toPlusText method

String toPlusText([
  1. String sign = "+"
])

Example:

String number = null.toPlusText();
print(number); // Output: 0

number = 15.toPlusText();
print(number); // Output: 15

number = -15.05.toPlusText();
print(number); // Output: +15.05

Implementation

String toPlusText([
  String sign = "+",
]) {
  num x = this ?? 0;
  if (x < 0) {
    x = x * -1;
    return "$sign$x";
  }
  return "$x";
}