On 04/01/2015 11:22 PM, Peter Uhnák wrote:
col := #(1 2 3 4 5) asOrderedCollection.
col do: [ :each | col remove: each. ].
col
As a general rule in Smalltalk, a lot of hassle can be avoided avoiding
loops. If you think you need a loop, stop and find a better way, it
likely already exists, in
col := #(1 2 3 4 5) asOrderedCollection.
col copy do: [ :each | col remove: each. ].
col
will work instead
Alexandre
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Alexandre Bergel http://www.bergel.eu
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> On Apr 2, 2015, at 3:22 AM, Pete
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:
BriceG wrote
> Hi,
> it depends on what is your goal but if you want to clean an
> OrderedCollection there's removeAll of if you want to remove specific item
> there's removeAllSuchThat:aBlock
>
> I had the following code working for your example:
>
> col := #(1 2 3 4 5) asOrderedCollection.
> a
On Thu, Apr 2, 2015 at 9:33 AM, Peter Uhnák wrote:
> On Thu, Apr 2, 2015 at 8:30 AM, Joachim Tuchel
> 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 mentione
On Thu, Apr 2, 2015 at 8:22 AM, Peter Uhnák wrote:
> Hi,
>
> I've just run into quite a nasty surprise
>
> col := #(1 2 3 4 5) asOrderedCollection.
> col do: [ :each | col remove: each. ].
> col
>
> it throws "NotFound: nil not found in OrderedCollection"
> I tes
On Thu, Apr 2, 2015 at 8:30 AM, Joachim Tuchel
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
Peter,
In general, removing from a Collection while iterating through it leads to
undefined results. The same is true for adding.
Just never do it
Joachim
> Am 02.04.2015 um 08:22 schrieb Peter Uhnák :
>
> Hi,
>
> I've just run into quite a nasty surprise
>
> col := #(1 2
