Jason House wrote:
Andrei Alexandrescu Wrote:
Jarrett Billingsley wrote:
On Mon, May 18, 2009 at 1:46 PM, Andrei Alexandrescu
<seewebsiteforem...@erdani.org> wrote:
Final switch works with enums and forces you to handle each and every value
of the enum. Regular switch gets ranged cases by the syntax case a: .. case
b: (I've always thought switch would be greatly helped by that).
Kind of an odd syntax. Why not "case a .. b:"? Parsing issues?
It's consistency. Everywhere in the language a .. b implies b is
excluded. In a switch you want to include b. So I reflected that in the
syntax. In fact, I confess I'm more proud than I should be about that
little detail.
Consistency???
While I can see where you're coming from, I still see plenty of inconsistencies. It's still a range (defined with .. too). Having slices and foreach use syntax a and meaning 1 but switch using syntax a' and meaning 2 kind of sucks.
You'd have to squint real hard to see a range. A range is
expr1 .. expr2
That code is
case expr1: .. case expr2:
I mean you can't tell me that as soon as ".." is within a mile it's a range.
Andrei
