Array literals' default type

[Jarrett Billingsley]

On Mon, Oct 12, 2009 at 10:47 AM, Don <nospam at nospam.com> wrote:

>> Wasn't the comma operator to be supposed to be important for automatic
>> code generation?
>
> It's used frequently in in the compiler internals. EG, given
>
> int foo(X x = default_value) { return 0; }
> then foo(); becomes:   (X tmp = default_value, foo(tmp));

There doesn't need to be any *syntactic* reservation for something
that's used internally by the compiler. I mean, we don't have to
explicitly mark which brace blocks introduce scopes, but
ScopeStatements are alive and well inside the compiler. CommaExp could
just become "SequenceExp" or something and it would have the exact
same effect. I really don't think there will be a lot of moaning if
comma expressions disappeared. And yes, for loop increments can be
special-cased, geez..