- Pharo-users - lists.pharo.org

Re: [Pharo-users] ++ -- again

by Tobias Pape

Am 2011-04-20 um 22:18 schrieb Ted F.A. van Gaalen: > Thanks Tobias and Igor for your thoughts about this increment/decrement theme. > @Tobias: what kind of side effect(s) are you talking about? I don't > understand, sorry. No problem, I wrote a bit complicated. What I mean is that i++ instructs the object âiâ to change its state, ie, increment itself. However, the Object in âiâ is meant to be an integer. So, how to interpret that? say, âiâ is 5. Essentially, i++ says âfive, change your state to be sixâ But that would imply, because all integers are the respecive same over the image, that all fives are suddenly sixes. The point is, in C, variables denote memory cells, and it is a common operation to say âmemory cell, increment your content by oneâ, whereas in Smalltalk, a variable denotes an object and such an increment is rather senseless on integer objects. In other words, each integer in a Smalltalk image is a kind of Singleton. ( as 1 = 1 " => true" 1 == 1 " => true" ) Hence, | a b | a := 1. b := 1. a = b " => true (a and b have the same content)". a == b "=> true (ie, they are the indentical object)". "but" a ++. "hypothetical" a = b "=> ??, probably false". a == b " => ??, can't think of that". So Long, -Tobias

April 21, 2011

Re: [Pharo-users] ++ -- again

by Igor Stasenko

On 20 April 2011 23:18, Ted F.A. van Gaalen <tedvga(a)gmail.com> wrote: > Thanks Tobias and Igor for your thoughts about this increment/decrement theme. > @Tobias: what kind of side effect(s) are you talking about? I don't > understand, sorry. > > @Igor, Yes, I completely agree with you that Smalltalk should not > transform to a C++ like dialect. Â At first, I simply would like wanted > ++ -- (monadic) and for that matter also += -= Â *= and /= Â (dyadic) as > messages for the Integer classes, possibly as primitive methods. > > But then again, If this would be implemented, I can imagine people > using ugly and hard to read statement trains like > anotherInt += anInt ++ * 1234 , > I don't find these constructs very nice either.. So, after realizing > this.. perhaps you're right: just let it be. Â (probably would have > needed here () as wel) Yes. As to me it is simply not worth to dedicate a special operator for increment or decrement. It makes no sense, considering how many other operators you could imagine, and considering how often you using value increment in smalltalk. If you do things right, you don't need to write it by yourself , because it is done once in #to:do: and/or #do: loops. So, it is really very small number of use cases where you may need to use increment or decrement. Unlike from C, where you will use ++ or -- on almost every loop , in smalltalk for loops you using collections and closures, incread of manually writing them again and again. -- Best regards, Igor Stasenko AKA sig.

April 21, 2011

Re: [Pharo-users] [COTDC] 52 - PCXReadWriter

by Guillermo Polito

I am an Image ReadWriter supposed to be in charge of PCX file encoding and decoding. Actually, as my instances does not implement understandsImageFormat, they use the default ^false implementation and I cannot be used. I don't have uses in the image also :). But in case I am fixed, the code to open a morph with a pcx image is: PCXReadWriter formFromFileNamed: 'anImage.pcx'. ;) Guille On Wed, Apr 20, 2011 at 3:17 PM, laurent laffont <laurent.laffont(a)gmail.com>wrote: > Today: PCXReadWriter > > > Comment Of The Day Contest - One Day One Comment > Rules: > #1: Each day a not commented class is elected. Each day the best comment > will be integrated with name of the author(s). > #2: If you cannot comment it, deprecate it. > Results: http://code.google.com/p/pharo/wiki/CommentOfTheDayContest > > Laurent >

