August 2016 - Pharo-users - lists.pharo.org

changing theme colors of windows without closing them

by Peter Uhnak

Hi, I fairly often switch themes (sometimes daily), and the fact that windows don't properly switch is quite annoying as I have to close literally everything and start over. Is there a way to force-reload the colors without closing the windows? For Nautilus I could probably script something like this (NautilusUI allInstances select: [ :each | each window owner = World ]) do: [ :each | |new| new := each fullBrowse. new ui window position: each window position. each close. ]. both for the rest (GTInspector in particular) I cannot just close them because I have live data there. Thanks, Peter

Aug. 14, 2016

Re: [Pharo-users] How does one specify a format for an ImageMorph based on a binary stream

by Sven Van Caekenberghe

ImageReadWriter formFromStream: 'http://pharo.org/files/pharo.png' asUrl retrieveContents readStream (ImageReadWriter formFromStream: 'http://pharo.org/files/pharo.png' asUrl retrieveContents readStream) asMorph openInWindow > On 14 Aug 2016, at 04:51, Hilaire <hilaire(a)drgeo.eu> wrote: > > I am not sure to understand you, but should you not use: > > ImageReadWriter class>>formFromStream: > > Then use Form or BitBlt protocols for your bits manipulations? > > Hilaire > > Le 14/08/2016 Ã 10:02, Andy Burnett a Ã©crit : >> I am trying to do some simple image manipulation. Basically, I want to >> subtract one image from another, to see what's left. >> >> As an experiment, did >> >> aStream := ReadStream on: image1 imageExport. >> newImageMorph := ImageMorph fromStream:aStream. >> >> Unfortunately, this fails because there is no subclass to handle the >> binary stream. I couldn't find a way to specify what format the image >> was in. Does anyone know how to do this? >> >> Cheers >> Andy > > -- > Dr. Geo > http://drgeo.eu > >

Aug. 14, 2016

Re: [Pharo-users] How does one specify a format for an ImageMorph based on a binary stream

by Hilaire

I am not sure to understand you, but should you not use: ImageReadWriter class>>formFromStream: Then use Form or BitBlt protocols for your bits manipulations? Hilaire Le 14/08/2016 Ã 10:02, Andy Burnett a Ã©crit : > I am trying to do some simple image manipulation. Basically, I want to > subtract one image from another, to see what's left. > > As an experiment, did > > aStream := ReadStream on: image1 imageExport. > newImageMorph := ImageMorph fromStream:aStream. > > Unfortunately, this fails because there is no subclass to handle the > binary stream. I couldn't find a way to specify what format the image > was in. Does anyone know how to do this? > > Cheers > Andy -- Dr. Geo http://drgeo.eu

Aug. 14, 2016

How does one specify a format for an ImageMorph based on a binary stream

by Andy Burnett

I am trying to do some simple image manipulation. Basically, I want to subtract one image from another, to see what's left. As an experiment, did aStream := ReadStream on: image1 imageExport. newImageMorph := ImageMorph fromStream:aStream. Unfortunately, this fails because there is no subclass to handle the binary stream. I couldn't find a way to specify what format the image was in. Does anyone know how to do this? Cheers Andy

Aug. 14, 2016

Re: [Pharo-users] Mea Culpa

by horrido

hernanmd wrote > I am not that convinced Smalltalk should be popular. Surely any > smalltalker > could find easily (more) job offers, that would be the only determinant > factor because we need desperately more Smalltalk positions. But > popularity > has many drawbacks.... some smalltalkers are afraid to competition, and we > all read the StackOverflow 'popular' questions... One of the chief reasons I would like Smalltalk to be more popular is to spur the expansion of the Pharo (Smalltalk) ecosystem, i.e., domain-specific class libraries. For example, I'm interested in A.I. and machine learning. This involves a great deal of statistical and numerical computing, an area where Pharo (Smalltalk) is not particularly strong. Python, on the other hand, has *fabulous* support for statistical and numerical computing, which frankly makes me very envious. The reason why Python has this is because of its vast user base, i.e., its /popularity/. There simply aren't enough Smalltalkers interested in statistical and numerical computing to develop such libraries. -- View this message in context: http://forum.world.st/Mea-Culpa-tp4800840p4910913.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

