September 2011 - Pharo-users

Re: [Pharo-users] [COTDC] 84#2- MCMergeRecord

by laurent laffont

Today: MCMergeRecord Laurent On Sat, Sep 10, 2011 at 9:32 AM, laurent laffont <laurent.laffont(a)gmail.com>wrote: > Today: FreeTypeCacheLinkedList > > > Comment Of The Day Contest - One Day One Comment > Rules: > #1: Each day a not commented class is elected. Each day the best comment > will be integrated with name of the author(s). > #2: If you cannot comment it, deprecate it. > Results: http://code.google.com/p/pharo/wiki/CommentOfTheDayContest > > Laurent >

Sept. 14, 2011

State of art for testing tools in Pharo?

by Simon Denier

I would like to know what's the state of the art when it comes to tests in Pharo. What are the habits? The best practices? Is there any ongoing development? I stumble upon that this morning (through twitter) http://www.lshift.net/blog/2011/09/13/checking-squeak-quickly Especially, I am interested in the following topics: - any framework to perform BDD? What's the status of SSpec? I also saw that Sean was starting to play with Cucumber, I would be very interested to see that - developing a Seaside app in TDD/BDD mode? Is there a tutorial out there about that? I stumbled upon Seaside Testing, which looks like an interesting layer http://www.shaffer-consulting.com/david/Seaside/TestingComponents/TestingCo… -- Simon Denier

Sept. 14, 2011

Smalltalk Stammtisch ZÃ¼rich: Tuesday, September 27, 2011

by Lukas Renggli

Dear Smalltalkers, After the last successful meeting in February, we plan to do another Smalltalk Stammtisch (beer drinking event) at the same location: - Tuesday, September 27, 2011, 18:00 - Steinfels ZÃ¼rich, http://www.steinfels-zuerich.ch/ - http://g.co/maps/8zd59 Please let us know if you plan to attend so that we can book a table. Lukas and Philippe

Sept. 12, 2011

Re: [Pharo-users] New version of Little Number Chapter

by Igor Stasenko

2r1101 returns 13 13 printStringBase: 2 returns '1101' Integer readFrom: '1101' base: 2 returns 13 maybe 'answers' instead of returns? since in smalltalk we're sending messages and getting answers :) On 11 September 2011 09:21, StÃ©phane Ducasse <stephane.ducasse(a)inria.fr> wrote: > Hi guys > > I took into account the remarks of mariano and I imagine that the chapter improved. It can be obvious for some people > but I like to make sure that we all find this obvious. Because it is not difficult once you spend a little time on it. > Now if somebody wants to extend and improve, he/she welcome. > > I will continue to work on the others chapters. > > > > > > Stef > A guy that truly believe that software is only done when the documentation is packed too. > > > -- Best regards, Igor Stasenko.

Sept. 12, 2011

CSS queries on an HTML Document

by jasiek

Hey, I've looked at a couple of packages that are available on squeaksource, but I couldn't find exactly what I was looking for. Is there a package for Pharo that would let me query a document through CSS selectors and return a matching collection of nodes? Thanks, Jan -- View this message in context: http://forum.world.st/CSS-queries-on-an-HTML-Document-tp3806858p3806858.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

Sept. 12, 2011

Re: [Pharo-users] [Pharo-project] New version of Little Number Chapter

by Mariano Martinez Peck

On Mon, Sep 12, 2011 at 1:41 AM, John Toohey <jt(a)parspro.com> wrote: > Nice chapter. Working some of the examples, and with the latest 1.3 > release, bitString is not available. Is this part of 1.4? > Yes. > > On Sun, Sep 11, 2011 at 02:21, StÃ©phane Ducasse > <stephane.ducasse(a)inria.fr> wrote: > > Hi guys > > > > I took into account the remarks of mariano and I imagine that the chapter > improved. It can be obvious for some people > > but I like to make sure that we all find this obvious. Because it is not > difficult once you spend a little time on it. > > Now if somebody wants to extend and improve, he/she welcome. > > > > I will continue to work on the others chapters. > > > > > > > > > > > > Stef > > A guy that truly believe that software is only done when the > documentation is packed too. > > > > > > > > > > -- > ~JT > > -- Mariano http://marianopeck.wordpress.com

