August 2014 - Pharo-users - lists.pharo.org

Two Questions from a Newbie
by Ichiseki Aug. 8, 2014

Aug. 8, 2014

Konnichiwa First thanks to those that gave me some directions to start with Pharo / Smalltalk. Now I have some questions that I'm sure are very stupid. The first one is, is there a way to use the bouncing atoms and the lights on on Pharo 3? Because I tried to build it in there and it doesn't work The second one is why there are like three different smalltalk environments? Pharo Squeek and Cuis? What are the differences? Is there a standard? I find this extremelly intriguing as it seems like there is a lot of dupplicate effort? The third one is which is the line between the core language and frameworks and libraries in Pharo? I found that, for instance Cuis has something like a basic image and some external frameworks, pharo has some internal frameworks and lots of externals. This is weird from someone comming from other languages. The fourth is I found that documentation is very, very scarce especially for some frameworks. This is also a major drawback for a newcomer to pharo. A very thick entry barrier. Thank you Ichiro -- View this message in context: http://forum.world.st/Two-Questions-from-a-Newbie-tp4772384.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

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NativeBoost : optimisation of the machine code generation
by Thomas Bany Aug. 8, 2014

Aug. 8, 2014

Hi everyone, I'm trying to reduce the computation time of the following pseudo-code: - memory allocation (~40 doubles) - object heap to C heap copying - NativeBoost call (nbCall:) - memory freeing The time profiling results are bellow: - 24*3600 calls : > 1 minute - 24*3600 calls with only memory allocation and copying : < 1 second - 1 call with a 24*3600 loop inside de C code : < 1 second So it appears that the very coslty step is the transition from Pharo to C. And I was wondering if it was possible to drasticly reduce this time by doing something like, generate the the machine code once and call it multiple time ? Thanks in advance ! Thomas.

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Slice loading/merging differences question
by Tim Mackinnon Aug. 8, 2014

Aug. 8, 2014

Hi - I am still a bit confused about the difference between load vs. merge with Monticello? Last month, when I tried to verify a bug fix, I did a load - and it caused other things (dependencies?) to be loaded into my clean image and so I ended up with something else in a broken state. So I had to do a Merge - get just the specific fixes and I could prove everything worked. Yesterday however I wanted to test a fix Damien made for bug 13526. But when I Merged it, I hit a DNU and then noticed he had put the following comment (Slice .2 depends on 13787). So I repeated the same merge step for 13787 and it then worked (apart from another edge case I found and he has now fixed). But this has got me thinking, I donât really understand the difference between merge/load. Can someone explain it to me in the above context? Should I have âloadedâ 13526 so that it pulled in the dependency indicated? (I notice in the slice description - it shows - Dependencies: Tool-Base-DamienPollet.24). I thought Monticello managed dependencies - so now Iâm confused why I need to do Merge anyway? Related to this, when the next âreleaseâ image gets built - how are these slices assembled such that Tool-Base-DamienPollet.24 is correctly loaded in release image? Thanks for any help. Tim

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Versionner and issue tracking
by Evan Donahue Aug. 8, 2014

Aug. 8, 2014

Hello, I am working on figuring out how to upload my first project to smalltalkhub. I am using Versionner and when I commit, I am presented with a prompt for "Retrieve Slice title" with a field for "issue number" and "title." Since I have no issue tracking for my project that I am aware of, I am unsure both what to put in these fields and, more practically, how to accept a given issue number, as there does not seem to be any kind of 'confirm' button. Thanks, Evan

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New to Pharo and working on a small project
by Pernet Alexis Aug. 7, 2014

Aug. 7, 2014

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Rewrite Tool
by Mark Rizun Aug. 7, 2014

Aug. 7, 2014

Hi guys, After working on refactorings, I started implementing Rewrite Tool, which provides GUI to create rewrite rools. At this point it's in early stage, but you can take a look at it now. Info on blog: http://myfuncoding.blogspot.com/ Download: http://smalltalkhub.com/#!/~MarkRizun/RewriteTool Simple example on YouTube: https://www.youtube.com/watch?v=ZY8QfIo-A6E&feature=youtu.be&a It's my first video, that I recorded, so don't judge me:) As always, feedback is welcome! Cheers, Mark -- View this message in context: http://forum.world.st/Rewrite-Tool-tp4772272.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

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I need some explaination about arguements assignment
by aria2end Aug. 7, 2014

