- Pharo-users - lists.pharo.org

Re: [Pharo-users] Collection with memory?

by stepharo

https://code.google.com/p/xtreams/ Le 22/3/15 22:27, Alain Rastoul a Ã©crit : > Le 22/03/2015 21:44, Denis Kudriashov a Ã©crit : >> Hi >> >> It is another perfect task for XStreams: >> >> r := #('a12' 'b12' 'a13' 'a14' 'c23' 'a16') reading selecting: [:each | >> each first = $a]. >> r get > a12 >> r get > a13 >> > Looks interesting :) > You have a link for this package in Pharo (or squeak) ? > I found only java package, or mails and slides talking of it in smalltalk > TIA >

March 22, 2015

Re: [Pharo-users] Collection with memory?

by stepharo

Le 22/3/15 22:05, Sven Van Caekenberghe a Ã©crit : >> On 22 Mar 2015, at 21:44, Denis Kudriashov <dionisiydk(a)gmail.com> wrote: >> >> Hi >> >> It is another perfect task for XStreams: >> >> r := #('a12' 'b12' 'a13' 'a14' 'c23' 'a16') reading selecting: [:each | each first = $a]. >> r get > a12 >> r get > a13 > Beautiful ! Yes but with r next. r next I was reading the XTreams API recently but this is forbidden for me to open another project before finishing what I started. Now if somebody else would like to help pushing Xtreams in Pharo 50. :) > > Thx Denis. > >> 2015-03-22 20:47 GMT+03:00 stepharo <stepharo(a)free.fr>: >> Hi >> >> I need a collection that does the following: >> >> col := #('a12' 'b12' 'a13' 'a14' 'c23' 'a16') asMyNewCollection. >> col findFirst: [:each | each first = $a] >> > a12 >> col findFirst: [:each | each first = $a] >> > a13 >> >> Do you know a collection that would work? >> So I have the impression that such behavoir could be defined with a kind of methods wrapper. >> >> Stef >> >> >> > >

March 22, 2015

Re: [Pharo-users] Collection with memory?

by stepharo

This is like the Iterator Design pattern and this is interesting. Why don't you give a try to see how it grows? Thanks Alain >> >> > May be this "memory" could be implemented in another object (and/or > Traits?) , allowing several threads to traverse the collection, and > add extensibility to the collection framework. > > The general idea, inspired from dotnet+smalltalk > (I don't know if this fit well with smalltalk patterns, may be total > junk and not doable ? -btw it's just a proposition) > > Collection>> asQueryable > "=> a Queryable Object that would implement first, next, based on a > predicate." > ^Queryable on: self readStream. > > Queryable class >> on: aStream > ^self new on: aStream > > Queryable>> where: aPredicateBlock > self predicate: aPredicateBlock > > Queryable>> first > self stream reset . > ^self next. > Queryable>>next > [self stream atEnd not > and: [ (self predicate value: (current := self stream next)))] > whileFalse. > ^ self stream atEnd ifTrue: [nil] > ifFalse: [self current]. > (...) > > col := #('a12' 'b12' 'a13' 'a14' 'c23' 'a16') asQueryable where: > [:each | each first = $a]. > col first. -> 'a12' > col next. -> 'a13' > > Those dotnet linq patterns are cool, on a dynamic langage like > smalltalk with > tools like GTInspector + roassal and Moose, wouldn't it be ultra cool ? > :) >

March 22, 2015

Re: [Pharo-users] Collection with memory?

by Alain Rastoul

Le 22/03/2015 21:44, Denis Kudriashov a Ã©crit : > Hi > > It is another perfect task for XStreams: > > r := #('a12' 'b12' 'a13' 'a14' 'c23' 'a16') reading selecting: [:each | > each first = $a]. > r get > a12 > r get > a13 > Looks interesting :) You have a link for this package in Pharo (or squeak) ? I found only java package, or mails and slides talking of it in smalltalk TIA -- Regards, Alain

March 22, 2015

Re: [Pharo-users] new link to query all projects in smalltalkhub

by Julien Delplanque

Oh, yes i missed it sorry! It would be good to have a link somewhere on smalltalkhub that inform the existence of this resource :) Julien On 22/03/15 21:41, Esteban Lorenzano wrote: > yesâ¦ it is no more. > > now is http://smalltalkhub.com/list <http://smalltalkhub.com/list> > > sorry for the mess, but I announced the changeâ¦ you just missed it :P > > Esteban > >> On 22 Mar 2015, at 21:25, Julien Delplanque <julien(a)tamere.eu> wrote: >> >> Hi Esteban, >> >> Seems that the link is dead now? >> >> Regards, >> >> Julien >> >> >> >> -- >> View this message in context: http://forum.world.st/new-link-to-query-all-projects-in-smalltalkhub-tp4810… >> Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com. >> >

