Arrays passed by almost reference?

[Ali Cehreli]

I haven't started reading Andrei's chapter on arrays yet. I hope I won't find out that the following behavior is expected. :)

import std.cstream;

void modify(int[] a)
{
    a[0] = 1;
    a ~= 2;

    dout.writefln("During: ", a);
}

void main()
{
    int[] a = [ 0 ];

    dout.writefln("Before: ", a);
    modify(a);
    dout.writefln("After : ", a);
}

The output with dmd 2.035 is

Before: [0]
During: [1,2]
After : [1]

I don't understand arrays. :D

Ali