Lambda capture by value

[JN via Digitalmars-d-learn]

import std.range;
import std.stdio;

alias NumberPrinter = void delegate();
NumberPrinter[int] printers;

void main()
{
    foreach (i; iota(5))
    {
        printers[i] = () { write(i); };
    }

    foreach (i; iota(5))
    {
        printers[i]();
    }
}

This prints 4 4 4 4 4.

How to make it so that it prints 0 1 2 3 4? Is it possible 
without changing the delegate definition to void delegate(int)?