fixed method

dynamic fixed({
  1. int? decimals = 2,
  2. bool? round = false,
})

Formats a double to a specific number of decimal places, with an option to round.

Returns an int if decimals is 0, otherwise returns a double.

decimals: The number of decimal places to keep. Defaults to 2. round: If true, the number is rounded to the specified number of decimal places. If false (default), the number is truncated.

Code of Practice:

double value = 3.1415926;
// **1. Default behavior (2 decimal places, no rounding):**

var result = value.fixed(); // 3.14
// **2. Specifying a different number of decimals:**

var result = value.fixed(decimals:  4); // 3.1415
// **3. Rounding to a specific number of decimals:**

var result = value.fixed(decimals:  2, round: true); // 3.15
// Using fixed with decimals: 0 is like calling .toInt()
// **4. Getting an integer result:**

var result = value.fixed(decimals: 0); // 3

Implementation

dynamic fixed({int? decimals = 2, bool? round = false}) {
  if (decimals == null) {
    decimals = 2;
  }
  if (round == null) {
    round = false;
  }
  double result = this;
  if (round) {
    int factor = pow(10, decimals).toInt();
    result = (this * factor).round() / factor;
  }
  result = double.parse(this.toStringAsFixed(decimals));
  // Return int if decimals = 0, double otherwise
  return decimals == 0 ? result.toInt() : result;
}