Sept. 12, 2011

Re: [Pharo-users] Simple math editor/typesetter

by Lukas Renggli

> What happens in Pier-Math? I only know that Pier is a CMS on Seaside so I'm > not > too familiar with the internal details. I assume that Pier-Math has some > parser > and renders to HTML (perhaps using MathML or something). Does it render to > Morphic? No morphic rendering other than showing an image as morph. Pier-Math just does the transformation from LaTeX to PNG locally using OSProcess instead of relying on an external web service. -- Lukas Renggli www.lukas-renggli.ch

Sept. 12, 2011

Re: [Pharo-users] Simple math editor/typesetter

by Nick Chen

Thanks for pointing out Google infographics; didn't know that it could also display equations. Preferably, I would like it to display using Morphs so that I can have more options for interactivity e.g. editing and drag-and-drop. I already have a parser implemented; this whole thing is part of a bigger project and I'm working on the display part currently. What happens in Pier-Math? I only know that Pier is a CMS on Seaside so I'm not too familiar with the internal details. I assume that Pier-Math has some parser and renders to HTML (perhaps using MathML or something). Does it render to Morphic? Are there any existing things that can render using Morphic directly in the Smalltalk image? Thanks. -- Nick Lukas Renggli wrote: > > On 11 September 2011 18:51, Lukas Renggli <renggli(a)gmail.com> wrote: >> The Google infographic web service is probably the simplest one to use >> (there are many others): http://code.google.com/apis/chart/infographics/ >> You post a formula and get back a PNG that you display as a morph. Should >> be >> doable in 1 line of Smalltalk code. > > Also works with HTTPSocket instead of ZnClient, if you don't use Zinc: > > (ZnClient getPng: 'http://chart.googleapis.com/chart?cht=tx&chl=' , > 'a^2+b^2=c^2' encodeForHTTP) asMorph openInHand > > >> >> Of course you can do the processing also yourself, but this is more >> complicated. Pier-Math does that for example. >> >> Lukas >> >> >> On Sunday, 11 September 2011, Nick Chen <nchen.dev(a)mac.com> wrote: >>> Hi >>> >>> I'm working with some simple math equations and am looking for a nicer >>> way >>> to >>> display them. Is there any existing work that I might be able to >>> re-use/build >>> upon? >>> >>> For instance, given this equation, (1+2/3)*4 I would like to see it >>> displayed >>> like the Equation Editor in Microsoft Word or the equations in a >>> Mathematica >>> notebook. See attached screenshots: >>> >>> http://forum.world.st/file/n3805250/word.png >>> >>> http://forum.world.st/file/n3805250/mathematica.png >>> >>> I'm not looking for anything fancy. Something simple to get me started >>> would >>> be helpful as well. >>> >>> I looked briefly at Dr. Geo but I don't think it support displaying >>> equations in that >>> manner. >>> >>> Thanks! >>> >>> -- >>> Nick >>> >>> -- >>> View this message in context: >>> http://forum.world.st/Simple-math-editor-typesetter-tp3805250p3805250.html >>> Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com. >>> >>> >> >> -- >> Lukas Renggli >> www.lukas-renggli.ch >> > > > > -- > Lukas Renggli > www.lukas-renggli.ch > -- View this message in context: http://forum.world.st/Simple-math-editor-typesetter-tp3805250p3805696.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

