Re: [Pharo-users] compiling Pillar files locally (for LaserGame book)
Is TEXLive required for the PDF compilation? Maybe the setup I reported [1] for PBE1 on Windows would be similar? However I now have access to a Mavericks machine. Would that be a better option? What tools would you use to edit with ? (this is my first Mac - something to google for would be useful) I used either texmate or emacs (damien did a mode for pillar). But do not bother too much if you edit and break ping me and I will fix problems. Stef I see that [2] runs ./download.sh so perhaps that is all that is required in this case for the LaserGame book? [1] http://blog.openinworld.com/2012/05/contributing-to-pbe/ regarding [2] https://ci.inria.fr/pharo-contribution/job/PharoLaserGame/lastSuccessfulBuild/console cheers -ben
Re: [Pharo-users] We need *you* for the upcoming Pharo's website
please use nice looking font and large ones and go ahead :) On 16/4/14 18:44, kilon alios wrote: I was thinking of creating a screencast to explain in a few minutes why I like Pharo, emphasizing on live coding , the image and the development environment. By coincidence I recorded a test tutorial yesterday (before noticing this announcement) for the very basics of pharo, just 15 minutes. So its definitely something I am willing to do. Its just that will like to do several tries and possible edit it to make it as efficient and as simple as possible. So If you are not in a hurry I can offer something. On Wed, Apr 16, 2014 at 12:16 PM, Esteban Lorenzano esteba...@gmail.com mailto:esteba...@gmail.com wrote: please do not answer all at once! (subtle irony) anyway, I have to add that screencast has to be Pharo3 based. cheers, Esteban On 15 Apr 2014, at 13:03, Damien Cassou damien.cas...@gmail.com mailto:damien.cas...@gmail.com wrote: Hi everyone, we are working on a new website for Pharo! We need your help. If you have some time, please create and send us one of the following items: - An up-to-date screenshot of Pharo 3.0 that shows some cool features. It should be 800px wide ; - A screencast ; - A paragraph (around 40 words) that presents a nice topic about Pharo and a corresponding screenshot. We will select 1 large screenshot, 3 screencasts and 4 topic paragraphs. This could be a very nice way for you to contribute to Pharo! Best, -- Damien Cassou http://damiencassou.seasidehosting.st Success is the ability to go from one failure to another without losing enthusiasm. Winston Churchill
Re: [Pharo-users] how to duplicate document with Voyage
Hi norbert Olivier was doing a copy but it did not work and we thought that Voyage should offer a clone or something like that that does not mess up with the id. Because we already corrupted nicely a mongoDB. Stef On 17/4/14 10:17, Norbert Hartl wrote: Am 17.04.2014 um 10:08 schrieb Olivier Auverlot olivier.auver...@gmail.com: Hi, I'm using Voyage and I need to duplicate an existing document in a Mongo database. I suppose that the id must be changed before saving. What is the best way to do that ? If you need a shallow copy then you better just copy the object and store it. Changing the id is asking for trouble I guess. That would probably work if you implement #= on those objects but I think it is a hack. anObject copy save should do. Norbert
Re: [Pharo-users] how to duplicate document with Voyage
Ok so what I said was wrong :) On 17/4/14 10:48, olivier auverlot wrote: simply ? Thanks ;-) 2014-04-17 10:42 GMT+02:00 Esteban Lorenzano esteba...@gmail.com mailto:esteba...@gmail.com: On 17 Apr 2014, at 10:17, Norbert Hartl norb...@hartl.name mailto:norb...@hartl.name wrote: Am 17.04.2014 um 10:08 schrieb Olivier Auverlot olivier.auver...@gmail.com mailto:olivier.auver...@gmail.com: Hi, I'm using Voyage and I need to duplicate an existing document in a Mongo database. I suppose that the id must be changed before saving. What is the best way to do that ? If you need a shallow copy then you better just copy the object and store it. Changing the id is asking for trouble I guess. That would probably work if you implement #= on those objects but I think it is a hack. anObject copy save +1 should do. Norbert
Re: [Pharo-users] Voyage: how to delete references to objects.
