October 2011 - Pharo-dev - lists.pharo.org

Re: [Pharo-project] aSet collect: answers aSet??

by Clara Allende

Ok, but this means I have to worry of the receiver's class before I send collect:, so as I don't fuck it all up.... and I don't want to think about that!!! See, if I want the collection of grades of the students, I would like to do this: grades ^self students collect: [.aStudent | aStudent grades] regardless of whatever is the class of students... This does the trick for all the collections, except for Set. And I donÂ´t know if students is an instance of Set, and I really don't want to think if it is or not. If I don't want repeated students and I create my collection as an instance of Set, an i.e.; I want to calculate the average, then I'm screwed because the collection I get from the collect: wasn't the want that I wanted. So, I have to know previously that my collection is an instance of Set, or if it isn't, so as to know if I have to convert it first.... And if I use collect: as:, as you suggest, this means the collections are no longer polymorphic for me :( Sorry, maybe I'm really stupid, but I don't know how that message solves best the problem than redefining collect: for Set. For the particular case I don't want the repeated objects (which AFAIK is not so common) I could send asSet. On 27 October 2011 11:05, Henrik Sperre Johansen < henrik.s.johansen(a)veloxit.no> wrote: > On 27.10.2011 15:40, Clara Allende wrote: > >> I know, but our students don't :) So they ran into problems because the >> message send didn't answer what they were specting.... because it makes >> sense that if I want to transform the objects in my collection, I might get >> repeated objects... Maybe I'm not thinking in terms of consistency, I'm just >> putting myself on student's shoes :P >> > The consistency rule to remember for #collect:/#select:/#reject: is that > they will return a collection of the receiver's species. > #collect:as: was added as a general answer to the situation your students > ran into :) > > set := Set withAll: #(1 2 3 4 5 6 7 8). > result := set collect: #even as: Bag. > > Cheers, > Henry > > > > -- "*Most good programmers do programming not because they expect to get paid or get adulation by the public, but because it is fun to program.*" Linus Torvalds

Oct. 27, 2011

Re: [Pharo-project] aSet collect: answers aSet??

by Henrik Sperre Johansen

On 27.10.2011 15:40, Clara Allende wrote: > I know, but our students don't :) So they ran into problems because > the message send didn't answer what they were specting.... because it > makes sense that if I want to transform the objects in my collection, > I might get repeated objects... Maybe I'm not thinking in terms of > consistency, I'm just putting myself on student's shoes :P The consistency rule to remember for #collect:/#select:/#reject: is that they will return a collection of the receiver's species. #collect:as: was added as a general answer to the situation your students ran into :) set := Set withAll: #(1 2 3 4 5 6 7 8). result := set collect: #even as: Bag. Cheers, Henry

Oct. 27, 2011

Re: [Pharo-project] aSet collect: answers aSet??

by merlyn＠stonehenge.com

>>>>> "Clara" == Clara Allende <clari.allende(a)gmail.com> writes: Clara> I know, but our students don't :) Perhaps that's another thing you want to add to your lessons, then? -- Randal L. Schwartz - Stonehenge Consulting Services, Inc. - +1 503 777 0095 <merlyn(a)stonehenge.com> <URL:http://www.stonehenge.com/merlyn/> Smalltalk/Perl/Unix consulting, Technical writing, Comedy, etc. etc. See http://methodsandmessages.posterous.com/ for Smalltalk discussion

Oct. 27, 2011

[Pharo-project] 1.3Core build moved to Jenkins

by Marcus Denker

Hi, With https://pharo-ic.lille.inria.fr being decommissioned, we are moving everything to Jenkins: https://ci.lille.inria.fr/pharo/ 1.3 Core is now here: https://ci.lille.inria.fr/pharo/view/Pharo%201.3/job/Pharo%20Core%201.3/ please update all links! TODO: -> Full (building now) -> OneClick Scripts -- Marcus Denker -- http://marcusdenker.de

Oct. 27, 2011

Re: [Pharo-project] aSet collect: answers aSet??

by Clara Allende

I know, but our students don't :) So they ran into problems because the message send didn't answer what they were specting.... because it makes sense that if I want to transform the objects in my collection, I might get repeated objects... Maybe I'm not thinking in terms of consistency, I'm just putting myself on student's shoes :P On 27 October 2011 10:26, Diaz Trepat, Ramiro < ramiro.diaz.trepat(a)jpmorgan.com> wrote: > Collections always return results on an new instance of its own #species. > **** > > That is fabulous to me. It is what's desired most times.**** > > With that in mind, if you expected a bag or something else, you should > convert (asXXX) before the collect.**** > > Cheers**** > > ** ** > > r.**** > > ** ** > > *From:* pharo-project-bounces(a)lists.gforge.inria.fr [mailto: > pharo-project-bounces(a)lists.gforge.inria.fr] *On Behalf Of *Clara Allende > *Sent:* 27 October 2011 14:15 > *To:* Pharo-project(a)lists.gforge.inria.fr > *Subject:* [Pharo-project] aSet collect: answers aSet??**** > > ** ** > > > Hi guys.. > This morning some students came with an exercise like this: > (Set with: 1 with: 2 with:3 with:4 with:5) collect:[:e | e even]. a > Set(false true) > > But they don't want to get aSet, (regardless this particular example > doesn't make sense)... the question is, why if I send collect: to aSet I get > aSet and not aBag? What happens if I *want* repeated elements after the > transformation? :( And when did this behavior change? > -- **** > > "*Most good programmers do programming not because they expect to get paid > or get adulation by the public, but because it is fun to program.*" **** > > Linus Torvalds**** > > ** ** > > This email is confidential and subject to important disclaimers and > conditions including on offers for the purchase or sale of securities, > accuracy and completeness of information, viruses, confidentiality, legal > privilege, and legal entity disclaimers, available at > http://www.jpmorgan.com/pages/disclosures/email. > -- "*Most good programmers do programming not because they expect to get paid or get adulation by the public, but because it is fun to program.*" Linus Torvalds

