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

Zink geo location data reading
by bachitoph June 16, 2017

June 16, 2017

Hi, I'm playing around with Zink reading the geo location of any IP-address. Evaluating the code below in a playground works fine. But what is the best way to read the entity data of the ZnResponse instance I get back. Have I to parse it, with an self written parser, or is there anything available. |client znResponse location| client := ZnClient new. client host: 'www.geoplugin.net'. client addPathSegment: 'php.gp'. client queryAt: 'ip' put: '188.194.228.195'. znResponse := client get; response. The code should anyhow look like this. AnyParser parse: (ReadStream on: znResponse contents). In PHP the example code is at http://www.geoplugin.com/webservices/php var_export(unserialize(file_get_contents('http://www.geoplugin.net/php.gp?ip=188.194.228.195] I'm searching for the unserialize of the php, which delivers an array with key value pairs. The response entity contents looks somehow like the bottom string without the newlines. 'a:18:{ s:17:"geoplugin_request";s:15:"188.194.228.195"; s:16:"geoplugin_status";i:200; s:16:"geoplugin_credit";s:145:"Some of the returned data includes GeoLite data created by MaxMind, available from http://www.maxmind.com <\'http://www.maxmind.com\'> ."; s:14:"geoplugin_city";s:6:"Passau"; s:16:"geoplugin_region";s:7:"Bavaria"; s:18:"geoplugin_areaCode";s:1:"0"; s:17:"geoplugin_dmaCode";s:1:"0"; s:21:"geoplugin_countryCode";s:2:"DE"; s:21:"geoplugin_countryName";s:7:"Germany"; s:23:"geoplugin_continentCode";s:2:"EU"; s:18:"geoplugin_latitude";s:7:"48.5833"; s:19:"geoplugin_longitude";s:7:"13.4833"; s:20:"geoplugin_regionCode";s:2:"02"; s:20:"geoplugin_regionName";s:7:"Bavaria"; s:22:"geoplugin_currencyCode";s:3:"EUR"; s:24:"geoplugin_currencySymbol";s:7:"€"; s:29:"geoplugin_currencySymbol_UTF8";s:3:"â¬"; s:27:"geoplugin_currencyConverter";s:6:"0.9348";}' Thanks for any help cjb -- View this message in context: http://forum.world.st/Zink-geo-location-data-reading-tp4951446.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

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About how to benchmark the lookup speed...
by Steven Costiou June 15, 2017

June 15, 2017

Hi, i'm having trouble doing benchmarks in Pharo, at least i don't understand the results (maybe i'm missing something). I want to compare anonymous subclasses lookup speed with standard pharo classes lookup speed. I have a method m and a method m2 that execute the following code: ^ 100 printString. I have implemented these 2 methods in one class then in one anonymous subclass. I thought that measuring the execution speed of the same code in these two different cases would give me different times if the lookup speed was not the same. So I did the following: |o results repetitions | o := theClass new. results := OrderedCollection new. repetitions := 100. repetitions timesRepeat:[ results add: [1000000 timesRepeat:[o m]] timeToRun]. I do the same for m2, and then i compute an average of all the values measured in results. What i don't understand is that, for example, for an average on 100 measurements, m is 1% slower and m2 is 2% faster in the Pharo class case than with anonymous subclasses. But for 1 000 measurements, m is 11% faster but m2 is 3% slower. Results continue to vary as i change the number of measurements, but they do not increase with it (seems not to be linear). I don't have enough knowledge about how to benchmark code, or what will make a difference in Pharo. For now the only explanations i have is that maybe the results are too slow to be significant and then they can vary, or i have done something wrong in how i measure it. How would you measure the lookup speed of a method ? Steven.

