March 2015 - Pharo-users - lists.pharo.org

Re: [Pharo-users] GRNumberPrinter

by Sven Van Caekenberghe

According to GRPrinterTest>>#testIntegerPrinter this is expected behaviour ;-) There is also a GRSignPrinter, but since there are no class comments ... > On 25 Mar 2015, at 20:14, Cameron Sanders via Pharo-users <pharo-users(a)lists.pharo.org> wrote: > > > Date: 25 Mar 2015 20:13:59 CET > Subject: GRNumberPrinter > From: Cameron Sanders <camsanders(a)aol.com> > To: Any question about pharo is welcome <pharo-users(a)lists.pharo.org> > > > > What am i doing wrong here with my usage? > > (GRNumberPrinter new separator: $,; precision: 2; yourself) > print: -300. > > when inspected i get '300.00'. > > Thanks in advance. > > -Cam > >

March 25, 2015

GRNumberPrinter

by Cameron Sanders

What am i doing wrong here with my usage? (GRNumberPrinter new separator: $,; precision: 2; yourself) print: -300. when inspected i get '300.00'. Thanks in advance. -Cam

March 25, 2015

Re: [Pharo-users] USB in Pharo?

by stepharo

Le 24/3/15 15:58, Udo Schneider a Ã©crit : > I guess not :-) > > I'll try to wrap libUSB then. > > I assume the future-proof way to use "a" FFI framework is to use the > NB notation? Do I remember correctly that the NB notation is supposed > to remain the same although the backend will change to something more > like traditional FFI? Yes > So using NB notation w/o relying on the code generation is safe, correct? Yes! > > CU, > > Udo > > > On 23.03.2015 16:15, Udo Schneider wrote: >> All, >> >> does anybody have some code or plugin to access USB ports with Pharo? >> Maybe something using libUSB or OpenUSB? >> >> Thanks, >> >> Udo >> >> >> > > > >

March 25, 2015

Re: [Pharo-users] Collection with memory?

by stepharo

Le 25/3/15 09:32, Sven Van Caekenberghe a Ã©crit : > OK, I get your point now, #read and #read: are a better combination than #get and #read: > > About #++ and friends, yes I think they are so uncommon that they do not warrant a special selector, what is the point ? do not let creep in bad ideas! I can tell you from a dyslexic point of view i++ ++i and all cryptic things that makes a programmer feels like a real men is not fun. Let us use them carefully not as "look mum I can do it" Stef >> On 25 Mar 2015, at 09:12, stepharo <stepharo(a)free.fr> wrote: >> >>> Stef, >>> >>> Like Denis said, there is no #next: in Xtreams, AFIACT. >> Yes but this is the same >> we should get read and read: and not get and read: >> This is my point. >>> There are >>> >>> XTReadStream>>#get >>> "Read an object from self. >>> If there aren't any elements left in the stream, the Incomplete exception is raised." >>> >>> and >>> >>> XTReadStream>>#read: anInteger >>> "Read anInteger's worth of elements from self and return them in a collection. >>> If full anInteger number of elements cannot be read from the source, the Incomplete exception is raised." >>> >>> Like I said, these selector names were chosen to prevent confusion, on purpose. I think that is good. I also think that a lot of though went into the design. >> I personally think that >> get and read: are bad and irregular. >> >> XTReadStream>>#read >> "Read an object from self. >> If there aren't any elements left in the stream, the Incomplete exception is raised." >> >> XTReadStream>>#read: anInteger >> "Read anInteger's worth of elements from self and return them in a collection. >> If full anInteger number of elements cannot be read from the source, the Incomplete exception is raised." >> >> >> funny how the comments are good. No need to change them. This is a sign. > >

March 25, 2015

Re: [Pharo-users] Using Google service discovery API's with Pharo Smalltalk by Richard J. Prinz

by stepharo

+ 1 and it is on pharo weekly :) Le 23/3/15 22:17, Sven Van Caekenberghe a Ã©crit : > I hadn't seen this posted on the mailing list, but this is really cool stuff. > > Using Google service discovery API's with Pharo Smalltalk by Richard J. Prinz > >> http://www.min.at/prinz/?x=entry:entry150318-104537 <http://www.min.at/prinz/?x=entry:entry150318-104537;comments:1#comments> > Nice work, Richard ! > > Sven >

