gistfile1.d

import std.stdio;
import std.algorithm;

mixin template VarDecl(T, alias string VarName) {
  mixin (`private T `~VarName~`;`);
  mixin (`T get_`~VarName~`() { return this.`~VarName~`; }`);
  mixin (`void set_`~VarName~`(T value) { this.`~VarName~` = value; }`);
}

class Klass {
  mixin VarDecl!(int, "age");
  mixin VarDecl!(int, "height");
  mixin VarDecl!(string, "name");
}

int main() {
  auto k = new Klass;

  k.set_age(100);
  auto age = k.get_age();

  printf("%d\n", k.get_age());

  return 0;
}