- Pharo-users - lists.pharo.org

Re: [Pharo-users] How are people doing TDD?

by Stuart Herring

On 18 December 2012 13:10, Tim Mackinnon <tamackinnon(a)gmail.com> wrote: > I really like the new Toggle from Class to Test (cmd-j) option that got > introduced - someone has definitely been writing tests in Pharo - however it > does my head in that pressing it after editing a method doesn't jump me > back. I also find the same problem when editing a test - that pressing cmd-t > to run it, just puts a "t" in my source code and doesn't run the test. > I have the same frustration with alt/cmd-t it kind of defeats the purpose of a keyboard shortcut if you've got to click somewhere on the screen first before you can use it. Have you looked at Autotest? http://squeaksource.com/Autotest.html It will run tests whenever you save them, and also tries to determine which tests to run when you modify model classes. The only thing that's a little bit disappointing is that it doesn't update the test indicators in the browser. I wonder if in Pharo 2.0 someone could combine the concepts of the in-browser test runner and Autotest. So that accepting changes in the browser uses the same heuristics autotest does to run the tests, and then uses the Growl style notifications for failures, with the green/red/yellow test indicators being updated. Regards, Stuart

Dec. 18, 2012

Re: [Pharo-users] How are people doing TDD?

by Esteban A. Maringolo

It ain't no Dolphin. ;-) I also would like to know how to set the focus on the code pane. Regards. -- View this message in context: http://forum.world.st/How-are-people-doing-TDD-tp4659726p4659728.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

Dec. 18, 2012

How are people doing TDD?

by Tim Mackinnon

I am curious how people are doing TDD in Pharo? I just tried a session with some of the guys at the UK Smalltalk meetup and I was finding it a bit frustrating in the Pharo 1.4 image. I really like the new Toggle from Class to Test (cmd-j) option that got introduced - someone has definitely been writing tests in Pharo - however it does my head in that pressing it after editing a method doesn't jump me back. I also find the same problem when editing a test - that pressing cmd-t to run it, just puts a "t" in my source code and doesn't run the test. On a related theme - I also find it a bit awkward that I often have to click in the source pane to get focus there to enter some code, I'm kind of missing some easy keystroke to put focus there so I can just start typing in a new method. Am I missing some tricks here? Will the new 2.0 help with some of this (I wanted to try it to see but the one click link is broken). I did try the CI link - but I couldn't see where the 1-click job was running. As an aside - there seem to be lots of red balls on Jenkins? Tim -- View this message in context: http://forum.world.st/How-are-people-doing-TDD-tp4659726.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

Dec. 18, 2012

Who's in charge of the Pharo Website - some corrections might help.

by Tim Mackinnon

Guys - who's in charge of the Pharo website as there are some small corrections that might help. It took me ages to realise that the Large font items on the left hand nav are clickable (not sure if there is an easy way to indicate this?) - but anyway I was looking for the Nabble link and I notice that the link to Nabble in the FAQ page (http://www.pharo-project.org/documentation/faq) is incorrect where'as the one on the Community page is correct. Also the Pharo-2.0 One Click link on (http://www.pharo-project.org/pharo-download/beta-2-0) is broken. Tim -- View this message in context: http://forum.world.st/Who-s-in-charge-of-the-Pharo-Website-some-corrections… Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

Dec. 18, 2012

Re: [Pharo-users] Any recommended VPS Hosting for Pharo?

by Esteban A. Maringolo

Thanks Doru. webfusion.co.uk seems to be the English speaking counterpart of HostEurope. :) Which OS are you running in those VPS? Any further detail regarding average CPU/RAM consumption, type of app, etc. will be really appreciated. Best regards, -- Esteban. -- View this message in context: http://forum.world.st/Any-recommended-VPS-Hosting-for-Pharo-tp4659714p46597… Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

Dec. 18, 2012

Re: [Pharo-users] Any recommended VPS Hosting for Pharo?

by Tudor Girba

I am using hosteurope.de to host several pages and I am pretty happy with it. Cheers, Doru On 18 Dec 2012, at 01:22, "Esteban A. Maringolo" <emaringolo(a)gmail.com> wrote: > Does somebody runs Pharo in a VPS/Cloud environment? > Can that somebody recommend its hosting? > > I prefer Ubuntu/Debian solutions instead of CentOS (which seems to be the > norm), but mainly because AFAIK there are no pre-built binaries for it. > > I'll appreciate any real use experience, comments, discussions and flame > wars about this. :) > > Regards! > > -- > Esteban > > > > > > -- > View this message in context: http://forum.world.st/Any-recommended-VPS-Hosting-for-Pharo-tp4659714.html > Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com. > -- www.tudorgirba.com "Be rather willing to give than demanding to get."