Aug. 13, 2016

hooking into GTInspector tags

by Peter Uhnak

Hi, how can one hook into the GTInspector tags that can be filtered? Apparently I can assign a presentation to a tag with `<gtInspectorTag: #examples>`, however this works only if the tag name was already added. As this was done in GTInspector>>initialize, it makes the whole filtering idea quite useless (unless I explicitly initialize GTInspector, which is not the natural approach). Can't it just collect all the tags from the current presentations? Or can I somehow access the GTInspector instance from the `composite` argument? Thanks, Peter

Aug. 13, 2016

Re: [Pharo-users] [Garage] How to espace sql special chars in a query?

by Pierce Ng

On Fri, Aug 12, 2016 at 01:36:21PM +0200, Blondeau Vincent wrote: > > Which database? > Postgres PostgresV2 driver does not support the PostgreSQL extended query protocol which allows prepared statements, AFAIK. https://www.postgresql.org/docs/current/static/protocol-overview.html. As for escaping SQL, the ROE package has a class called RAEscapingSqlPrinter which may help. http://smalltalkhub.com/#!/~PharoExtras/ROE Pierce

Aug. 12, 2016

Re: [Pharo-users] [Garage] How to espace sql special chars in a query?

by Esteban A. Maringolo

Hi Vincent, I don't know which special characters are you trying to escape, but if simply send printString to the variable, it will escape any quote that would end the string literal. | variable statement | variable := 'Pharo''s O''Reilly book'. statement := 'SELECT ', variable printString. Transcript show: statement; cr. I don't know how Garage prepared statements work, because it doesn't follow the "?" placeholder convention. Regards, Esteban A. Maringolo 2016-08-12 5:34 GMT-03:00 Blondeau Vincent <vincent.blondeau(a)worldline.com>: > Hello, > > > > I am looking for a method that escape special characters for SQL queries. > > E.g.: I want to escape : â in a where expression: ââ¦.Where field1 = âââ, > myvariable , âââ â¦..â with myvariable := âdonâât doâ. > > I am using garage and haven't found it in the package. Does someone know > where I can found it? > > > > Thanks in advance, > > > > Best regards, > > Vincent > > > > > !!!************************************************************************************* > "Ce message et les piÃ¨ces jointes sont confidentiels et rÃ©servÃ©s Ã l'usage > exclusif de ses destinataires. Il peut Ã©galement Ãªtre protÃ©gÃ© par le secret > professionnel. Si vous recevez ce message par erreur, merci d'en avertir > immÃ©diatement l'expÃ©diteur et de le dÃ©truire. L'intÃ©gritÃ© du message ne > pouvant Ãªtre assurÃ©e sur Internet, la responsabilitÃ© de Worldline ne pourra > Ãªtre recherchÃ©e quant au contenu de ce message. Bien que les meilleurs > efforts soient faits pour maintenir cette transmission exempte de tout > virus, l'expÃ©diteur ne donne aucune garantie Ã cet Ã©gard et sa > responsabilitÃ© ne saurait Ãªtre recherchÃ©e pour tout dommage rÃ©sultant d'un > virus transmis. > > This e-mail and the documents attached are confidential and intended solely > for the addressee; it may also be privileged. If you receive this e-mail in > error, please notify the sender immediately and destroy it. As its integrity > cannot be secured on the Internet, the Worldline liability cannot be > triggered for the message content. Although the sender endeavours to > maintain a computer virus-free network, the sender does not warrant that > this transmission is virus-free and will not be liable for any damages > resulting from any virus transmitted.!!!"

