February 2019 - Pharo-users

Why is #findString: in accessing?
by Tim Mackinnon Feb. 28, 2019

Feb. 28, 2019

I always struggle (even after years of casually using smalltalk) to find the String methods that do the heavy lifting (and are comparable to other languages). The methods are normally there, but they often have names that donât compare well with other languages. I think that what doesnât help is the categorisation of methods in String - for example - if I want to do some searching in a String - why is #findString: in âaccessingâ - I totally didnât think to look in there. To be honest, I really wanted a protocol called âsearchingâ - but its not there? I find the protocols in the system to be pretty bad in all honesty. Its a good idea, but I donât think its clear on whether its protocol, or category. And if the former - where are the tools to help ensure things conform to a protocol? If the latter - where are the useful, commonly used categories? Are there any plans to do anything in this area - or is it just a lump it scenario? Tim

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Repeateble URLs - REST?
by sergio ruiz Feb. 28, 2019

Feb. 28, 2019

Hi, all.. I am looking to have a repeatable url so users can save them and share them.. something like: www.bagelconcertfinder.com/zipcode/44805 and in my next project, Iâll be doing something like a CMS where you would get: /blog_entries/this-is-the-path I am thinking of using REST to flesh out the paths.. does this seem reasonable? ---- peace, sergio photographer, journalist, visionary Public Key: http://bit.ly/29z9fG0 #BitMessage BM-NBaswViL21xqgg9STRJjaJaUoyiNe2dV http://www.codeandmusic.com http://www.twitter.com/sergio_101 http://www.facebook.com/sergio101

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JSON keys not quoted?
by Esteban Maringolo Feb. 28, 2019

Feb. 28, 2019

If you convert a Dictionary with numbers as keys it will produce not valid JSON [1], since all object keys must be quoted. E.g. NeoJSONWriter toString: (Dictionary with: 1->'foo'). or (Dictionary with: 1->'foo') asJson Should the library generate quoted keys? Seaside's WAJsonCanvas is manual, so it is up to the developer to render the object properly, but NeoJSON does it automatically. In Javascript this will throw a syntax error: > JSON.parse('{1: "foo"}') And this would generate a quoted key when serialized: > JSON.stringify({1: "foo"}) > {"1": "foo"} So my question is: should the library quote whatever you put as key in order to produce valid JSON syntax? [2] Regards. [1] https://jsonlint.com/ [2] https://www.ecma-international.org/publications/standards/Ecma-404.htm Esteban A. Maringolo

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Teapot or Zinc adding extra node to JSON POST
by BrunoBB Feb. 27, 2019

Feb. 27, 2019

Hi, Using Teapot (which uses Zinc) i found something i do not know if it is a standard or done on purpose or a bug. A Teapot service (POST) accept a JSON entry. In the client the 'body' is set with the JSON. In the server the ZnRequest contents insert a JSON node 'body' to the original JSON. The original JSON POST is: {name: "John", age: 31, city: "New York"} At server ZnRequest contents JSON is: {"body":{name: "John", age: 31, city: "New York"}} Is this done on purpose by Zinc ? I try to find if it is a standard in JSON communications but with no luck yet ! (these are first steps on JSON so maybe is a newbie question :) regards, bruno -- Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html

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Pharo consortium selected for GSOC 2019
by Serge Stinckwich Feb. 27, 2019

Feb. 27, 2019

Dear all, Pharo Consortium has been selected this year as a Google Summer of Code 2019 mentor organization. This is the first time since 2017. I would like to thank other GSOC co-admin Jigyasa Grover and Oleksandr Zaytsev for their commitment and hard work, Peter Uhnak for his help for the website, Alexandre Bergel, Yuriy Tymchuk and StÃ©phane Ducasse for their interactions. We will prepare the call for students soon. We have already a website with a list of subject: http://gsoc.pharo.org/ More subjects can be added, but we will focus on topics that will have the bigger impact on the Pharo community. We will use the #gsoc-planning channel on Discord to discuss. If you have students that might be interested, please let them know about this opportunity. There is #gsoc-students channel for them. Regards, -- Serge Stinckwic h Int. Research Unit on Modelling/Simulation of Complex Systems (UMMISCO) Sorbonne University (SU) French National Research Institute for Sustainable Development (IRD) U niversity of YaoundÃ© I, Cameroun "Programs must be written for people to read, and only incidentally for machines to execute." https://twitter.com/SergeStinckwich

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NeoJSON mapping question
by BrunoBB Feb. 27, 2019

Feb. 27, 2019

Hi, How to set a path to JSON value in the mapping definition ? I mean i have a simple object with and instance variable but the value of this inst var is deep inside the JSON. mapping mapInstVar: #locator to: 'locator'. This fail because 'locator' is not in the first JSON level. Is possible to do something like: mapping mapInstVar: #locator to: 'booking.vars.locator'. I already tried and fail. But i was not able to find something similar. regards, bruno -- Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html