April 20, 2011

Re: [Pharo-users] Pharo-users Digest, Vol 16, Issue 31

by Anthony Romo

On Tue, Apr 19, 2011 at 4:05 AM, <pharo-users-request(a)lists.gforge.inria.fr>wrote: > Send Pharo-users mailing list submissions to > pharo-users(a)lists.gforge.inria.fr > > To subscribe or unsubscribe via the World Wide Web, visit > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-users > or, via email, send a message with subject or body 'help' to > pharo-users-request(a)lists.gforge.inria.fr > > You can reach the person managing the list at > pharo-users-owner(a)lists.gforge.inria.fr > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of Pharo-users digest..." > > > Today's Topics: > > 1. Re: [ANN] new mailinglist for tracker mails (Igor Stasenko) > 2. Re: [ANN] new mailinglist for tracker mails (Marcus Denker) > 3. Request for mentor(s) within Pharos community (Anthony Romo) > 4. Re: Request for mentor(s) within Pharos community > (St?phane Ducasse) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Mon, 18 Apr 2011 13:08:22 +0200 > From: Igor Stasenko <siguctua(a)gmail.com> > Subject: Re: [Pharo-users] [ANN] new mailinglist for tracker mails > To: A friendly place where any question about pharo is welcome > <pharo-users(a)lists.gforge.inria.fr> > Message-ID: <BANLkTik+AJv4QxMX3oPMP9saJicHiBf5=A(a)mail.gmail.com> > Content-Type: text/plain; charset=UTF-8 > > On 18 April 2011 08:23, Marcus Denker <marcus.denker(a)inria.fr> wrote: > > > > The mails from the google tracker now go to this list: > > > > ? ? ? ? > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-bugtracker > > > > in turn, this means the traffic on the pharo-project list should be a bit > more managable. > > > > Err > > Which language do you prefer to display your messages? Fran?ais > > I prefer english, but there is no option how i could change that. > :( > > > ? ? ? ?Marcus > > > > > > -- > > Marcus Denker ?-- http://www.marcusdenker.de > > INRIA Lille -- Nord Europe. Team RMoD. > > > > > > > > > > -- > Best regards, > Igor Stasenko AKA sig. > > > > ------------------------------ > > Message: 2 > Date: Mon, 18 Apr 2011 13:16:02 +0200 > From: Marcus Denker <marcus.denker(a)inria.fr> > Subject: Re: [Pharo-users] [ANN] new mailinglist for tracker mails > To: A friendly place where any question about pharo is welcome > <pharo-users(a)lists.gforge.inria.fr> > Message-ID: <C6ED0C16-1999-48C6-A2D4-8AE12B34E0B0(a)inria.fr> > Content-Type: text/plain; charset=iso-8859-1 > > > On Apr 18, 2011, at 1:08 PM, Igor Stasenko wrote: > > > On 18 April 2011 08:23, Marcus Denker <marcus.denker(a)inria.fr> wrote: > >> > >> The mails from the google tracker now go to this list: > >> > >> > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-bugtracker > >> > >> in turn, this means the traffic on the pharo-project list should be a > bit more managable. > >> > > > > Err > > > > Which language do you prefer to display your messages? Fran?ais > > > > I prefer english, but there is no option how i could change that. > > :( > > > This is good for learning. :-) > > But I changed it. > > Marcus > > -- > Marcus Denker -- http://www.marcusdenker.de > INRIA Lille -- Nord Europe. Team RMoD. > > > > > ------------------------------ > > Message: 3 > Date: Mon, 18 Apr 2011 17:31:27 -0600 > From: Anthony Romo <romo.alromo.anthony73(a)gmail.com> > Subject: [Pharo-users] Request for mentor(s) within Pharos community > To: pharo-users(a)lists.gforge.inria.fr > Message-ID: <BANLkTinUh6XqrGz=DYw4uguNV031D1SG4Q(a)mail.gmail.com> > Content-Type: text/plain; charset="iso-8859-1" > > Today I joined the pharo-users mailing list. I am a masters degree > candidate in software design. I would appreciate an email from member(s) > of > the community that would be willing to communicate with me and give me a > quick start as to how best to participate in the community. >