Aug. 7, 2014

Hello, I am new to smalltalk and I would really appreciate your help so I can better use and understand Pharo. So here is the problem, I wanted to implement a function to get the value of my tree struct nodes in a recursive manner and I wanted to concatenate them to a String ( aText ) and later show them on the Transcript. showLists | aText | aText := lol level, (String with: Character cr). self recursiveShowLists: lol withText: aText tabsNumber: 1. recursiveShowLists: aLoL withText: aText tabsNumber: aNumb | counter index | aLoL lols isEmpty ifFalse: [ counter := 1. [ counter <= aNumb ] whileTrue: [ aText := aText , (String with: Character tab). counter := counter + 1 ]. index := 1. aNumb := aNumb + 1. LoL lols do: [ :each | aText := aText , each level , (String with: Character cr) ]. ] Without having the last line ( LoL lols do: ... ) everything works fine but when I include it and as soon as debugger reaches to [counter <= aNumb ] and wants to evaluate it, my arguments start to act weird. aText will become nil and aNumb will hold te value of aText! I fixed this issue by adding another temporary variable ( copyText ) and instead of direct assignment of aText I used the copyText: recursiveShowLists: aLoL withText: aText tabsNumber: aNumb | counter index copyText | copyText := aText. aLoL lols isEmpty ifFalse: [ counter := 1. [ counter <= aNumb ] whileTrue: [ copyText := copyText , (String with: Character tab). counter := counter + 1 ]. index := 1. aLoL lols do: [ :each | copyText := copyText , each level , (String with: Character cr) ] ] I really like to know the reason behind this issue, I appreciate all the explanations. Thanks, Aria -- View this message in context: http://forum.world.st/I-need-some-explaination-about-arguements-assignment-… Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

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Seeing all the methods that is used in a method
by aria2end Aug. 7, 2014

Aug. 7, 2014

Hi, I know that I can see senders and implementers of a method but is there any way to see all methods that are used in a method ? or any way to see all the send messages to other methods limited to scope of a method ? Thanks, Aria -- View this message in context: http://forum.world.st/Seeing-all-the-methods-that-is-used-in-a-method-tp477… Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

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Seeing all the methods that is used in a method
by aria2end Aug. 7, 2014

Aug. 7, 2014

Hi, I know that I can see senders and implementers of a method but is there any way to see all methods that are used in a method ? or any way to see all the send messages to other methods limited to scope of a method ? Thanks, Aria -- View this message in context: http://forum.world.st/Seeing-all-the-methods-that-is-used-in-a-method-tp477… Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

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Jobs and Internships
by stepharo Aug. 6, 2014

Aug. 6, 2014

HRworks: Get on board as graduate HRworks is the pioneer in software for service solutions in Germany. As early as 1998, HRworks developed a web-based business software for the cloud. With this software solution, companies can bill travel expenses and manage absences and equipment. More than 800 customers such as McDonaldâs, Tom Tailor, Lexmark or the Warner Music Group rely on HRworks every day. Have you already completed your studies and are looking for your first professional experience? After our âboot campâ you will take responsibility for minor components and tasks. You will gain experience and gradually you will be entrusted with more demanding tasks, depending upon your abilities. What do we expect from you? â¢ That you enjoy programming â¢ Smalltalk is your passion â¢ Good spoken English What does HRworks offer you? â¢ An open, motivated & efficient team that enjoy working together â¢ Working on a unique application architecture â¢ Optimum working conditions, such as the open-space concept â¢ Fruit & drinks; in particular, as much coffee as you need â¢ Above-average pay What next? Are you interested? Then we look forward to receiving your application by email to job(a)hrworks.de. More information: www.hrworks.de/career/ Any questions? JosÃ©-SimÃ³n GerÃ³nimo, +49 761 47954-12, job(a)hrworks.de ---------------------------------------------------------------------------------------------------- Hi guys HRWorks is a consortium member since the beginning and they are looking for Smalltalkers. Pass the message around. Stef HRworks: Internship HRworks is the pioneer in software for service solutions in Germany. As early as 1998, HRworks developed a web-based business software for the cloud. With this software solution, companies can bill travel expenses and manage absences and equipment. More than 800 customers such as McDonaldâs, Tom Tailor, Lexmark or the Warner Music Group rely on HRworks every day. Are you a student looking for an internship from 5 to 6 months? What do we expect from you? â¢ That you enjoy programming â¢ Smalltalk is your passion â¢ Good spoken English What tasks will you be given? You will develop new features and functions and improve our internal components and development processes. All features that you subsequently implement will be used by hundred thousand employees in prestigious companies. What does HRworks offer you? â¢ An open, motivated & efficient team that enjoy working together â¢ Working on a unique application architecture â¢ Optimum working conditions, such as the open-space concept â¢ Fruit & drinks; in particular, as much coffee as you need â¢ Above-average pay â¢ A student room What next? Are you interested? Then we look forward to receiving your application by email to job(a)hrworks.de. More information: www.hrworks.de/career/ Any questions? JosÃ©-SimÃ³n GerÃ³nimo, +49 761 47954-12, job(a)hrworks.de

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