Filtering a tuple of containers with indices

[maik klein via Digitalmars-d-learn]

The question is also posted on

https://stackoverflow.com/questions/33757981/filtering-a-tuple-of-containers-with-indicies

template tupIndexToRange(alias Tup, Indices...){
  import std.meta;
  static if(Indicies.length == 0){
    alias tupIndexToRange = AliasSeq!();
  }
  else{
    alias tupIndexToRange = AliasSeq!(Tup[ Indices[0] ][], 
tupIndexToRange!(Tup,Indices[1..$]));
  }
}

void main{
  alias Integrals = AliasSeq!(Array!int, Array!float, 
Array!double);
  Integrals integrals;

  alias IntegralRange = tupIndexToRange!(integrals,0,1);
}

void main{
  alias Integrals = AliasSeq!(Array!int, Array!float, 
Array!double);
  Integrals integrals;

  alias IntegralRange = tupIndexToRange!(integrals,0,1);
}

I want to achieve something like this

auto range = zip(tupIndexToRange!(integrals,0,1));

I think the main problem is that Tup[ Indicies[0] ] doesn't work, 
to me it should have expanded to this 
AliasSeq!(itegrals[0][],integrals[1][]);


This is roughly what I want to achieve

  alias Integrals = AliasSeq!(Array!int, Array!float, 
Array!double);
  Integrals integrals;
  integrals[0].insertBack(1);
  integrals[1].insertBack(2);
  integrals[2].insertBack(3);

  auto range = zip(tuple(integrals[0][],integrals[1][]).expand);
  writeln(range);
  foreach(e;range){
    writeln("element: ",e);
  }
But instead of "auto range = 
zip(tuple(integrals[0][],integrals[1][]).expand);" I want it to 
be generic "auto range = zip(tupIndexToRange!(integrals, 
AliasSeq!(0, 1)).expand);"

Maybe I need use mixins?