...typeof(this)(r.save,f); }
    }

    auto myMap(alias f, R)(R r) {
        static if(__traits...

...ifr_ifru_ ifr_ifru;

    	// NOTE: alias will not work : alias ifr_ifrn.ifrn_name	    ifr...

...the alias to your struct as a template parameter, e.g.:

	struct MapResult(alias f...

...writeln;

  // with only struct:

  struct MapResult(alias range, alias f) {
    auto empty() { return range.empty...

When you write a lambda without type annotations, like `x => 2*x`, the compiler interprets...

...thing to do is to stay with alias template parameters for MapResult as well. I...

...typeof(this)(r.save,f); }
}

auto myMap(alias f, R)(R r) {
    return MapResult!(R...

...isD[8]: 8 ];

  auto app = appender!string();
  alias f = void delegate (string key, int value...

...ifr_ifru_ ifr_ifru;

    	// NOTE: alias will not work : alias ifr_ifrn.ifrn_name	    ifr...

...5);

  alias fun1 = (type a) => a * a;
  alias fun2 = (type a) => a * 2;
  alias fun3...