On 01/12/2018 11:26 PM, Michael wrote: > Tango was the original, and Phobos was introduced for D2 as a > competing library. Phobos is the original. In D1, Tango was an alternative standard library. With D2, you have Phobos as the standard library and you can use Tango on top of it. http://code.dlang.org/packages/tango