Hi Rene Paul -I hope my reply wasnât condescending. That wasnât the intent, but we sometimes find that students are asking you to do their homework and rather than a directly answering, itâs more instructive to try and help them reason on the code - particularly as Smalltalk is a language where you can reason on the code. Anyway, I hope the concept of how a BlockClosure works has got you hooked (it was the light bulb moment for me, many years ago - and I still marvel at it today - itâs so elegant). Tim
On 19 Sep 2025, at 19:43, stephane ducasse <stephane.ducasse@inria.fr> wrote:
Hi tim
Rene Paul is long time follower of Pharo. He is now a retired mathematician and this is nice to see him coding in Pharo :)
S
On 18 Sep 2025, at 09:49, Tim Mackinnon via Pharo-users <pharo-users@lists.pharo.org> wrote:
Hi - is this a homework question? While anyone here can tell you what it does - its probably more helpful to you to work through it and properly understand it.
You haven't shown what the output is when you try it - which will give you a clue. Equally - in Smalltalk, the names of selectors like: #do:separatedBy: convey meaning (which is why we like to use good names, that hint at what parameters do). Finally - have you looked at the implementation of the method? The nice thing about Smalltalk is that there is very little magic - you can see the code that runs for operations - including things like #ifTrue: . Why don't you position your cursor on #do: and press ctrl-m (or cmd-m - for show iMplementors - its also in the context menu). This will let you see the code and you should be able to work it out. For fun - try doing the same for: 3 = 3 ifTrue: [ 1 + 1]. Finally - its also worth understanding [1+1] + 1 (and why it gives an error) whereas: [1+1] value + 1 dosn't.
Hope this helps.
Tim
On Thu, 18 Sep 2025, at 12:35 AM, Rene Paul Mages (ramix) via Pharo-users wrote: Hello,
Please give me a hint to understand the "do: separatedBy:" keyword message used in ProfStef tutorial :
i) in Pharo version 12 :
https://ramix.org/pharo/ProfStef/iterators23.png
ii) in Pharo version 13 :
https://ramix.org/pharo/ProfStef/iterators25.png
-- Thanks for your help. Rene Paul Mages (ramix) GnuPG key : 0x9840A6F7 https://sites.google.com/view/les-logiciels-libres/pharo https://twitter.com/RenePaulMages
Stéphane Ducasse http://stephane.ducasse.free.fr 06 30 93 66 73
"If you knew today was your last day on earth, what would you do differently? ....ESPECIALLY if, by doing something different, today might not be your last day on earth.â Calvin & Hobbes