On Fri, Oct 19, 2012 at 10:32:48PM -0700, H. S. Teoh wrote:
> On Sat, Oct 20, 2012 at 03:06:56AM +0200, bearophile wrote:
> > I'd like to write code like this (the constructors of the structs
> > must take 1 argument):
> >
> > // some imports here
> > void main() {
> > BigInt[] data1 = [5, 6, 9];
> > Ranged!(int,5,10)[] data2 = [5, 6, 9];
> > Nibble[] data3 = [1, 2, 15]; // Nibble.sizeof == 1
> > alias Typedef!int Mint;
> > Mint[] data4 = [5, 6, 9];
> > }
> >
> >
> > Do you like this feature?
> [...]
>
> What about mixin() with a CTFE function that expands an array of
> initializers at compile-time? Something like:
[...]
OK, here's a tested, working example:
import std.stdio;
string structArray(S)(string[] args...) {
string s = "[";
string delim = "";
foreach (a; args) {
s ~= delim ~ S.stringof ~ "(" ~ a ~ ")";
delim = ",";
}
return s ~ "]";
}
struct AStruct {
int x, y;
}
void main() {
AStruct[] arr = mixin(structArray!AStruct("1,1", "1,2", "2,2",
"2,3"));
writeln(arr);
}
T
--
"Life is all a great joke, but only the brave ever get the point." -- Kenneth
Rexroth
