+1

I don't know if there is a practical use case for new:filledWith:
but I think that the examples you give are instructive.

Suggestion - for the method comments, consider this:

    "Evaluate aBlock with integers from 1 to: size as the block argument.
    Collect the resulting values into a new collection."

Dave


On Mon, Nov 18, 2019 at 03:00:34PM +0100, Marcel Taeumel wrote:
> Hi, all.
> 
> Any thoughts on this matter? Here are more examples:
> 
> OrderedCollection new: 20 filledWith: [100 atRandom].
> Set new: 20 filledWith: [:ea | (ea + 32) asCharacter].
> Dictionary new: 20 filledWith: [:ea | ea -> (ea + 32) asCharacter].
> 
> Further reading (for related naming and concepts):
> 
> (all implementors of ...)
> #collect:as:
> #fillFrom:with:
> #newFrom:
> #new:withAll:
> 
> Best,
> Marcel
> Am 06.09.2019 16:57:53 schrieb commits at source.squeak.org <commits at source.squeak.org>:
> A new version of Collections was added to project The Inbox:
> http://source.squeak.org/inbox/Collections-mt.852.mcz
> 
> ==================== Summary ====================
> 
> Name: Collections-mt.852
> Author: mt
> Time: 6 September 2019, 4:57:45.245608 pm
> UUID: 3582be1c-a006-ed46-a517-3d2d570db6cc
> Ancestors: Collections-mt.851
> 
> Proposal: Initialize a new collection with a computation block without needing an existing collection to #collect: from.
> 
> OrderedCollection new: 20 filledWith: [100 atRandom].
> 
> Thanks to Christoph (ct) for the idea.
> 
> If we want this in Trunk, there will be tests. :-)
> 
> =============== Diff against Collections-mt.851 ===============
> 
> Item was added:
> + ----- Method: ArrayedCollection class>>new:filledWith: (in category 'instance creation') -----
> + new: size filledWith: aBlock
> + "Similar to #collect:as: and #fillFrom:with: but uses only the interval (1 to: size) to fill the collection. Different compared to #new:withAll: because aBlock can return different values for each index."
> +
> + | result |
> + result := self new: size.
> + 1 to: size do: [:each | result at: each put: (aBlock cull: each)].
> + ^ result!
> 
> Item was added:
> + ----- Method: Collection class>>new:filledWith: (in category 'instance creation') -----
> + new: size filledWith: aBlock
> + "Similar to #collect:as: and #fillFrom:with: but uses only the interval (1 to: size) to fill the collection. Different compared to #new:withAll: because aBlock can return different values for each index."
> +
> + | result |
> + result := self new: size.
> + 1 to: size do: [:each | result add: (aBlock cull: each)].
> + ^ result!
> 
> 

>