On 2/5/20 8:49 AM, Claudiu wrote: > In class "Min" definition I am receiving this error: "cannot implicitly > override base class method `IncrementalStat.accumulate` with > `Min.accumulate`; add `override` attribute" Andrei's book is a little dated. Here is the errata: http://erdani.com/index.php?cID=109 Ali