Possible way to capture things in a loop?

stackframe.d

auto stackFrame(T)(T rng)
{
    static struct Apply
    {
        import std.range;
        T rng;
        int opApply(scope int delegate(ElementType!T) dg) {
            foreach(e; rng) {
                if(auto r = dg(e))
                    return r;
            }
            return 0;
        }
    }
    return Apply(rng);
}

void main()
{
    import std.stdio;
    void delegate()[] dgs;
    
    foreach(i; [1, 2, 3, 4]) {
        dgs ~= () => writeln(i);
    }
    foreach(d; dgs) d(); // 4 4 4 4
    dgs = null;
    foreach(i; [1, 2, 3, 4].stackFrame) {
        dgs ~= () => writeln(i);
    }
    foreach(d; dgs) d(); // 1 2 3 4
}