double 2 decimal places flutter
/// Define an extension: extension Ex on double { double toPrecision(int n) => double.parse(toStringAsFixed(n)); } /// Usage: void main() { double d = 2.3456789; double d1 = d.toPrecision(1); // 2.3 double d2 = d.toPrecision(2); // 2.35 double d3 = d.toPrecision(3); // 2.345 }