March 25, 2015

Re: [Pharo-users] Boardician (board game framework)

by stepharo

Le 25/3/15 16:32, Laura Risani a Ã©crit : > @olivier > I guess that playing to test them should be considered to work. > > @kilon > Mail me back if you do develop a game adding from you graphical > capabilities. > > @stepharo , Ben > Code review would be nice! > > I've tried to chose the most meaningful names, yet i didn't discuss > this with anyone, what would be adequate since communication is > interpersonal. If you show me, telling why, you think another name > would communicate better instead a current one i'll change it. Also > i'd like more people to have an opinion on this. > > I agree that games' director names are meaningless, seems that > something like '(BG)DirectorOfGameName' would communicate better and > be more practical since when you type 'BGDirector' code completition > will show all the existing game director subclasses, that is all the > games. > > @stepharo > I subclass from MatrixBGBoardSpace and DPPieceLayout. These are > respectively matrix arrangements of places (BGBoardPlace) and squares > (DPSquare) that (potentially) need to understand all Matrix interface > in addition to extending it (for example class side methods for > instantiating particular space cases like level spaces, instance side > methods for telling space properties). I think it's like having to > model matrix of numbers that would need to support all math > matrix operations, why not to subclass? why to rewrite all > matrix interface? Favor subtyping over subclassing. A subclass Matrix should be a specific Matrix with matrix behavior. Subclassing is not a really good practice. It is code reuse but this is short term. Imagine that tomorrow we put some eigenvalues in Matrix will this eigenValue make sense for your board. I do not think so. Following the same we removed in Pharo Dictionary as subclass of Set. Now dictionary is a subclass of HashedCollection. We did not because it did not work but because it sucked and let to all kind of understanding problems. > Composition takes place at the level of BGBoard and DPPiece (which are > respectively composed by aBGBoardSpace and aDPPieceLayout), so > substitution could occur there if you need a non matrix space (is that > to be expected?). > Why do you think composing BGBoardSpace and DPPieceLayout would be better? > > > > > On Wed, Mar 25, 2015 at 9:01 AM, Ben Coman <btc(a)openinworld.com > <mailto:btc@openinworld.com>> wrote: > > One pattern is that the main application class be fully named, > leaving the mnemonic prefix for the support classes. > cheers -ben > > On Wed, Mar 25, 2015 at 4:14 PM, stepharo <stepharo(a)free.fr > <mailto:stepharo@free.fr>> wrote: > > Hi laura > > I would do a massive rename :) > > EDirector new play. > does not tell me anything > > BPDirector new play. > DPDirector new play. > GDirector new play. > > neither :) > > Stef > > Le 24/3/15 15:41, Laura Risani a Ã©crit : >> Hi all, >> >> A time ago i posted two board games on the list and StÃ©phane >> said that he would like to extract from these and other ones >> he has gathered a framework for doing board games. So i >> developed a little one called 'Boardician' and implemented >> four little example games through it. >> >> DOCUMENTATION >> http://boardician.blogspot.com.ar/2015/03/boardician.html >> >> DOWNLOAD <https://www.blogger.com/null> >> You can install configuration BgBoardician from Configuration >> Browser on 3.0 and 4.0 . This will download packages of >> framework (BgBoardician) and example games (BgBoxPush, >> BgEatBullet, BgDropPiece, BgEatElongating) >> >> To run example games send >> >> EDirector new play. >> BPDirector new play. >> DPDirector new play. >> GDirector new play. >> >> >> FEEDBACK <https://www.blogger.com/null> >> If you like (i would really like you to) to send any feedback >> comments on design / names / implementation / functionalities >> to add / questions you can post a comment on the blog / mail me. >> >> Next i'll be adding tests and uploading development history >> to project's repo. >> >> Best, >> Laura > > >

March 25, 2015

Monitoring spotter

by Alexandre Bergel

Hi! The GT crew recently introduces in Pharo a way to keep track of what people are searching in the system. This is a highly valuable piece of information that could benefit everybody. For example, I would love to know which Roassal classes are looking the most often. Or which Roassal examples people are repeatedly searching. However, this is hard to know currently. The reason is because of anonymity. No strings are stored in what is being sent over. To me, this is _highly counter-productive_: if you are working with sensitive information (I donât personally), then do not send things over. But enforcing anonymity generate frustration. So, here is my call: If you care about letting us improving the tools everybody use, feel free to reveal your identity. Simply send the result of the following expression: GTSpotterEventRecorderSettings uniqueInstance secretUUID hash For me => 195966943 Cheers, Alexandre -- _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: Alexandre Bergel http://www.bergel.eu ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;.

March 25, 2015

Re: [Pharo-users] Git overriding repo load from different source

by Dale Henrichs

On 3/25/15 1:35 AM, Jan B. wrote: > Hello > > I was able to get by those warnings automatically by adding onLock: [ :ex | > ex disallow ]; in addition to onConflict > > Metacello new > baseline: '...' > repository: 'gitfiletree:///.../repository' > onConflict: [ :ex | ex allow ]; > onLock: [ :ex | ex disallow ]; > load > > I'm not sure whether it couldn't cause any problems, but it seems to be > working. > I'd recommend that you not put in the unconditional onConflict: ... at one point in time the onConflict: was required to handle locks, but currently the default handler for onConflict: will honor locks and the default handler for onLock: will dump signal a Warning and then honor the lock. Putting in onLock: as you've done _is_ a good way to bypass the onLock: Warnings ... you can use `honor` instead of `disallow` and `break` instead of `allow` for the onLock: notification as those messages read a bit better ... The interesting onConflict: notifications occur when an incoming project decides to change the version or repository or configuration type (BaselineOf or ConfigurationOf) ... so if you care to know when this type of thing happens, then you can _leave off the onConflict:_ and you'll get a chance to decide if you want to have that change made to your system, before it is loaded rather than discover the change after it is loaded ... this is basically why I added the onLock: message - so that you weren't tempted to add an uncoditional onConflict: block just because you were working with locks:) Dale

