Hi I wonder why I cannot get values of a entry using at: | aBag | aBag := Bag new. aBag addAll: ‘aabbbacaccca’. aBag at: $a >>> 5 I have the impression that this is because Bag API never got the correct amount of love but may be I’m wrong. What is your opinion? S

it is because at: is in fact occurrencesOf: S > On 23 Oct 2022, at 11:26, stephane ducasse <stephane.ducasse@inria.fr> wrote: > > Hi > > I wonder why I cannot get values of a entry using at: > > | aBag | > aBag := Bag new. > aBag addAll: ‘aabbbacaccca’. > aBag at: $a >>>> 5 > > I have the impression that this is because Bag API never got the correct amount of love > but may be I’m wrong. > > What is your opinion? > > S

For me it makes sense that in your example `aBag at: $a` returns `5` Because as you said, a Bag is for keeping occurrences. So, at: $a should return how many occurrences $a has Sebastian ----- Mail original ----- > De: "Stephane Ducasse" <stephane.ducasse@inria.fr> > À: "Pharo Development List" <pharo-dev@lists.pharo.org> > Envoyé: Dimanche 23 Octobre 2022 09:27:45 > Objet: [Pharo-dev] Re: About Bag API > it is because at: is in fact occurrencesOf: > > S > >> On 23 Oct 2022, at 11:26, stephane ducasse <stephane.ducasse@inria.fr> wrote: >> >> Hi >> >> I wonder why I cannot get values of a entry using at: >> >> | aBag | >> aBag := Bag new. >> aBag addAll: ‘aabbbacaccca’. >> aBag at: $a >>>>> 5 >> >> I have the impression that this is because Bag API never got the correct amount >> of love >> but may be I’m wrong. >> >> What is your opinion? >> > > S

Hello Everyone, It also makes sense to me. the message `addAll: aCollection`, is defined in **Collection** object. The behavior of addAll: is to add every object of the collection. So every dev who learn pharo will understand `addAll: aCollection` message, add all object of the collection aCollection. If you want to count a String just send an `add:` message to Bag object. Finally the behavior of the Pharo Bag seems similar to Python Counter Object [1]. I don't understand why you found this behavior strange. I hope it will help. [1] : https://docs.python.org/3/library/collections.html#collections.Counter -- Dutriez Clément Le dim. 23 oct. 2022 à 13:35, Sebastian Jordan Montano < sebastian.jordan@inria.fr> a écrit : > For me it makes sense that in your example `aBag at: $a` returns `5` > > Because as you said, a Bag is for keeping occurrences. So, at: $a should > return how many occurrences $a has > > Sebastian > > ----- Mail original ----- > > De: "Stephane Ducasse" <stephane.ducasse@inria.fr> > > À: "Pharo Development List" <pharo-dev@lists.pharo.org> > > Envoyé: Dimanche 23 Octobre 2022 09:27:45 > > Objet: [Pharo-dev] Re: About Bag API > > > it is because at: is in fact occurrencesOf: > > > > S > > > >> On 23 Oct 2022, at 11:26, stephane ducasse <stephane.ducasse@inria.fr> > wrote: > >> > >> Hi > >> > >> I wonder why I cannot get values of a entry using at: > >> > >> | aBag | > >> aBag := Bag new. > >> aBag addAll: ‘aabbbacaccca’. > >> aBag at: $a > >>>>> 5 > >> > >> I have the impression that this is because Bag API never got the > correct amount > >> of love > >> but may be I’m wrong. > >> > >> What is your opinion? > >> > > > S >

thanks clement. I was looking for at: while occurrencesOf: was it. Now I introduced removeKey: ifAbsent: and keys because they are missing. S > On 23 Oct 2022, at 16:49, Clément Dutriez <dutriezcle@gmail.com> wrote: > > Hello Everyone, > > It also makes sense to me. > > the message `addAll: aCollection`, is defined in **Collection** object. > The behavior of addAll: is to add every object of the collection. > So every dev who learn pharo will understand `addAll: aCollection` message, add all object of the collection aCollection. > If you want to count a String just send an `add:` message to Bag object. > > Finally the behavior of the Pharo Bag seems similar to Python Counter Object [1]. > > I don't understand why you found this behavior strange. > > I hope it will help. > > [1] : https://docs.python.org/3/library/collections.html#collections.Counter <https://docs.python.org/3/library/collections.html#collections.Counter> > -- > Dutriez Clément > > > Le dim. 23 oct. 2022 à 13:35, Sebastian Jordan Montano <sebastian.jordan@inria.fr <mailto:sebastian.jordan@inria.fr>> a écrit : > For me it makes sense that in your example `aBag at: $a` returns `5` > > Because as you said, a Bag is for keeping occurrences. So, at: $a should return how many occurrences $a has > > Sebastian > > ----- Mail original ----- > > De: "Stephane Ducasse" <stephane.ducasse@inria.fr <mailto:stephane.ducasse@inria.fr>> > > À: "Pharo Development List" <pharo-dev@lists.pharo.org <mailto:pharo-dev@lists.pharo.org>> > > Envoyé: Dimanche 23 Octobre 2022 09:27:45 > > Objet: [Pharo-dev] Re: About Bag API > > > it is because at: is in fact occurrencesOf: > > > > S > > > >> On 23 Oct 2022, at 11:26, stephane ducasse <stephane.ducasse@inria.fr <mailto:stephane.ducasse@inria.fr>> wrote: > >> > >> Hi > >> > >> I wonder why I cannot get values of a entry using at: > >> > >> | aBag | > >> aBag := Bag new. > >> aBag addAll: ‘aabbbacaccca’. > >> aBag at: $a > >>>>> 5 > >> > >> I have the impression that this is because Bag API never got the correct amount > >> of love > >> but may be I’m wrong. > >> > >> What is your opinion? > >> > > > S