Re: how to return map(fn)

[steve via Digitalmars-d-learn]

float times_two(float x) {return 2*x;}

// if you would rather make sure the result is an array
float[] times_two_array(float[] arr) {
   import std.algorithm; // for map
   import std.array; // for array
   return arr
      .map!times_two // map your function
      .array; // convert to an array
}

void main() {
   import std.stdio;
   import std.algorithm; // for map
   alias map2x = map!times_two;
   writeln(map2x([1., 2., 3.]));
   float[] arr2 = times_two_array([1., 2., 3.]);
   writeln(arr2);
}
```

-Steve

that is exactly what I was trying to achieve thank you so much!