int-double auto array

[Dennis Ritchie via Digitalmars-d-learn]

Hi.
To create int-double array I have to pre-initialize the auto 
array:

import std.stdio;
import std.algorithm;

void main() {

        auto s = [5.31, 6];

        s = s.remove(0, 1);

        double k;

        readf("%s", &k); // 17.32

        s ~= k, s ~= 5, s ~= 1.125;

        writeln(s); // [17.32, 5, 1.125]
}

I can do it something like this (without initialization)?

import std.stdio;

void main() {

        auto s = []; // wrong

        double k;

        readf("%s", &k); // 17.32

        s ~= k, s ~= 5, s ~= 1.125;

        writeln(s); // [17.32, 5, 1.125]
}