DIP19: Remove comma operator from D and provision better syntactic support for tuples

[Andrej Mitrovic]

On 9/23/12, Andrei Alexandrescu <SeeWebsiteForEmail at erdani.org> wrote:
> http://www.prowiki.org/wiki4d/wiki.cgi?LanguageDevel/DIPs/DIP19

Oh, I completely forgot to mention this little bug I've had due to the
comma operator a few weeks ago:

import std.stdio;

int getInt(string op)
{
    if (op, "a")
        return 1;
    else
    if (op == "b")
        return 2;
    else
        return 3;
}

void main()
{
    string op1 = "a";
    string op2 = "b";
    string op3 = "c";

    writeln(getInt(op1));
    writeln(getInt(op2));
    writeln(getInt(op3));
}

It was a result of a refactoring and the bug went unnoticed until I
started getting weird results back. The if/else was much bigger and
the comma was somewhere in the middle. So yeah, nuke it from orbit!