July 2017 - Pharo-users - lists.pharo.org

Performance of zero conf install since 6.1 seems very slow?
by Tim Mackinnon July 31, 2017

July 31, 2017

Hi - has anyone else noticed that since 6.1 - using zero conf for installs is very very slow (it takes minutes to download pharo64.zip when using curl get.pharo.org/64/ | bash This is both on my local computer but also on the gitlab ci server? Is it possibly something isnât configured right? Tim

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How to export critics from Critic Browser?
by HernÃ¡n Morales Durand July 31, 2017

July 31, 2017

Hi, I'm using Pharo 6.1 and I want to export a report of Critics Browser results. Is there a way to save the results? It would be nice to have a CSV, to record historical analysis of my progress, then plot using Roassal, etc. Cheers, HernÃ¡n

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Threads safety in Pharo
by Alidra Abdelghani July 30, 2017

July 30, 2017

Hi, Somebody once evoked the problem of threads safety in Pharo. With a friend of mine who is expert in formal methods and process scheduling, we would like to have a look on it. Does anyone knows a good document describing the problem of Pharo with threads safety or at least any document that we can start with? Thanks in advance, Abdelghani

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Pharo Seaside RESTful services pragma question
by Greg Hutchinson July 30, 2017

July 30, 2017

I am new to Pharo/Seaside and it has been a long time since I have used Smalltalk. I am trying to make a RESTful service and canât get the pragmas to work the way I think it should. (This might be the problem already). Ie Here is my list method within class TeamMembers which is a direct subclass of WARestfulHandler. list <get> ^ String streamContents: [ :stream | self teamMembers do: [ :each | stream nextPutAll: each ; crlf ] ] and listJson <get> <produces: 'text/json'> ^ (Array streamContents: [ :stream | self teamMembers do: [ :each | stream nextPut: (Dictionary new at: 'name' put: each ; yourself) ] ]) asJavascript After doing all the proper registration WAAdmin register: TeamMembers at: 'team-members' when I execute in the browser ( http://localhost:8080/team-members) I received the message /team-members not found but if I execute (http://localhost:8080/team-members/list) it brings back the team member list. (However, I didnât think I would have to add /list to the URL). This seems to contradict the documentation in http://book.seaside.st/book/advanced/restful/getting-started/define-handler. However, If I override the TeamMembers>> createRoutes | route pType| pType := WAFullMimeTypeMatch main:'text' sub: 'json' . route := WASimpleRoute method: 'GET' selector: #listJson produces: pType consumes: WAWildcardMimeTypeMatch new. ^ OrderedCollection new "GET" add: route; add: (WARoute get: #list); yourself. Then I get the expected behaviour when I browse to ( http://localhost:8080/team-members) and using curl. (ie. curl -H "Accept: text/json" http://localhost:8080/team-members to get the Json response. When I debug the difference in the routes, it looks like using the pragmas, I get WAComplexRoute(s) but of course in the overridden method createRoutes, I get WASimpleRoutes. Is this the way it is supposed to work? Thanks in advance for any hints.

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Re: [Pharo-users] [Pharo-dev] [ANN] Pharo 6.1 (summer) released!
by Esteban Lorenzano July 30, 2017

July 30, 2017

> On 25 Jul 2017, at 17:29, Hilaire <hilaire(a)drgeo.eu> wrote: > > As the P6.1 change log is not complete enough I have to try out to discover: > > - fix for PNG regression is included > > - the Athen Wrap regression is still present :( > is very complete. Is just that it does not has so many changes :) this was a version we told it was going to be made available to update iceberg (as we use iceberg for develop P7, we need to have recurrent updates even in Pharo 6). And since there was important modifications, we needed to change the backend library. And since we changed the backend library, we needed to change the vm. Finally, since we changed the VM, we were unable to apply this update as a âhot-fixâ (what we do regularly, but version number does not change, just build number). So, Pharo 6.1 is exactly the same as before, but with: new iceberg, new vm, new backend library. cheers! Esteban ps: the other regressions, when fixed, can be applied as we usual apply backported hot-fixes. > > Le 25/07/2017 Ã 08:59, Hilaire a Ã©crit : >> Meaning these tow ones ? >> >> http://forum.world.st/Regression-with-PNGReaderWriter-in-P6-td4951796.html#… <http://forum.world.st/Regression-with-PNGReaderWriter-in-P6-td4951796.html#…> >> http://forum.world.st/WrapAthen-World-coordinate-td4951750.html#a4951966 <http://forum.world.st/WrapAthen-World-coordinate-td4951750.html#a4951966> > -- > Dr. Geo > http://drgeo.eu <http://drgeo.eu/>

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STON question
by Stephane Ducasse July 30, 2017

