Static Length Propagation of Ranges

[Nordlöw via Digitalmars-d-learn]

Is there a generic way to do


typeof(fn(E.init))[] map1(alias fn, E, size_t n)(E[n] container)
{
   import std.algorithm.iteration : map;
   import std.array : array;
   return container[].map!fn.array;
}

@safe pure nothrow unittest
{
   int[42] c;
   auto result = map1!(_ => _^2)(c);
}


but with propagation of length of return value of `f` to a static 
array instead, without having to specialize each range separately?

One less elegant way would be to replace the call to `array` with 
an overload of `std.container.util.make` for static arrays, that 
checks at run-time that the length of the output static array 
matches the length of the input range?