March 22, 2015

Re: [Pharo-users] Collection with memory?

by Tudor Girba

It is, indeed. Doru On Sun, Mar 22, 2015 at 10:05 PM, Sven Van Caekenberghe <sven(a)stfx.eu> wrote: > > > On 22 Mar 2015, at 21:44, Denis Kudriashov <dionisiydk(a)gmail.com> wrote: > > > > Hi > > > > It is another perfect task for XStreams: > > > > r := #('a12' 'b12' 'a13' 'a14' 'c23' 'a16') reading selecting: [:each | > each first = $a]. > > r get > a12 > > r get > a13 > > Beautiful ! > > Thx Denis. > > > 2015-03-22 20:47 GMT+03:00 stepharo <stepharo(a)free.fr>: > > Hi > > > > I need a collection that does the following: > > > > col := #('a12' 'b12' 'a13' 'a14' 'c23' 'a16') asMyNewCollection. > > col findFirst: [:each | each first = $a] > > > a12 > > col findFirst: [:each | each first = $a] > > > a13 > > > > Do you know a collection that would work? > > So I have the impression that such behavoir could be defined with a kind > of methods wrapper. > > > > Stef > > > > > > > > > -- www.tudorgirba.com "Every thing has its own flow"

March 22, 2015

Re: [Pharo-users] Collection with memory?

by Sven Van Caekenberghe

> On 22 Mar 2015, at 21:44, Denis Kudriashov <dionisiydk(a)gmail.com> wrote: > > Hi > > It is another perfect task for XStreams: > > r := #('a12' 'b12' 'a13' 'a14' 'c23' 'a16') reading selecting: [:each | each first = $a]. > r get > a12 > r get > a13 Beautiful ! Thx Denis. > 2015-03-22 20:47 GMT+03:00 stepharo <stepharo(a)free.fr>: > Hi > > I need a collection that does the following: > > col := #('a12' 'b12' 'a13' 'a14' 'c23' 'a16') asMyNewCollection. > col findFirst: [:each | each first = $a] > > a12 > col findFirst: [:each | each first = $a] > > a13 > > Do you know a collection that would work? > So I have the impression that such behavoir could be defined with a kind of methods wrapper. > > Stef > > >

March 22, 2015

Re: [Pharo-users] MySQL Access

by Merwan Ouddane

Hi, You can use the native mysql driver written in pharo :p http://smalltalkhub.com/#!/~DBXTalk/MysqlDriver/ Here is a bit of documentation: http://tribes19.github.io/MysqlNativeDriver.html Best regards, Merwan On 22/03/2015 11:48, olivier auverlot wrote: > Hi Volkert, > > If you have no need of portability, you can try the ODBC connector > (http://smalltalkhub.com/#!/~PharoExtras/ODBC > <http://smalltalkhub.com/#%21/%7EPharoExtras/ODBC>) > > Best regards > Olivier ;-) > > 2015-03-22 11:37 GMT+01:00 volkert <volkert(a)komponentenwerkstatt.de > <mailto:volkert@komponentenwerkstatt.de>>: > > Dear all, > > i need access to a MySQL DB from Pharo. What are my options here? > Is dbxtalk the way to go? > > I would like to start with Pharo 4.0. > > OS is Windows 8.1. > > BW, > Volkert > > > >

March 22, 2015

Re: [Pharo-users] [Pharo-dev] Cleaning/Simplifying Nautilus

by Sean P. DeNigris

Marcus Denker-4 wrote > I personally would even go back to the single key press ones... > > But lets discuss that *after* we finish the releaseâ¦ ;-) +1 to both ----- Cheers, Sean -- View this message in context: http://forum.world.st/Cleaning-Simplifying-Nautilus-tp4813946p4814209.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

March 22, 2015

Re: [Pharo-users] Collection with memory?

by Denis Kudriashov

Hi It is another perfect task for XStreams: r := #('a12' 'b12' 'a13' 'a14' 'c23' 'a16') reading selecting: [:each | each first = $a]. r get > a12 r get > a13 2015-03-22 20:47 GMT+03:00 stepharo <stepharo(a)free.fr>: > Hi > > I need a collection that does the following: > > col := #('a12' 'b12' 'a13' 'a14' 'c23' 'a16') asMyNewCollection. > col findFirst: [:each | each first = $a] > > a12 > col findFirst: [:each | each first = $a] > > a13 > > Do you know a collection that would work? > So I have the impression that such behavoir could be defined with a kind > of methods wrapper. > > Stef > > >

March 22, 2015