April 20, 2011

++ -- again

by Ted F.A. van Gaalen

Thanks Tobias and Igor for your thoughts about this increment/decrement theme. @Tobias: what kind of side effect(s) are you talking about? I don't understand, sorry. @Igor, Yes, I completely agree with you that Smalltalk should not transform to a C++ like dialect. At first, I simply would like wanted ++ -- (monadic) and for that matter also += -= *= and /= (dyadic) as messages for the Integer classes, possibly as primitive methods. But then again, If this would be implemented, I can imagine people using ugly and hard to read statement trains like anotherInt += anInt ++ * 1234 , I don't find these constructs very nice either.. So, after realizing this.. perhaps you're right: just let it be. (probably would have needed here () as wel) Greetings from Ravensburg area TedvG

April 20, 2011

[COTDC] 52 - PCXReadWriter

by laurent laffont

Today: PCXReadWriter Comment Of The Day Contest - One Day One Comment Rules: #1: Each day a not commented class is elected. Each day the best comment will be integrated with name of the author(s). #2: If you cannot comment it, deprecate it. Results: http://code.google.com/p/pharo/wiki/CommentOfTheDayContest Laurent

April 20, 2011

Re: [Pharo-users] [ANN] Magma 1.2

by Mariano Martinez Peck

Thanks Chris for all your effort. I think Magma is a real needed product. On Wed, Apr 20, 2011 at 7:10 AM, Elliot Finley <efinley.lists(a)gmail.com>wrote: > On Tue, Apr 19, 2011 at 4:08 PM, Chris Muller <asqueaker(a)gmail.com> wrote: > > Magma 1.2 is now finally released for Squeak 4.2, Pharo 1.1 and Pharo > > 1.2. This new release offers improved performance thanks to > > minimizing the problem associated with finalization, as well as > > avoiding Squeak's slow become except once every 30 seconds. See > > Much thanks for this and especially for the improved documentation. > > Elliot > _______________________________________________ > Magma mailing list > Magma(a)lists.squeakfoundation.org > http://lists.squeakfoundation.org/mailman/listinfo/magma > -- Mariano http://marianopeck.wordpress.com

April 20, 2011

PharoCasts: Test coverage with Hapao

by laurent laffont

Vanessa and Alexandre show us Hapao, an innovative test coverage tool implemented in the Pharo Smalltalk programming language. You will see how they analyse the ProfStef interactive tutorial, increase test coverage and commit their contribution to SqueakSource. http://www.pharocasts.com/2011/04/test-coverage-with-hapao.html -- Laurent Laffont - @lolgzs Pharo Smalltalk Screencasts: http://www.pharocasts.com/ Blog: http://magaloma.blogspot.com/ Developer group: http://cara74.seasidehosting.st

April 20, 2011

Re: [Pharo-users] [COTDC] 51 - TestCaseAnnouncement

by Sven Van Caekenberghe

On 19 Apr 2011, at 21:22, laurent laffont wrote: > Today: TestCaseAnnouncement > > > Comment Of The Day Contest - One Day One Comment > Rules: > #1: Each day a not commented class is elected. Each day the best comment will be integrated with name of the author(s). > #2: If you cannot comment it, deprecate it. > Results: http://code.google.com/p/pharo/wiki/CommentOfTheDayContest > > Laurent --- I am TestCaseAnnouncement, an Announcement regarding the execution of TestCases. I know the TestCase, the test method selector and the TestResult I am announcing about. --- I am TestCaseStarted, a TestCaseAnnouncement indicating that a unit test will be run. --- I am TestCaseEnded, a TestCaseAnnouncement indicating that a unit test has run. ---

April 19, 2011

[COTDC] 51 - TestCaseAnnouncement

by laurent laffont

Today: TestCaseAnnouncement Comment Of The Day Contest - One Day One Comment Rules: #1: Each day a not commented class is elected. Each day the best comment will be integrated with name of the author(s). #2: If you cannot comment it, deprecate it. Results: http://code.google.com/p/pharo/wiki/CommentOfTheDayContest Laurent

April 19, 2011