Dec. 18, 2012

Any recommended VPS Hosting for Pharo?

by Esteban A. Maringolo

Does somebody runs Pharo in a VPS/Cloud environment? Can that somebody recommend its hosting? I prefer Ubuntu/Debian solutions instead of CentOS (which seems to be the norm), but mainly because AFAIK there are no pre-built binaries for it. I'll appreciate any real use experience, comments, discussions and flame wars about this. :) Regards! -- Esteban -- View this message in context: http://forum.world.st/Any-recommended-VPS-Hosting-for-Pharo-tp4659714.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

Dec. 18, 2012

[ann] moose and humane assessment courses

by Tudor Girba

Hi, In the new year, I will be organizing a couple of public courses around the topic of humane assessment and Moose. These two will be held in Bern: - Humane Assessment Primer on January 25. This course is relevant for both managers and engineers. It covers assessment economics and the means to integrate humane assessment in the development process and in the organization: http://www.humane-assessment.com/courses/humane-assessment-primer - Moose Apprentice on February 7-8. This course is relevant for engineers. This is an introductory hands-on course on using the Moose analysis platform for putting humane assessment into practice: http://www.humane-assessment.com/courses/moose-apprentice Cheers, Tudor -- www.tudorgirba.com "Don't give to get. Just give."

Dec. 17, 2012

Re: [Pharo-users] CQRS and Event Sourcing in Smalltalk

by Rafael Luque

Thank you for your responses, StÃ©phane, I think Fowler is not the best source for this topic, in spite of his fame. Sorry, but I'm a bit iconoclastic and my impression about him changed after the "prevalence case" [1]. I think Greg Young coined the term and is the main evangelist about CQRS and Event Sourcing. Norbert, I find your descriptions really interesting, but I assume that you have implemented all the required infrastructure: event bus, event store, snapshotting mechanism, etc. What I'd like to know is if there is an Smalltalk project similar to the Axon framework for Java [2] providing implementations of the most important building blocks in CQRS architecture, such as aggregates, repositories and event buses. For instance, I think it would be specially useful a framework to build webapps after the CQRS architecture. [1] https://gist.github.com/1186975 [2] http://www.axonframework.org/ Rafa 2012/12/14 Norbert Hartl <norbert(a)hartl.name> > > Am 13.12.2012 um 20:36 schrieb Sven Van Caekenberghe <sven(a)stfx.eu>: > > > On 13 Dec 2012, at 17:56, Norbert Hartl <norbert(a)hartl.name> wrote: > > > >> Am 13.12.2012 um 17:27 schrieb StÃ©phane Ducasse < > stephane.ducasse(a)inria.fr>: > >> > >>>> Hi all, > >>>> > >>>> Please, anyone knows a Pharo framework to implement CQRS and/or Event > Sourcing? > >>> > >>> I read in diagonal the paper of martin fowler and I would say just > some command patterns? > >>> + some meta modeling? > >>> no? > >> > >> Well, you can give that particular answer to _a lot_ of problems :) I > think the important part is the "event store" and how you snapshot state. > So it is more or less a persistence question. Staying in-image it is rather > easy. I use an approach where I still have the business objects holding > state. But state is altered through commands and every command emits a set > of events that get written to a timeline. The objects analyzing the > timeline are more CQRS like because the state evolves out of the timeline. > So I have an > >> > >> Event class with instVar time (aDateAndTime) > >> A timeline is a sorted collection (by time) of events. > >> An object has a stream on the timeline. Its position is the positional > information about the snapshot state. > >> Snapshot state is updated by following the stream (next: 100, upToDate: > â¦ upToEventType:â¦) > >> > >> Altogether you have sources that put events on the timeline. Separated > from that you have the consumer that reads the snapshot state and updates > it. > >> > >> Norbert > > > > Sounds really cool and exciting, Norbert. > > I think many people including myself are thinking along those lines. > > Next time we meet you'll have to show me ;-) > > > Sure :) I think this approach has some benefits. Normal objects can be > seen as the only and most actual snapshot of a state changing history. The > history gets discarded immediately. But this history has a great value in > itself being able to replay/undo things or develop new values that can be > applied at a later moment. We just need to look at the debugger. A stack or > context chain is just a collection of moments in time. If you go up the > stack we go back in time. But objects stay in the now. It would just be > perfect if the object state would go back in time as well. > > Let's take a networked service as an example. If we look more closely we > can see a snapshot of data is about actuality and consistency. We always > like to have consistent data. But actuality is ambiguous in a concurrent > media with non-deterministic latencies like the internet. If we separate > these we find the need to have data that is consistent at any point in > time. But reading the data does not have to return the newest state > available. > So we divide the process into three things: adding state change, updating > state snapshot, reading state snapshot. The adding is an append-only > operation that can be done in a very fast way by the persistence and has > less issues when it comes to concurrency. Updating the state snapshot from > the state change events can be done according to the needs for actuality or > performance. Just to make it clear: In this approach there is also just one > entity that is updating the state, so more concurrency problems solved. > Finally reading the state can be done in multiple ways. Either you read the > provided snapshot or you update the snapshot to the newest value in your > private copy of a state holder. This time again you are not changing > something concurrent. > > A more real life example is one of our products. I changed to model to > emit events 6 month ago. Well, using GemStone I didn't have to think about > persistence. It is just a persisted collection with a few million events in > it. 3 month _after_ I started to collect events I started to think about > what data I actually need to show on the web UI. Having all the history in > my hand I can derive plenty of different values just afterwards. Every > value has a stream on the events collection. So every value has its own > cursor in history. New values just start at the beginning of the collection > and catch to now. Old ones have just little to update. > > I hope this is useful somehow, > > Norbert > > > >

Dec. 17, 2012

is the date of 8th of February good for a sprint

by StÃ©phane Ducasse

Hi guys I would like to block a date for the next sprint at Lille. Would the 8th of february of for you? Stef

Dec. 17, 2012