转换列表<int>串起 flutter</int>

Question

Lets say we have a list of integers:

List<int> integers=[4, 5];

I want to convert this List to string value like this:

String val="4,5"

How can I manage to do this in dart?

Answer 1

You can use join method to do so.

print(integers.join(","));

Answer 2

The shortest answer is

integers.join(',');

If you want more control over the operation where let's say you want to do additional computation at each iteration you can use this:

  List<int> integers=[4, 5];

  StringBuffer buffer = new StringBuffer();
  for (int i = 0; i < integers.length; i++) {
    buffer.write(integers[i].toString() + ',');
  }
  //REMOVE LAST COMMA
  String values = '';
  if (integers.length > 0)
    values = buffer.toString().substring(0, buffer.length -1);
  print(values);