December 2019 - Pharo-users

Re: [Pharo-users] how can I this refractor this so its more smalltalk

by Ben Coman

Apart from using streams, part of making code less ugly is splitting it up its separate aaspects. One way it to to do as little as possible within your loop. See how Todd only does one thing within his loop. Apart from looking nicer, doing so improves how you "think" about the problem. cheers -ben On Tue, 17 Dec 2019 at 23:00, Roelof Wobben via Pharo-users < pharo-users(a)lists.pharo.org> wrote: > Hello, > > My solution to day2 part1 is right this : > > processData: instructions > | opcode index firstNumber secondNumber placeToPut firstNumberIndex > secondNumberIndex | > index := 1. > opcode := instructions at: index. > [ opcode ~= 99 ] > whileTrue: [ firstNumberIndex := instructions at: index + 1. > secondNumberIndex := instructions at: index + 2. > firstNumber := instructions at: firstNumberIndex + 1. > secondNumber := instructions at: secondNumberIndex + 1. > placeToPut := (instructions at: index + 3) + 1. > opcode == 1 > ifTrue: [ instructions at: placeToPut put: firstNumber > + secondNumber ]. > opcode == 2 > ifTrue: [ instructions at: placeToPut put: firstNumber > * secondNumber ]. > index := index + 4. > opcode := instructions at: index ]. > ^ instructions at: 1 > > so its ugly code > > is there a way I can this more the smalltalk way by using streams or > something else. > if so, is there someone who can tell me or can let me see how to make > this cleaner code > > Roelof > > >

Dec. 17, 2019

Re: [Pharo-users] [Pharo-dev] TaskIt

by Esteban Lorenzano

> On 17 Dec 2019, at 15:38, Torsten Bergmann <astares(a)gmx.de> wrote: > > Santiago wrote: >> What if we have links to all the groups in Pharo-project (pharo-misc, >> pharo-processing, pharo-robotics, pharo-web) ? I can do the firsts steps if >> we agree in here. > > Hi Santiago, > > yes - we should link the groups from the main "pharo-project" so they are easier to find. Here are the ones I know: > > 1. https://github.com/pharo-project > 2. https://github.com/pharo-contributions (general community managed contributions) > 3. https://github.com/pharo-rdbms (relational database support) > 4. https://github.com/pharo-nosql (NoSQL database support) > 5. https://github.com/pharo-sql (points to https://github.com/pharo-rdbms) > 6. https://github.com/pharo-robotics (Robotics related) > 7. https://github.com/pharo-brand (Brand Assets to do some marketing) > > > 8. https://github.com/pharo-db (looks like offical DB stuff, but created by Todd Blanchard to assemble some database projects) > > > Not existing (yet), dont know why you need/mentioned them > > https://github.com/pharo-misc > https://github.com/pharo-processing > https://github.com/pharo-we > > For TaskIt maybe you start in "pharo-contributions" and if Pharo has more projects in similar directions an own separate group > could be created. +1 > > I'm not sure if an own mailinglist other than "Pharo-users" makes sense but https://lists.pharo.org now also meanwhile got > an additional "Pharo-iot" and "Workflow-engine" mailinglist. > > Thanks > T. >

Dec. 17, 2019

Re: [Pharo-users] how can I this refractor this so its more smalltalk

by Todd Blanchard

Well my main run method looks like this: run | op | ram := self input. in := ReadStream on: ram. [ (op := in next) = 99 ] whileFalse: [ self processOpcode: op ]. ^self at: 0. ram is the array of integers. in is a ReadStream on them which lets me process them in order. They are both instance variables. self input provides a clean copy of the program memory (the integer array). I just used an array literal. No file IO. The main dispatch method is processOpcode: op op = 1 ifTrue: [ ^self processAdd ]. op = 2 ifTrue: [ ^self processMultiply ]. and for illustration processAdd | a b c | a := self at: in next. b := self at: in next. self at: in next put: a+b There are custom versions of at: and at:put: that compensate for zero based vs one based array indexing. at: idx ^ram at: idx + 1 I hope this helps you out. > On Dec 17, 2019, at 6:59 AM, Roelof Wobben via Pharo-users <pharo-users(a)lists.pharo.org> wrote: > > > From: Roelof Wobben <r.wobben(a)home.nl> > Subject: how can I this refractor this so its more smalltalk > Date: December 17, 2019 at 6:59:28 AM PST > To: Any question about pharo is welcome <pharo-users(a)lists.pharo.org> > > > Hello, > > My solution to day2 part1 is right this : > > processData: instructions > | opcode index firstNumber secondNumber placeToPut firstNumberIndex secondNumberIndex | > index := 1. > opcode := instructions at: index. > [ opcode ~= 99 ] > whileTrue: [ firstNumberIndex := instructions at: index + 1. > secondNumberIndex := instructions at: index + 2. > firstNumber := instructions at: firstNumberIndex + 1. > secondNumber := instructions at: secondNumberIndex + 1. > placeToPut := (instructions at: index + 3) + 1. > opcode == 1 > ifTrue: [ instructions at: placeToPut put: firstNumber + secondNumber ]. > opcode == 2 > ifTrue: [ instructions at: placeToPut put: firstNumber * secondNumber ]. > index := index + 4. > opcode := instructions at: index ]. > ^ instructions at: 1 > > so its ugly code > > is there a way I can this more the smalltalk way by using streams or something else. > if so, is there someone who can tell me or can let me see how to make this cleaner code > > Roelof > > > >

Dec. 17, 2019

Re: [Pharo-users] how can I this refractor this so its more smalltalk

by Roelof Wobben

Dec. 17, 2019

Re: [Pharo-users] how can I this refractor this so its more smalltalk

by Kasper Osterbye

Hi Roelof I saw your posts earlier, and will try to take a look. I am not into the advent of code myself, but love a good puzzle. Would it be possible to provide a link to the puzzle you are trying to solve?