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Pharo in a read-only environment survey
by JÃ©rÃ©mie Regnault June 15, 2017

June 15, 2017

Hi, I'm working on Pharo deployment in a read-only environment, and I want to know what behavior you want Pharo to adopt. If you could take 5 minutes to fill the survey, it would be nice : https://goo.gl/forms/8S7w4079NDfBrsVu1 Thank you, <https://goo.gl/forms/8S7w4079NDfBrsVu1> -- JÃ©rÃ©mie Regnault

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Metacello / Iceberg flags
by Alistair Grant June 15, 2017

June 15, 2017

Hi All, I'm sure I saw a message on this list (maybe pharo-dev) that specified a flag that will cause github repositories loaded through Metacello to be automatically added to Iceberg. My memory is that it was on prior to the Pharo 6 release, and turned off just before the release. I've searched through the mailing list archives, but haven't been able to find it. Can someone kindly help my failing memory? Thanks, Alistair

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[ARTICLE] Quick write me a Redis client
by Sven Van Caekenberghe June 15, 2017

June 15, 2017

Hi, I wrote another article in the 'Concerning Pharo' publication: [TITLE] Quick write me a Redis client [SUBTITLE] A beautiful protocol makes implementation easy [URL] https://medium.com/concerning-pharo/quick-write-me-a-redis-client-5fbe4ddfb… [SOURCECODE] https://github.com/svenvc/SimpleRedisClient Sven -- Sven Van Caekenberghe Proudly supporting Pharo http://pharo.org http://association.pharo.org http://consortium.pharo.org

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Help in thinking about how to save a "program"
by Glenn Hoetker June 14, 2017

June 14, 2017

Hi all. Iâm new to Pharo and loving it. As I transition from a text-file based mindset, Iâm a little stuck and would appreciate help in how to think about a situation in a Pharonic (Pharo-ish, Pharoc?) way. Iâm crafting a short program to help me process a large text file (specifically: extract, sorting, and regularizing the âkeywordâ fields of a large BibTex file). Especially since I donât really know what Iâm doing, working in a Playground has been a great development environment. Now that the program is complete (under 30 lines, wonderful), I want to be able to save it for future reference (and perhaps for future use). If Iâd written a shell script, Iâd just save âfixBibDeskKeyWords.shâ to a directory. Iâm not sure what to do in the Pharo environment, thought. At the moment, it just lives in the Playground Iâve developed it on. I could save the image and leave that Playground open, but Iâm just positive thatâs not a best practice. I also worry about what happens if I closed/cleared that Playground by accident. I think I understand that, if I created a new package, I could use Monticello to save it to a local cache and load it into a new image whenever I needed it. But, given that itâs short, highly specialized and fairly linear, the idea of creating a âGHBibDeskStuffâ package with one class (âGBibDeskKeywordFixerâ containing a single âFixFileâ method seems really heavy and awkward. Can one save the contents of a Playground in a Pharonic way? Is there a better approach? Thank you to all involved in this wonderful programming ecosystem. I appreciate any advice. Glenn Glenn Hoetker ghoetker(a)me.com <mailto:ghoetker@me.com> http://hoetker.faculty.asu.edu <http://hoetker.faculty.asu.edu/>

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I want to get in contact with raphael luque from madrid :)
by Stephane Ducasse June 14, 2017

June 14, 2017

Hi guys. I tried to get in contact with raphael but my emails do not seem to go to destination. Do you have the email of raph/fael luque from madrid? Stef

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Re: [Pharo-users] STON Question
by Guillermo Polito June 14, 2017