July 30, 2017

Hi sven I'm coding with my son a game collector application :) We want to save our collection with STON So far we have GameCollector asSTON >> String streamContents: [ :s | STON put: self onStreamPretty: s ] and we get GameCollector { #items : OrderedCollection [ GameItem { #name : 'Final Fantasy X', #console : #PS2, #hasDocumentation : false, #hasBox : true, #finished : true, #condition : 'Good', #quotation : 10, #critics : 18, #comments : 'quite cool in fact' }, GameItem { #name : 'Final Fantasy XII', #console : '', #hasDocumentation : true, #hasBox : false, #finished : false, #condition : 'Good', #quotation : 10, #critics : 15, #comments : '' } ] } And this is good. Now I wanted to use STON to save the items without the class structure to get something like OrderedCollection [ GameItem { #name : 'Final Fantasy X', #console : #PS2, #hasDocumentation : false, #hasBox : true, #finished : true, #condition : 'Good', #quotation : 10, #critics : 18, #comments : 'quite cool in fact' }, GameItem { #name : 'Final Fantasy XII', #console : '', #hasDocumentation : true, #hasBox : false, #finished : false, #condition : 'Good', #quotation : 10, #critics : 15, #comments : '' } ] I coded as GameCollector >> asSTON ^ String streamContents: [ :s | STON put: items onStreamPretty: s ] and STON is not happy on reload. I know that we are bending the rules. Is there a way to do simply what I want? I could leave also with GameItem { #name : 'Final Fantasy X', #console : #PS2, #hasDocumentation : false, #hasBox : true, #finished : true, #condition : 'Good', #quotation : 10, #critics : 18, #comments : 'quite cool in fact' }, GameItem { #name : 'Final Fantasy XII', #console : '', #hasDocumentation : true, #hasBox : false, #finished : false, #condition : 'Good', #quotation : 10, #critics : 15, #comments : '' } Stef

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NeoJSON "conditional" parsing/mapping
by Esteban A. Maringolo July 30, 2017

July 30, 2017

Hi Sven, all, I'm working on a JSON-RPC client, I started using LtJsonRpcClient, but since it's based on the "legacy" JSON package I decided to try to adapt it to use NeoJSON. So I created a NeoJSONRPCClient based on LtJson... because... why not. At its core JSON-RPC is a pretty simple protocol, every response is a JSON object with a 'result' attribute holding the returned object from the RPC call, an 'error' one (nil if no error happened), and a few other ones [1]. If I convert the response using the traditional `NeoJSONReader fromString: responseObject` all the object three is converted to a Dictionary, and what I want is to be able to: 1. Determine whether there was an error in the response 2. If there was no error, convert the 'result' field to my preferred class of object instead of a Dictionary. I plan to make my classes inherit from NeoJSONObject though. All the above to avoid the use of an intermediate set of nested dictionaries (which could be in the thousands). I understand I could subclass NeoJSONReader to perform that at the character stream level, but I wanted to ask first whether there is a pattern/configuration of dealing with something like this. Best regards! [1] http://www.jsonrpc.org/specification#response_object Esteban A. Maringolo

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Re: [Pharo-users] Looking for small boards and tiny computers which can run Pharo
by Bruce O'Neel July 30, 2017

July 30, 2017

Hi, With a bit of work it probably fits on one of these: [https://onion.io/omega2/](https://onion.io/omega2/) If you feel on really wasting space this would work as well, though it would need some porting if you wanted to run it locally. [https://getchip.com/pages/pocketchip](https://getchip.com/pages/pocketchip) If you don't want the display and keyboard and want to run it remote this will work then, it's the CPU from the above. [https://getchip.com/pages/chip](https://getchip.com/pages/chip) If I get some free time I can poke at these and see how well Squeak etc runs. cheers bruce > Hi, > i am looking for: > - small hardware, boards/computers, "embeddable" devices, etc. that can run Pharo (except Raspberry pi that i already know) > - robots, flying drones or things alike with an open linux which can possibly run Pharo > Could somebody points me to documentation or web sites where such things can be found ? > Thanks, > Steven.

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Pharo launcher on Linux Mint
by Sebastian Heidbrink July 30, 2017

July 30, 2017

Hi! I used Pharo launcher on Windows and Ubuntu before and never had any troubles. Now, I am trying to used it on Linux Mint without success. Once I start the freshly created image the appropriate VM is downloaded but the image is not started. A PharoDebug.log is created in the image folder complaining that it can't find the PharoVXX.sources files in the "pharo/bin/lib/pharo/5.0-201707201942" folder. After I copy the missing file into that folder the image is still not opened and no further logs are created or updated. A downloaded Pharo.zip from the Pharo website opens just fine. Is this a known issue? Thank you! Sebastian

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Critical issues for Dr. Geo on P6
by Hilaire July 30, 2017

July 30, 2017

Hello people, Here are a few critical issues due to bugs or lack of information or feature for porting Dr. Geo to P6. There were others critical issues from P6 but were resolved and will be hopefully integrated, when ? * Minimal Dr. Geo image <https://bugs.launchpad.net/bugs/1705661> * Integration with Playground <https://bugs.launchpad.net/bugs/1701460> * Export bitmap to clipboard <https://bugs.launchpad.net/bugs/1697418><-- it will be really cool to have. <https://bugs.launchpad.net/bugs/1697418> * Universal package for 64 bits <https://bugs.launchpad.net/bugs/1705668> Other issues: https://launchpad.net/drgeo/+milestone/17.09 My initial plane and need is to finish the porting and test by the end of August. Not sure it sounds realistic. Hilaire -- Dr. Geo http://drgeo.eu

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