振中对字符串中的双值求和？

Question

Hello I have a simple string formatted like that (2.0, 1.0, 1.0, 3.0, 5.0)

I don't found how to simply make a sum of each value 2.0+1.0+1.0+3.0+5.0 = 11.0

Thank you

Answer 1

One way you can do is like this.

  String str = "(2.0, 1.0, 1.0, 3.0, 5.0)";
  str = str.replaceAll("(","");
  str = str.replaceAll(")","");
  List<String> strDoubles = str.split(", ");
  
  double sum = 0;
  strDoubles.forEach((String item){
    sum = sum + double.parse(item);
  });
  print(sum);       //<-- prints 12