Dec. 17, 2019

how can I this refractor this so its more smalltalk

by Roelof Wobben

Hello, My solution to day2 part1 is right this : processData: instructions Â Â Â | opcode index firstNumber secondNumber placeToPut firstNumberIndex secondNumberIndex | Â Â Â index := 1. Â Â Â opcode := instructions at: index. Â Â Â [ opcode ~= 99 ] Â Â Â Â Â Â whileTrue: [ firstNumberIndex := instructions at: index + 1. Â Â Â Â Â Â Â Â Â secondNumberIndex := instructions at: index + 2. Â Â Â Â Â Â Â Â Â firstNumber := instructions at: firstNumberIndex + 1. Â Â Â Â Â Â Â Â Â secondNumber := instructions at: secondNumberIndex + 1. Â Â Â Â Â Â Â Â Â placeToPut := (instructions at: index + 3) + 1. Â Â Â Â Â Â Â Â Â opcode == 1 Â Â Â Â Â Â Â Â Â Â Â Â ifTrue: [ instructions at: placeToPut put: firstNumber + secondNumber ]. Â Â Â Â Â Â Â Â Â opcode == 2 Â Â Â Â Â Â Â Â Â Â Â Â ifTrue: [ instructions at: placeToPut put: firstNumber * secondNumber ]. Â Â Â Â Â Â Â Â Â index := index + 4. Â Â Â Â Â Â Â Â Â opcode := instructions at: index ]. Â Â Â ^ instructions at: 1 so its ugly code is there a wayÂ I can this more the smalltalk way by using streams or something else. if so, is there someone who can tell me or can let me see how to make this cleaner code Roelof

Dec. 17, 2019

Re: [Pharo-users] [Pharo-dev] TaskIt

by Torsten Bergmann

Santiago wrote: >What if we have links to all the groups in Pharo-project (pharo-misc, >pharo-processing, pharo-robotics, pharo-web) ? I can do the firsts steps if >we agree in here. Hi Santiago, yes - we should link the groups from the main "pharo-project" so they are easier to find. Here are the ones I know: 1. https://github.com/pharo-project 2. https://github.com/pharo-contributions (general community managed contributions) 3. https://github.com/pharo-rdbms (relational database support) 4. https://github.com/pharo-nosql (NoSQL database support) 5. https://github.com/pharo-sql (points to https://github.com/pharo-rdbms) Â 6. https://github.com/pharo-robotics (Robotics related) 7. https://github.com/pharo-brand (Brand Assets to do some marketing) 8. https://github.com/pharo-db (looks like offical DB stuff, but created by Todd Blanchard to assemble some database projects) Not existing (yet), dont know why you need/mentioned them https://github.com/pharo-misc Â https://github.com/pharo-processingÂ https://github.com/pharo-we For TaskIt maybe you start in "pharo-contributions" and if Pharo has more projects in similar directions an own separate group could be created. I'm not sure if an own mailinglist other than "Pharo-users" makes sense but https://lists.pharo.org now also meanwhile got an additional "Pharo-iot" and "Workflow-engine" mailinglist. Thanks T.Â

Dec. 17, 2019

Re: [Pharo-users] Printer device communications

by Noury Bouraqadi

Hi Dario, I suggest you use socket stream and more specifically the ZdcSocketStream class. Socket is too low level, and web socket is for communications over HTTP. Noury > On 17 Dec 2019, at 13:20, dario.trussardi65 <dario.trussardi65(a)gmail.com> wrote: > > Ciao, > > i have to manage bidirectional communications with a printing device. > > > For now from Pharo i open a TCP-IP connection on the device that acts as a server. > > So from the program ( client ) i manage the synchronous transmission and reception > > of the various commands to the device and everything is ok. > > At this point it remains for me to manage - intercept on the client (Pharo) > > the asynchronous transmission of commands by the server ( for example: the end of paper notification from the device ) > > How can i handle this? > > At which level do you advise me to work? ( socket - socketStream - websocket - ....... ..... ) > > Any advice on this? > > Thank, > > Dario

Dec. 17, 2019

Printer device communications

by dario.trussardi65

Ciao, i have to manage bidirectional communications with a printing device. For now from Pharo i open a TCP-IP connection on the device that acts as a server. So from the program ( client ) i manage the synchronous transmission and reception of the various commands to the device and everything is ok. At this point it remains for me to manage - intercept on the client (Pharo) the asynchronous transmission of commands by the server ( for example: the end of paper notification from the device ) How can i handle this? At which level do you advise me to work? ( socket - socketStream - websocket - ....... ..... ) Any advice on this? Thank, Dario

Dec. 17, 2019

Pharo TechTalk December 19th

by Marcus Denker

A regular chat about Pharo. Topic: âWorking with Spec2 and GTKâ https://association.pharo.org/event-3419547 There is a Discord channel where everything else will be organised (e.g. youtube life streaming if needed).

Dec. 17, 2019