Bill Baxter wrote:
On Fri, Nov 20, 2009 at 3:34 PM, Walter Bright
<[email protected]> wrote:
Bill Baxter wrote:
Here's one thing I just found:
struct constructors don't work at compile-time:
struct Struct
{
this(int _n, float _x) {
n = _n; x = _x;
}
int n;
float x;
}
enum A = Struct(1,2);
// Error: cannot evaluate ((Struct __ctmp1;
// ) , __ctmp1).this(1,2F) at compile time
The C-style initializer works.
static opCall works too.
But if that bug is fixed, then I can't think of a reason to have the
classic C-style no-colons syntax.
It isn't a bug. You simply don't need constructors that progressively assign
parameters to fields.
Struct(1,2);
works just fine without that constructor being defined.
Right, but if you do define it (in order to do something extra upon
initialization -- validate inputs or what have you) then it no longer
works at compile time.
--bb
This is where CTFE should come to save the day.
Andrei
