NaturalNumberSet.elements

1 import std.algorithm : equal;
2 import std.range : iota;
3 
4 NaturalNumberSet set;
5 auto someNumbers = iota(set.partSize).filter!"a % 3 == 0";
6 
7 foreach (i; someNumbers)
8 {
9     set.add(i);
10 }
11 
12 assert(equal(someNumbers, set.elements));