March 25, 2015

Re: [Pharo-users] Git overriding repo load from different source

by Dale Henrichs

On 3/24/15 11:47 PM, Peter UhnÃ¡k wrote: > On Sun, Mar 22, 2015 at 11:19 PM, Dale Henrichs > <dale.henrichs(a)gemtalksystems.com > <mailto:dale.henrichs@gemtalksystems.com>> wrote: > > I keep an eye out for posts with Metacello in the subject line so > I missed this one ... > > I'll keep that in mind next time. > > If so then the trick is to use the Metacello `lock` ... Do the > following BEFORE loading the project that depends upon you sample > project: > > Combined with onConflict: mentioned by Thierry this works like a > charm, thanks a lot. :) > > (a Warning is dumped to the transcript) ... > > I got a warning prompt which I had confirm ("proceed") couple of > times, but that's just a detail. > Peter, There's an onWarningLog message that will catch the Warning, log it to the Transcript and proceeed ... there's also an onWarning: message that lets you customize your response ... Dale

March 25, 2015

Re: [Pharo-users] Boardician (board game framework)

by Laura Risani

@olivier I guess that playing to test them should be considered to work. @kilon Mail me back if you do develop a game adding from you graphical capabilities. @stepharo , Ben Code review would be nice! I've tried to chose the most meaningful names, yet i didn't discuss this with anyone, what would be adequate since communication is interpersonal. If you show me, telling why, you think another name would communicate better instead a current one i'll change it. Also i'd like more people to have an opinion on this. I agree that games' director names are meaningless, seems that something like '(BG)DirectorOfGameName' would communicate better and be more practical since when you type 'BGDirector' code completition will show all the existing game director subclasses, that is all the games. @stepharo I subclass from Matrix BGBoardSpace and DPPieceLayout. These are respectively matrix arrangements of places (BGBoardPlace) and squares (DPSquare) that (potentially) need to understand all Matrix interface in addition to extending it (for example class side methods for instantiating particular space cases like level spaces, instance side methods for telling space properties). I think it's like having to model matrix of numbers that would need to support all math matrix operations, why not to subclass? why to rewrite all matrix interface? Composition takes place at the level of BGBoard and DPPiece (which are respectively composed by aBGBoardSpace and aDPPieceLayout), so substitution could occur there if you need a non matrix space (is that to be expected?). Why do you think composing BGBoardSpace and DPPieceLayout would be better? On Wed, Mar 25, 2015 at 9:01 AM, Ben Coman <btc(a)openinworld.com> wrote: > One pattern is that the main application class be fully named, leaving the > mnemonic prefix for the support classes. > cheers -ben > > On Wed, Mar 25, 2015 at 4:14 PM, stepharo <stepharo(a)free.fr> wrote: > >> Hi laura >> >> I would do a massive rename :) >> >> EDirector new play. >> does not tell me anything >> >> BPDirector new play. >> DPDirector new play. >> GDirector new play. >> >> neither :) >> >> Stef >> >> Le 24/3/15 15:41, Laura Risani a Ã©crit : >> >> Hi all, >> >> A time ago i posted two board games on the list and StÃ©phane said that >> he would like to extract from these and other ones he has gathered a >> framework for doing board games. So i developed a little one called >> 'Boardician' and implemented four little example games through it. >> >> DOCUMENTATION >> http://boardician.blogspot.com.ar/2015/03/boardician.html >> >> DOWNLOAD <https://www.blogger.com/null> >> You can install configuration BgBoardician from Configuration Browser on >> 3.0 and 4.0 . This will download packages of framework (BgBoardician) and >> example games (BgBoxPush, BgEatBullet, BgDropPiece, BgEatElongating) >> >> To run example games send >> >> EDirector new play. >> BPDirector new play. >> DPDirector new play. >> GDirector new play. >> >> >> FEEDBACK <https://www.blogger.com/null> >> If you like (i would really like you to) to send any feedback comments on >> design / names / implementation / functionalities to add / questions you >> can post a comment on the blog / mail me. >> >> Next i'll be adding tests and uploading development history to >> project's repo. >> >> Best, >> Laura >> >> >> >

March 25, 2015