September 2020 - Pharo-users

[ANN] Next Pharo Sprint: Sept 25
by Marcus Denker Sept. 22, 2020

Sept. 22, 2020

We will organize a Pharo sprint / Moose dojo Sept 25 (this Friday) Goals of this sprint: - Fix issues from tracker https://github.com/pharo-project/pharo/issues This is a Remote Sprint, it happens on Discord. http://pharo.org/contribute-events We have added a Board to coordinate the work: https://github.com/orgs/pharo-project/projects/9 A list of all Pharo Event of the year an be found here: https://association.pharo.org/events

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where are the nills come from and how do I get rid of them
by Roelof Wobben Sept. 22, 2020

Sept. 22, 2020

Hello, I have to make a word count from a sentence so I did this : countWordsSentence: aString Â Â Â | splitted result | Â Â Â splitted := aString splitOn: [ :each | ', ' includes: each ]. Â Â Â result := splitted Â Â Â Â Â Â inject: Bag new Â Â Â Â Â Â into: [ :wordBag :word | Â Â Â Â Â Â Â Â Â wordBag Â Â Â Â Â Â Â Â Â Â Â Â add: word; Â Â Â Â Â Â Â Â Â Â Â Â yourself ]. Â Â Â ^ result valuesAndCounts but now I see that the Bag is containing nills. I tried to delete them by doing this :Â Â cleaned := result reject: [:each | each isNil] but to my surprise the nills are still there, Why is that happening and what is the best way to delete them ? Roelof

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UK Smalltalk User Group meeting - Wednesday, September 30th
by Giovanni Corriga Sept. 21, 2020

Sept. 21, 2020

The next meeting of the UK Smalltalk User Group will be on Wednesday, September 30th. For this meeting, Niall Ross and Vlad Degen from Cincom will present AppeX ( ), Cincomâs web application development framework. Together they will cover: - The advantages of the AppeX design philosophy - lightweight, plays well with others - How AppeX works in the Cincom Smalltalk IDE - The advantages of WYSIWYG AppeX JavaScript development through debugging of running AppeX applications - How you can use AppeX in the Cincom Smalltalk IDE to learn and improve your JavaScript, and to create and deploy JavaScript intensive modern web applications. - The advantages of AppeX web development, using the Chrome DevTools in conjunction with AppeX for debugging. Given the current COVID-19 restrictions, this will be an online meeting from home. If you'd like to join us, please sign up in advance on the meeting's Meetup page ( https://www.meetup.com/UKSTUG/events/cbklbrybcmbfc/ ) to receive the meeting details. Donât forget to bring your laptop and drinks!

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How to save a playground content in a local file ?
by Rene Paul Mages (ramix) Sept. 21, 2020

Sept. 21, 2020

Hello, To save the content of my playground (in my local hard disk) my procedure is really ~rustic~ { selection , copy , paste }. Is there an adhoc menu dedicated to this backup-action ? Nota Bene : I am working with Pharo 8.0.0 -- Thanks for your help. Rene Paul Mages ( GnuPG_key 0x9840A6F7 ) http://www.pharo.fr http://www.linux-azur.org/ramix http://twitter.com/RenePaulMages

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Telegram Bots with Pharo
by Pablo Navarro Sept. 21, 2020

Sept. 21, 2020

Hi everyone, I share a tool for creatingÂ telegramÂ Bots with Pharo. This library provides an interface for theÂ Telegram Bot API. To create our telegram bot in Pharo, the first thing we need to do is to create a new object that inherits from Bottlegram. This object must define at least these three methods: â¢ slashStart: to be executed when the bot receives /start. â¢ slashHelp: to be executed when the bot receives /help. â¢ defaultText: to be executed when the bot receives an unknown command. The tool allows creating bots using two methods: â¢ Using polling: the bot check updates for an amount of time. â¢ Using webhook: Use this method to create a Teapot server to receive incoming updates via an outgoing webhook. Whenever there is an update for the bot, we received an HTTPS POST request to the specified URL Github link:Â https://github.com/pablo1n7/bottlegram If you use Telegram, do you test an echo bot inÂ https://t.me/echo_pharo_bot Saludos, Pablo.

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[ANN] P3 version 1.3
by Sven Van Caekenberghe Sept. 21, 2020

Sept. 21, 2020

Hi, There is a new release of P3, the modern, lean and mean PostgreSQL client for Pharo. https://github.com/svenvc/P3 Version 1.3 contains the following changes: - Add object logging, see the P3LogEvent hierarchy - Added P3ConnectionPool with tests - Better management of prepared statements - Add support for Chronology objects Time, Date and DateAndTime to be used directly as binding arguments for formatted/prepared statements, with tests - Added basic support for array based parameter binding, see P3ValuesArray and #printValuesArrayOn: - Better documentation and fallback for session/connection timezone and character encoder/decoder - Reimplementation of P3Error adding unique codes and #isLocal as opposed to PostreSQL server generated messages; signalling now happens with instances created by class side accessors - Bring back P3Client>>#queryEncoding as an alias for P3Client>>#serverEncoding as compatibility support for PharoDatabaseAccessor - Add P3DatabaseDriver>>#connectSSL: - Various cleanups and internal improvements https://github.com/svenvc/P3/releases/tag/v1.3 The quality of open source software is determined by it being alive, supported and maintained. The first way to help is to simply use P3 in your projects and report back about your successes and the issues that you encounter. You can ask questions on the Pharo mailing lists. I want to thank all contributors and users for their help and feedback: you make a real difference. Since the end of last year, I have been using P3 in a real commercial production context, processing 10.000s of inserts a day and successfully supporting a web application for consulting the data. Enjoy, Sven -- Sven Van Caekenberghe Proudly supporting Pharo http://pharo.org http://association.pharo.org http://consortium.pharo.org

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roman numbers
by Roelof Wobben Sept. 19, 2020

Sept. 19, 2020

Hello, Can someone help me with a good plan to convert numbers to roman numbers. I could make a dictionary with 1,4,5,9,10,99,100, 999, 1000 but that feels like a overkill. Regards, Roelof

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CV/OCR Library
by Esteban Maringolo Sept. 18, 2020

Sept. 18, 2020

Hi, Does anybody know if there is an OCR or some CV library available for Pharo? I would like to make an experiment with recognizing the content of some fixed size form, and of course I prefer to do it with Smalltalk whenever possible. Regards! Esteban A. Maringolo

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order of execution
by Russ Whaley Sept. 18, 2020

Sept. 18, 2020

Can someone please explain this? I'm guessing I don't understand order of execution. When perusing >>fibonacciSequence, I get a proper result, but I don't understand why when looking at the code. Consider this fragment... prevTotal := 0. currTotal := 1. currTotal := prevTotal + (prevTotal := currTotal). My understanding *was* that parentheses are executed first. (prevTotal := currTotal) - assigns and returns 1 currTotal := prevTotal + (1) and since prevTotal = 1 currTotal := 1 + (1) prevTotal = 1. currTotal = 2. Yet what appears to be happening is... prevTotal = 0 currTotal := 0 + (prevTotal := currTotal) then the parentheses... currTotal := 0 + (1) prevTotal = 1. currTotal = 1. Care to school me? Thanks! Russ -- Russ Whaley whaley.russ(a)gmail.com

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[ANN] Hyperspace v2.1.0 [v2.1.0] released!
by Buenos Aires Smalltalk Sept. 17, 2020

Sept. 17, 2020

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