multi_index

[Andrei Alexandrescu]

On 3/5/12 11:07 AM, Ellery Newcomer wrote:
> import multi_index;
> import replace;
>
> template RBTreeZ(Value, Preds...){
> template Splat(size_t i, size_t N){
> static if(i >= N) enum Splat = "";
> else{
> enum Splat = Replace!(q{
> OrderedUnique!("a", Preds[$i]),
> }, "$i",i) ~ Splat!(i+1, N);
> }
> }
> enum ss = (Replace!( q{
> alias MultiIndexContainer!(Value,
> IndexedBy!($indeces)) RBTreeZ;
> }, "$indeces",Splat!(0,Preds.length)));
> mixin(ss);
> }
> void main(){
> alias RBTreeZ!(int, "a<b", "a>b") MahRBTree;
> // it compiles; good enough for me
> }

That's pretty cool. We should define easier ways to do this kind of stuff.

Andrei