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The confusing state of SUnit
by Tim Mackinnon Feb. 27, 2019

Feb. 27, 2019

Forgive me father, for I have sinnedâ¦ but when I try to right good tests, that fail in a way I can understand them it seems that SUnit doesnât want to help meâ¦ Maybe I am missing something, but in 2019 it should be easy to write tests - particularly when we want people to contribute to adding more? So when I want to right a test to assure that Iâve thrown an exception with the right message, why is it so hard (in the core image)? Am I missing something obvious? My example model is supposed to throw a DomainException with a message indicating that the strings :are of different lengthsâ - I search Sunit and hit: #should: raise: whoseDescriptionDoesNotInclude: description: Awesome, so it fails - but does it make it easy to know what damn string I gotâ¦.. nooooo that would be too easy? Its almost impossible to easily see what happened the way it works. Instead I have to write: self should: [ hammingCalculator distanceStrand1: 'AATG' strand2: 'AAA' ] raise: DomainError withExceptionDo: [ :ex | self assert: ex messageText equals: 'left and right strands must be of equal length' ]. And god forbid if I want to just ensure that the beginning of my error message is correct? Why do we make this so hard? I know we donât want to pollute the image, but testing is important, it should be easy for obvious cases and it should be more built in and less obscure. Is there something built in that makes this easier? Do I really have to load in more libraries for the easy cases? Tim

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[Parsing XML] Error calling Shout
by sergio ruiz Feb. 26, 2019

Feb. 26, 2019

Hi, all. I am currently using the AWS S3 plugin to get a list of buckets available. This call sends back a pile of XML.. The XML is coming back valid, but I am getting back something like: XMLDocumentHighlightDefaults errorâ¦. and inside this error, SHTextStylerST80 new <- where ânewâ is being sent to nil.. It looks like SHTextStylerST80 is part of the Shout package, but I cannot get shout to install on 7.01.. anyone have any ideas? Thanks! ---- peace, sergio photographer, journalist, visionary Public Key: http://bit.ly/29z9fG0 #BitMessage BM-NBaswViL21xqgg9STRJjaJaUoyiNe2dV http://www.codeandmusic.com http://www.twitter.com/sergio_101 http://www.facebook.com/sergio101

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Voyage for Pharo 7
by sergio ruiz Feb. 26, 2019

Feb. 26, 2019

Is the installation for this set up somewhere? I am using the metacello script here: https://github.com/pharo-nosql/voyage and the catalog.. and am getting errors everywhere. Thanks! ---- peace, sergio photographer, journalist, visionary Public Key: http://bit.ly/29z9fG0 #BitMessage BM-NBaswViL21xqgg9STRJjaJaUoyiNe2dV http://www.codeandmusic.com http://www.twitter.com/sergio_101 http://www.facebook.com/sergio101

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Windows 64bit, long filename issue but after a second load, how to categorise and report this?
by Tim Mackinnon Feb. 26, 2019

Feb. 26, 2019

We noticed a weird problem when testing the pharo exercism project. When loading on Windows10 in a fresh 64bit image with the following evaluate in the playground: Metacello new baseline: 'Exercism'; repository: 'github://exercism/pharo-smalltalk:master/dev/src'; load. The project seemed to load correctly (but we seemed to hit an issue with an http submit giving a 404 error - which weirdly works in 32bit and OSX 64/32). Anyway - the real question here is that when trying to reproduce this in a second fresh 64bit image 2 users now have reported getting the long filename error: LGit_GIT_EEXISTS: Failed to stat file 'C:/Users/sam/Documents/Pharo/images/exercism-test-run-7.0-32...stance/testRaiseUnexpectedMessageWhenTooMuchMessages.st': The filename or extension is too long. And the second user got the same but with a different filename: ruleRBUtlitiesMethodsRuleV1FalsePositve.st I know there is a long standing problem with Windows and file path lengths - but why would it work the first time and then subsequently fail in fresh installs? Is something being cached on windows that isnât on other platforms? (Writing this - Iâm wondering if there is that shared pharo Iceberg setting for Share repos that might be implicated?) Also - given Exercism is in Tonel format and those files arenât in exercism, and in fact Iâm struggling to find where they are defined (my images donât have them) - there is something very weird going on. I wonder if we have another error that is masking all of this? Ultimately my question is - where is the Pharo issue that is tracking this problem? Iâve seen it mentioned lots of times here, but canât see anything in the issues that I can tack the above onto? For reference - our exercism issue is: https://github.com/exercism/pharo-smalltalk/issues/140 Tim

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