June 14, 2017

That's what we call a DTO On Wed, Jun 14, 2017 at 3:01 PM, Christophe Demarey < christophe.demarey(a)inria.fr> wrote: > +1 > It is exactly what i've done with Cargo. Define your own specific object > for serialization / deserialization. It is the simplest way to have a human > readable conf file (e.g. urls, pathes default serialization is not what you > expect) > > Christophe > ----- Sven Van Caekenberghe <sven(a)stfx.eu> a Ã©crit : > > STON cannot be used to write partial, manual output because it needs to > see the full object graph (like FUEL does). > > > > If I would want to use STON for prettier looking config files, I would > make an object just for that external representation, converting it where > necessary to better internal objects (like from String to FileReference). > > > > > On 5 Jun 2017, at 08:58, Stephane Ducasse <stepharo.self(a)gmail.com> > wrote: > > > > > > Sven I know what Ston is :) > > > > > > Now Pillar dev used Ston as input and it works. Then with some hooks > they let the user convert the strings > > > into specific objects and this is ok. > > > Now I want to add export in Ston and for configurations I need to > control for the application and not as a ston object the value saved. > > > For example a file reference should not be just a file reference in > Ston but > > > a string relative the the baseDirectory of the configuration. > > > > > > So I thought that I can build a hook and control the call to Ston > (convert the object before to the correct values) and export. > > > It should be working now doing this I found myself redoing the output > of Ston. > > > So I will do it. Then I thought that may be I could reuse this logic. > > > > > > Stef > > > > > > > > > > > > On Sun, Jun 4, 2017 at 11:49 PM, Sven Van Caekenberghe <sven(a)stfx.eu> > wrote: > > > Stef, > > > > > > STON is like FUEL, it can write any object to a stream and read it > back. Although you can customise how this is done, only one way of doing so > is supported (i.e. you cannot change the format for each application). > > > > > > People have used STON for various applications now, including for > configuration stuff (because it is a textual format that is easy to read). > > > > > > I would suggest you just try to see what your config looks like once > you have the objects in Pharo. > > > > > > STON toStringPretty: myConfig. > > > > > > Then we can see how to tune the representation. > > > > > > Sven > > > > > > > On 4 Jun 2017, at 22:58, Stephane Ducasse <stepharo.self(a)gmail.com> > wrote: > > > > > > > > Hi sven > > > > > > > > I'm working on a new configuration frameworks similar to the one use > pillar.conf. > > > > > > > > So basically I have > > > > > > > > ston := '{ > > > > "newLine":#unix, > > > > "separateOutputFiles":true > > > > }'. > > > > and I want to recreate it. > > > > > > > > So I did > > > > > > > > Object >> toConfigurationString > > > > > > > > ^ STON toString: self > > > > > > > > SimpleConfiguration >> exportStream > > > > > > > > ^ String streamContents: [ :str | > > > > str << '{' . > > > > self propertiesKeysAndValuesDo: [ :key :value| > > > > str << key toConfigurationString. > > > > str << ':'. > > > > str << value toConfigurationString. > > > > str << ','. > > > > str lf. > > > > ]. > > > > str << '}'. > > > > str contents > > > > ] > > > > > > > > The idea is that for special configuration values people should be > able to define > > > > how to go from the object to configuration. > > > > For example for some FileReference I want to have just the path up > to the baseDirectory. > > > > > > > > Now I wonder if I could not better reuse ston. > > > > I saw the stonOn: > > > > but I did not look further because I was wondering how the writer > where passed. > > > > > > > > Any feedback is welcome. > > > > > > > > Stef (now bed time). > > > > > > > > > > > > > > > > > > > > -- Guille Polito Research Engineer French National Center for Scientific Research - *http://www.cnrs.fr* <http://www.cnrs.fr> *Web:* *http://guillep.github.io* <http://guillep.github.io> *Phone: *+33 06 52 70 66 13

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STON Question
by Stephane Ducasse June 14, 2017

June 14, 2017

Hi sven I'm working on a new configuration frameworks similar to the one use pillar.conf. So basically I have ston := '{ "newLine":#unix, "separateOutputFiles":true }'. and I want to recreate it. So I did Object >> toConfigurationString ^ STON toString: self SimpleConfiguration >> exportStream ^ String streamContents: [ :str | str << '{' . self propertiesKeysAndValuesDo: [ :key :value| str << key toConfigurationString. str << ':'. str << value toConfigurationString. str << ','. str lf. ]. str << '}'. str contents ] The idea is that for special configuration values people should be able to define how to go from the object to configuration. For example for some FileReference I want to have just the path up to the baseDirectory. Now I wonder if I could not better reuse ston. I saw the stonOn: but I did not look further because I was wondering how the writer where passed. Any feedback is welcome. Stef (now bed time).

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How to use frameworks like SDL2, GTK+ with Pharo?
by Daniel Passaro June 14, 2017

June 14, 2017

I'm a Pharo newbie. How can I use libraries like SDL2 or GTK+ from Pharo? Should this be done through FFI or a VM plugin? And in either case is there a guide to how to implement things using that technique?

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