Base type for arrays

[jmh530 via Digitalmars-d-learn]

I want to write a function template that works for any array of a 
particular type, but not the base type, so real[], real[][], etc, 
but not real. I was using ForeachType to do some testing, but it 
doesn't really get the base type. It just takes one of the [] off 
and returns the remaining type (see code below). ElementType from 
std.range seems to operate in a similar way. There are also ways 
to do this for associative arrays, but they don't apply here 
either.

How do I go about just getting the actual base type of an array?

import std.stdio;
import std.traits;

void main() {
	real[2] x;
	x[0] = 0;
	x[1] = 1;
	
	writeln(is(ForeachType!(typeof(x)) == real)); //prints true

	real[2][2] xx;
	xx[0][0] = 0;
	xx[1][0] = 1;
	xx[0][1] = 2;
	xx[1][1] = 3;
	
	writeln(is(ForeachType!(typeof(xx)) == real));  //prints false
	writeln(typeid(ForeachType!(typeof(xx)));       //prints real[2]
}