March 2015 - Pharo-users - lists.pharo.org

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

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

by Esteban Lorenzano

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] new link to query all projects in smalltalkhub

by Julien Delplanque

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] Confusing ZeroDivide

by Nicolai Hess

2015-03-20 21:35 GMT+01:00 Nicolai Hess <nicolaihess(a)web.de>: > > > 2015-03-20 16:56 GMT+01:00 webwarrior <reg(a)webwarrior.ws>: > >> Why this: >> >> [ 1/0 ] on: ZeroDivide do: [:ex | ex resume: 1 ]. >> >> returns 1, but this: >> >> [ 1.0/0 ] on: ZeroDivide do: [:ex | ex resume: 1 ]. >> >> hangs (causes infinite loop) ? >> ------------------------------ >> View this message in context: Confusing ZeroDivide >> <http://forum.world.st/Confusing-ZeroDivide-tp4813627.html> >> Sent from the Pharo Smalltalk Users mailing list archive >> <http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html> at >> Nabble.com. >> > > > It is a bug. > > and now it has a bug entry: > > 15187 <https://pharo.fogbugz.com/default.asp?15187> > Endless loop on catching ZeroDivide for floats > > > And it is fixed in 40572

March 22, 2015

Re: [Pharo-users] Collection with memory?

by Alain Rastoul

Le 22/03/2015 18:57, stepharo a Ã©crit : > may be a first step would be to have findFirst: aBlock startingAt: based > on findFirst: > > > findFirst: aBlock > "Return the index of my first element for which aBlock evaluates as > true." > > | index | > index := 0. > [(index := index + 1) <= self size] whileTrue: > [(aBlock value: (self at: index)) ifTrue: [^index]]. > ^ 0 > > > >> 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 >> >> >> > > > 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 ? :) -- Regards, Alain

March 22, 2015

Re: [Pharo-users] Collection with memory?

by stepharo

may be a first step would be to have findFirst: aBlock startingAt: based on findFirst: findFirst: aBlock "Return the index of my first element for which aBlock evaluates as true." | index | index := 0. [(index := index + 1) <= self size] whileTrue: [(aBlock value: (self at: index)) ifTrue: [^index]]. ^ 0 > 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