Hi, On Tue, Oct 16, 2018 at 1:28 PM Alistair Grant <akgrant0...@gmail.com> wrote:
> Hi Petr, > > On Tue, 16 Oct 2018 at 21:25, Petr Fischer via Pharo-users > <pharo-users@lists.pharo.org> wrote: > > > > My problem - use Dates as Dictionary keys - shortly: > > > > d1 := Date today translateToUTC. > > d2 := Date today. > > > > d1 = d2. (true!) > > Of course, this doesn't help with using Date as a key in a dictionary. > Probably your best option is to look at Sven's excellent ZTimezone > package (although I haven't tested it in this scenario). > The base problem here is that the hash of the dates is not the same for dates that are equal - that should never happen. If you try d1 hash = d2 hash you should see that the hash's are different (Petr for sure; you for the cases where the offsets are different). When objects (especially fo the same class) are =, then their hash must be the same as well, or things break. -cbc
