On Friday, 7 February 2014 at 11:41:43 UTC, Dicebot wrote: > On Friday, 7 February 2014 at 11:37:16 UTC, Ola Fosheim Grøstad > wrote: >> Is it a language mandated speed issue? > > It is assumed by http://dlang.org/errors.html P.S. Throwing exception is not that slow in D, it is allocating new instance that makes a huge impact.