flutter - How to remove trailing zeros using Dart

Question

I would like the optimal solution for removing trailing zeros using Dart. If I have a double that is 12.0 it should output 12. If I have a double that is 12.5 it should output 12.5

Answer 1

I made regular expression pattern for that feature.

double num = 12.50;  //12.5
double num2 = 12.0; //12
double num3 = 1000; //1000

RegExp regex = RegExp(r"([.]*0)(?!.*d)");

String s = num.toString().replaceAll(regex), "");