Oct. 27, 2011

Re: [Pharo-project] aSet collect: answers aSet??

by Diaz Trepat, Ramiro

Collections always return results on an new instance of its own #species. That is fabulous to me. It is what's desired most times. With that in mind, if you expected a bag or something else, you should convert (asXXX) before the collect. Cheers r. From: pharo-project-bounces(a)lists.gforge.inria.fr [mailto:pharo-project-bounces@lists.gforge.inria.fr] On Behalf Of Clara Allende Sent: 27 October 2011 14:15 To: Pharo-project(a)lists.gforge.inria.fr Subject: [Pharo-project] aSet collect: answers aSet?? Hi guys.. This morning some students came with an exercise like this: (Set with: 1 with: 2 with:3 with:4 with:5) collect:[:e | e even]. a Set(false true) But they don't want to get aSet, (regardless this particular example doesn't make sense)... the question is, why if I send collect: to aSet I get aSet and not aBag? What happens if I *want* repeated elements after the transformation? :( And when did this behavior change? -- "Most good programmers do programming not because they expect to get paid or get adulation by the public, but because it is fun to program." Linus Torvalds This email is confidential and subject to important disclaimers and conditions including on offers for the purchase or sale of securities, accuracy and completeness of information, viruses, confidentiality, legal privilege, and legal entity disclaimers, available at http://www.jpmorgan.com/pages/disclosures/email.

Oct. 27, 2011

[Pharo-project] aSet collect: answers aSet??

by Clara Allende

Hi guys.. This morning some students came with an exercise like this: (Set with: 1 with: 2 with:3 with:4 with:5) collect:[:e | e even]. a Set(false true) But they don't want to get aSet, (regardless this particular example doesn't make sense)... the question is, why if I send collect: to aSet I get aSet and not aBag? What happens if I *want* repeated elements after the transformation? :( And when did this behavior change? -- "*Most good programmers do programming not because they expect to get paid or get adulation by the public, but because it is fun to program.*" Linus Torvalds

Oct. 27, 2011

[Pharo-project] When using Autotest + TilingWindowManager, the sarch dialog is unaccesible

by Mariano Martinez Peck

Hi (alain?). When using Autotest + TilingWindowManager , if I then I am in the system browser and press cmd + f, the search dialog is too much in the top left of the screen. I cannot type in there, and I cannot move it. Look the attached screenshot. So... any ideas how we can fix that? what about just giving focus (bring to front) to the search windows just after opening it ? thanks in advance, -- Mariano http://marianopeck.wordpress.com

Oct. 27, 2011

Re: [Pharo-project] Weird Settings filtering

by Mariano Martinez Peck

Thanks Alain. I have created an issue so that not to forget. http://code.google.com/p/pharo/issues/detail?id=4945 Cheers On Tue, Oct 18, 2011 at 10:28 PM, Alain Plantec <alain.plantec(a)yahoo.com>wrote: > yes, it's weird. > I will fix that > thanks > Alain > > > On 18/10/2011 21:26, Mariano Martinez Peck wrote: > >> Hi Alain. I found something weird with the filtering of the Settings >> browser. I installed keymapping by >> >> Gofer new >> squeaksource: 'ShortWays'; >> package: 'ConfigurationOfKeymapping'; >> load. >> >> (ConfigurationOfKeymapping project version: #bleedingEdge) load >> >> Now...if you open the settings browser you see the category "Keymappings". >> But if I go to the input field, type "keymap" and hit enter, I see a result >> that contains "Keymapping" but not its item. >> So...it seems that the settings searches in the items of the category but >> not in the category name. So I wonder.... show we show the list if a >> category name matches? >> >> thanks >> >> -- >> Mariano >> http://marianopeck.wordpress.**com <http://marianopeck.wordpress.com> >> >> > > -- Mariano http://marianopeck.wordpress.com

Oct. 27, 2011

[Pharo-project] Windows disappear in saved image on startup

by Larry Kellogg

Hello, So, I have saved some Pharo 1.0 images, Pharo-1.8.image, for example, that contains a lot of changes that I have made, and packages that I have loaded. Now, when I bring up one of my saved images, I see all the windows the way they were for about three seconds, and then they all disappear. The image is still running but has none of the code I loaded. I tried to interrupt the image in startup (Command . on my Mac) but have been unsuccessful. Is there any way I can fix this problem? I have seven images that all display the same problem. I'm on Pharo 1.0 and running in an Amazon EC2 micro instance. Regards, Larry -- View this message in context: http://forum.world.st/Windows-disappear-in-saved-image-on-startup-tp3944123… Sent from the Pharo Smalltalk mailing list archive at Nabble.com.

Oct. 27, 2011