Peter,
several approaches have been shown already. I'd like to add:
* Iterate over a copy and remove from the original (slower because of
lookup in the original)
* If possible, sort the collection and use something like [col atEnd]
whileTrue:/whileFalse: with removeFirst/removeLast
* Select: a collection of items to be removed and then do a removeAll:
* Use #- to remove one collection from the other
* Iterate over the original and add only the wanted objects to a new
collection which will then be used in the future - Streams may be
helpful here
* I have never used XStreams, but there may even be some nice options to
find in it
HTH
Joachim
Am 02.04.15 um 09:33 schrieb Peter Uhnák:
On Thu, Apr 2, 2015 at 8:30 AM, Joachim Tuchel
<jtuc...@objektfabrik.de <mailto:jtuc...@objektfabrik.de>> wrote:
In general, removing from a Collection while iterating through it
leads to undefined results. The same is true for adding.
That is a question of approach; apart from mentioned #copy I could
also do something like
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
col := #(1 2 3 4 5) asOrderedCollection.
[col isNotEmpty] whileTrue: [ col remove: col first ].
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
if I had an Iterator I could also reset it after each change.
What I am asking is what the best approach would be - I want do some
processing for each item and remove it from the collection after it is
done.
Peter
