Hi Levente,

I like that idea! Performance is a non-issue for my use case. I don't even have the need to remove elements. 

Are there any objections to include OrderedSet as a trivial subclass of OrderedDictionary to Squeak?

I have looked at the list implementation used in LRUCache. I love the terseness of the code. I wonder why it is not called CircularDoublyLinkedList to make it easier to find for other uses.

Bernhard

> Am 28.11.2018 um 18:48 schrieb Levente Uzonyi <leves at caesar.elte.hu>:
> 
> That OrderedSet is not really a set, just a thin wrapper over OrderedCollection, so performance will be surprisingly bad.
> Squeak has OrderedDictionary which has all the methods a Set needs:
> #at: anObject put: nil <=> #add: anObject
> #includesKey: anObject <=> #includes:anObject
> #keysDo: aBlock <=> #do: aBlock
> #removeKey: anObject <=> #remove: anObject
> 
> Note that removal will take O(size) time. If you need anything better, you have to implement your own set (e.g. a linked hash set. Squeak's LRUCache has a list implementation that can come handy).
> 
> Levente
> 
> On Tue, 27 Nov 2018, David T. Lewis wrote:
> 
>> Thanks Benoit,
>> 
>> The repository is http://www.squeaksource.com/PharoTaskForces, the package
>> is OrderedSet, and the latest version is OrderedSet-StephaneDucasse.2.mcz
>> 
>> Dave
>> 
>> On Wed, Nov 28, 2018 at 01:06:49AM +0000, Benoit St-Jean via Squeak-dev wrote:
>>> Your link doesn't work either.
>>> Go to ProjectsType OrderedSet in the search box.Only one result will come up (as PharoTaskForces)!If you click on that and browse the versions, you'll see the OrderedSet packages!
>>> ----------------- Beno??t St-Jean Yahoo! Messenger: bstjean Twitter: @BenLeChialeux Pinterest: benoitstjean Instagram: Chef_Benito
>>> IRC: lamneth Blogue: endormitoire.wordpress.com "A standpoint is an intellectual horizon of radius zero".?? (A. Einstein) 
>>>    On Tuesday, November 27, 2018, 7:58:38 p.m. EST, David T. Lewis <lewis at mail.msen.com> wrote:
>>> 
>>> That link does not work, but there is an OrderedDictionary project on
>>> at http://www.squeaksource.com/TFOrderedDictionary.html. It that it?
>>> On Wed, Nov 28, 2018 at 12:08:06AM +0000, Benoit St-Jean via Squeak-dev wrote:
>>> > There's that on SqueakSource.
>>> > http://squeaksource.com/@Ilyu71XtQNt-3Xwp/UMBrp13p
>>> > ----------------- > Beno??t St-Jean > Yahoo! Messenger: bstjean > Twitter: @BenLeChialeux > Pinterest: benoitstjean > Instagram: Chef_Benito
>>> > IRC: lamneth > Blogue: endormitoire.wordpress.com > "A standpoint is an intellectual horizon of radius zero".?? (A. Einstein) > >?? ?? On Tuesday, November 27, 2018, 5:18:51 p.m. EST, Bernhard Pieber <bernhard at pieber.com> wrote:?? >?? >?? Hi Squeakers,
>>> > > Does anyone know of an OrderedSet implementation for Squeak somewhere?
>>> > > Bernhard
>