On Sat, 30 Mar 2019 at 01:09, Peter Kenny <pe...@pbkresearch.co.uk> wrote:
> Tim > > Going back to your original question, the answer is there all the time but > buried in the enormous method dictionaries of the Collection subclasses. And we have Tools > Finder > Examples > #(10 20 30 40) . 5 . 10 to help unbury such methods... > If > you look at SequenceableCollection>>atWrap: you will see that it does > exactly what you want. > > To get the item before the first, i.e. the zeroth: > #(1 2 3 4) atWrap: 0 => 4 > > To get the item after the last: > #(1 2 3 4) atWrap: 5 => 1 > > As seen here, the method is inherited by Array, so it should do all you > want. > > HTH > > Peter > > --------------- > > Marcus Denker-4 wrote > >> On 29 Mar 2019, at 14:24, Ben Coman < > >> I believe there have been some proposals to separate out the Process > >> related LinkedList stuff, but I can't remember the exact arguments. > > > > Yes, we did that… there is now ProcessList. > > > > We ran into that problem far too often “hey, LinkedList can be cleaned up > > easily like this!” —> boom, everything broken. > > > > Now we have ProcessList where it matters if code is changed to introduce > a > > message send more and LinkedList where it does not. > Cool !! cheers -ben
