Color

readme.md

Color

This enormous Dart program contains zero errors and warnings. This code has associated html and css.

Find this at dartpad.dartlang.org/?source=b833e9a2-7162-4a85-a7ed-90be32a9c91d.

Created with <3 with dartpad.dartlang.org.

main.dart

class Color {
  String to_s() {
    if(this is Red){
      return "#FF0000";
    }else if(this is Green) {
      return "#00FF00";
    }else if(this is Blue) {
      return "#0000FF";
    }else if(this is Rgb) {
      return "rgb";
    }else {
      throw new Error();
    }
  }
}

class Red extends Color{}
class Green extends Color{}
class Blue extends Color{}
class Rgb extends Color {
  num r;
  num g;
  num b;
   Rgb(this.r,this.g,this.b);
}

void main() {
  Color c = new Rgb(255,255,255);
  print(c.to_s());
}