Aug. 12, 2016

Re: [Pharo-users] [Garage] How to espace sql special chars in a query?

by Holger Freyther

> On 12 Aug 2016, at 13:36, Blondeau Vincent <vincent.blondeau(a)worldline.com> wrote: > > > I think that ' close the EXECUTE query and is not escaped by garage. you are right. The statement is very sub-optimal (but should be easy to fix). "If not it means by the moment that we are a named prepared statement and we execute that" argumentsString := arguments ifEmpty: [ '' ] ifNotEmpty: [ '(''', (''', ''' join: (arguments collect: #asString)), ''')' ]. ^ 'EXECUTE ', (self propertyAt: #statementId), argumentsString In GNU Smalltalk[1] I had used FFI to use libpg/PQexecParams[2] that allows to pass query and parameters separately. Garage implements the wire protocol but it should be possible to pass the parameters separately as well. It should be simple to use/add this protocol. holger [1] https://github.com/zecke/gnu-smalltalk-debian/blob/master/packages/dbd-post… [2] https://www.postgresql.org/docs/9.1/static/libpq-exec.html

Aug. 12, 2016

Re: [Pharo-users] [Garage] How to espace sql special chars in a query?

by Blondeau Vincent

> -----Message d'origine----- > De : Pharo-users [mailto:pharo-users-bounces@lists.pharo.org] De la part de > Holger Freyther > EnvoyÃ© : vendredi 12 aoÃ»t 2016 13:22 > Ã : Any question about pharo is welcome > Objet : Re: [Pharo-users] [Garage] How to espace sql special chars in a query? > > > > On 12 Aug 2016, at 12:10, Blondeau Vincent > <vincent.blondeau(a)worldline.com> wrote: > > > > BTW, even with prepared statements, it doesn't work either: > > SQL query : EXECUTE preparedStmtd2qbaa1ap7ceiaq643sxlkyyw('Quand > l'utilisateur est connectÃ© sur "son serveur"', '1277') > > -> 'ERREUR: erreur de syntaxe sur ou prÃ¨s de Â« utilisateur Â» au caractÃ¨re 56' > (Syntax error near char 56) > > Which database? Postgres > What does the statement look like? SELECT id FROM method WHERE name = $1 AND class_id = $2 > What are the bound variables? > > E.g. is the string supposed to be UTF8 or a blob? CREATE TABLE method ( Id serial, name character varying, class_id integer ) The database scheme is configured in UTF8 -> en_US.UTF8 I think that ' close the EXECUTE query and is not escaped by garage. Vincent !!!************************************************************************************* "Ce message et les piÃ¨ces jointes sont confidentiels et rÃ©servÃ©s Ã l'usage exclusif de ses destinataires. Il peut Ã©galement Ãªtre protÃ©gÃ© par le secret professionnel. Si vous recevez ce message par erreur, merci d'en avertir immÃ©diatement l'expÃ©diteur et de le dÃ©truire. L'intÃ©gritÃ© du message ne pouvant Ãªtre assurÃ©e sur Internet, la responsabilitÃ© de Worldline ne pourra Ãªtre recherchÃ©e quant au contenu de ce message. Bien que les meilleurs efforts soient faits pour maintenir cette transmission exempte de tout virus, l'expÃ©diteur ne donne aucune garantie Ã cet Ã©gard et sa responsabilitÃ© ne saurait Ãªtre recherchÃ©e pour tout dommage rÃ©sultant d'un virus transmis. This e-mail and the documents attached are confidential and intended solely for the addressee; it may also be privileged. If you receive this e-mail in error, please notify the sender immediately and destroy it. As its integrity cannot be secured on the Internet, the Worldline liability cannot be triggered for the message content. Although the sender endeavours to maintain a computer virus-free network, the sender does not warrant that this transmission is virus-free and will not be liable for any damages resulting from any virus transmitted.!!!"

Aug. 12, 2016