Method in

test/set/precede.cpp:58–62

Check if \a i is a member of set \a x

       /// Check if \a i is a member of set \a x
       bool in(int i, int x) const {
         CountableSetRanges xr(ds,x);
         Iter::Ranges::Singleton ir(i,i);
         return Iter::Ranges::subset(ir,xr);
       }

     public:
       /// Create and register test