esteban you should do a pass on the voyage documentation chapter and add this kind of infomration. We can pair write if you want. stef On 17/4/14 17:56, Esteban Lorenzano wrote: On 17 Apr 2014, at 15:18, Norbert Hartl norb...@hartl.name mailto:norb...@hartl.name wrote: Am 17.04.2014 um 15:05 schrieb olivier auverlot olivier.auver...@gmail.com mailto:olivier.auver...@gmail.com: thanks Robert for the explications. It’s Norbert btw. :) I agree with you that's the best way to remove a book is to delete the reference in ComicsCollection. But how to do that ? Must I simply remove the reference in the ordered collection ? Voyage will syncronize automatically the data in memory with the content of the database ? Must I force the save of the data after removing the reference ? You need to explicitly save it as we don’t have something like write barriers in the image. So aComicCollection removeBook: aBook; save is needed. yes, and also (if you want to be clean): aBook remove. (assuming aBook is also persistent). But as Sabina points: #enableMissingContent in CommicCollection will help you to simplify things, then you just need: aBook remove, and next time you read aComicCollection it will “clean” the invalid reference. I call that “eventual integrity” :P but beware of it… is considered “power voyage programming” :) Esteban Norbert Olivier ;-) 2014-04-17 14:10 GMT+02:00 Norbert Hartl norb...@hartl.name mailto:norb...@hartl.name: Am 17.04.2014 um 13:53 schrieb olivier olivier.auver...@gmail.com mailto:olivier.auver...@gmail.com: Hi, I'm using Voyage in a Pharo application. I have two MongoDB collections which are ComicsCollection and ComicsBook. Each book is attached to a instance of ComicsCollection. The reference of each book is stored in an ordered collection (in the instance of ComicsCollection). The problem is that if I remove a book, the reference to the book is not deleted from ComicsCollection. How can I remove properly a book and the reference to the book ? From the smalltalk image view the problem is usually exactly the opposite: You don’t delete objects but you remove references to them. As voyage maps objects it is a good idea to stay in the object realm. So you should rather remove the book from the collection. This way you won’t get errors just garbage. The „real“ problem that arises then is that the book would still be in the database. Just like it is in the image but there is no garbage collector for mongo. To decide that from the image is not possible. You load only a sub graph from the database into image memory. So you don’t know if there are other objects referencing the book. If your records fit all in memory you could load all collections and books and build the difference between all referenced books in the collections and the total amount of books. The difference will be the set of objects not being referenced by a collection and those can be deleted. If the records do not fit in memory an alternative strategy would be needed. I started to research if it is possible to build a map/reduce based garbage collector for common cases but got distracted. But I have the same problem so I will need to pick it up some time. hope that helps, Norbert
Re: [Pharo-users] how to duplicate document with Voyage
On 17/4/14 21:45, Esteban Lorenzano wrote: Hi, copy should not mess with the id (unless your objects redefines = and hash). I can take a look if Olivier is around tomorrow. Thanks. I told him to talk to you but this is a really shy guy :) He is pushing Pharo to build other application in the lab :) Esteban On 17 Apr 2014, at 21:41, pharo4s...@free.fr wrote: Hi norbert Olivier was doing a copy but it did not work and we thought that Voyage should offer a clone or something like that that does not mess up with the id. Because we already corrupted nicely a mongoDB. Stef On 17/4/14 10:17, Norbert Hartl wrote: Am 17.04.2014 um 10:08 schrieb Olivier Auverlot olivier.auver...@gmail.com: Hi, I'm using Voyage and I need to duplicate an existing document in a Mongo database. I suppose that the id must be changed before saving. What is the best way to do that ? If you need a shallow copy then you better just copy the object and store it. Changing the id is asking for trouble I guess. That would probably work if you implement #= on those objects but I think it is a hack. anObject copy save should do. Norbert
