On Saturday, 21 December 2013 at 10:20:58 UTC, yazd wrote: > There is something weird. > How does UFCS compile since the earliest versions? > http://www.luismarques.eu/d/archeology/56CDCBDBE4688E996548A3F39E63843ADEFBF570 It has always worked for slices. The recent change expanded it to work with any type.