Sept. 11, 2011

Re: [Pharo-users] Simple math editor/typesetter

by Lukas Renggli

On 11 September 2011 18:51, Lukas Renggli <renggli(a)gmail.com> wrote: > The Google infographic web service is probably the simplest one to use > (there are many others): http://code.google.com/apis/chart/infographics/ > You post a formula and get back a PNG that you display as a morph. Should be > doable in 1 line of Smalltalk code. Also works with HTTPSocket instead of ZnClient, if you don't use Zinc: (ZnClient getPng: 'http://chart.googleapis.com/chart?cht=tx&chl=' , 'a^2+b^2=c^2' encodeForHTTP) asMorph openInHand > > Of course you can do the processing also yourself, but this is more > complicated. Pier-Math does that for example. > > Lukas > > > On Sunday, 11 September 2011, Nick Chen <nchen.dev(a)mac.com> wrote: >> Hi >> >> I'm working with some simple math equations and am looking for a nicer way >> to >> display them. Is there any existing work that I might be able to >> re-use/build >> upon? >> >> For instance, given this equation, (1+2/3)*4 I would like to see it >> displayed >> like the Equation Editor in Microsoft Word or the equations in a >> Mathematica >> notebook. See attached screenshots: >> >> http://forum.world.st/file/n3805250/word.png >> >> http://forum.world.st/file/n3805250/mathematica.png >> >> I'm not looking for anything fancy. Something simple to get me started >> would >> be helpful as well. >> >> I looked briefly at Dr. Geo but I don't think it support displaying >> equations in that >> manner. >> >> Thanks! >> >> -- >> Nick >> >> -- >> View this message in context: >> http://forum.world.st/Simple-math-editor-typesetter-tp3805250p3805250.html >> Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com. >> >> > > -- > Lukas Renggli > www.lukas-renggli.ch > -- Lukas Renggli www.lukas-renggli.ch

Sept. 11, 2011

Re: [Pharo-users] Simple math editor/typesetter

by Lukas Renggli

The Google infographic web service is probably the simplest one to use (there are many others): http://code.google.com/apis/chart/infographics/ You post a formula and get back a PNG that you display as a morph. Should be doable in 1 line of Smalltalk code. Of course you can do the processing also yourself, but this is more complicated. Pier-Math does that for example. Lukas On Sunday, 11 September 2011, Nick Chen <nchen.dev(a)mac.com> wrote: > Hi > > I'm working with some simple math equations and am looking for a nicer way > to > display them. Is there any existing work that I might be able to > re-use/build > upon? > > For instance, given this equation, (1+2/3)*4 I would like to see it > displayed > like the Equation Editor in Microsoft Word or the equations in a Mathematica > notebook. See attached screenshots: > > http://forum.world.st/file/n3805250/word.png > > http://forum.world.st/file/n3805250/mathematica.png > > I'm not looking for anything fancy. Something simple to get me started would > be helpful as well. > > I looked briefly at Dr. Geo but I don't think it support displaying > equations in that > manner. > > Thanks! > > -- > Nick > > -- > View this message in context: http://forum.world.st/Simple-math-editor-typesetter-tp3805250p3805250.html > Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com. > > -- Lukas Renggli www.lukas-renggli.ch

Sept. 11, 2011

Simple math editor/typesetter

by Nick Chen

Hi I'm working with some simple math equations and am looking for a nicer way to display them. Is there any existing work that I might be able to re-use/build upon? For instance, given this equation, (1+2/3)*4 I would like to see it displayed like the Equation Editor in Microsoft Word or the equations in a Mathematica notebook. See attached screenshots: http://forum.world.st/file/n3805250/word.png http://forum.world.st/file/n3805250/mathematica.png I'm not looking for anything fancy. Something simple to get me started would be helpful as well. I looked briefly at Dr. Geo but I don't think it support displaying equations in that manner. Thanks! -- Nick -- View this message in context: http://forum.world.st/Simple-math-editor-typesetter-tp3805250p3805250.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

Sept. 11, 2011

Re: [Pharo-users] New version of Little Number Chapter

by Mariano Martinez Peck

These chapters are drafts for the future book Pharo By Example 2. The first one is in: http://pharobyexample.org/ On Sun, Sep 11, 2011 at 1:07 PM, Larry White <ljw1001(a)gmail.com> wrote: > What book is this? > > On Sun, Sep 11, 2011 at 2:21 AM, StÃ©phane Ducasse < > stephane.ducasse(a)inria.fr> wrote: > >> Hi guys >> >> I took into account the remarks of mariano and I imagine that the chapter >> improved. It can be obvious for some people >> but I like to make sure that we all find this obvious. Because it is not >> difficult once you spend a little time on it. >> Now if somebody wants to extend and improve, he/she welcome. >> >> I will continue to work on the others chapters. >> >> >> >> >> >> Stef >> A guy that truly believe that software is only done when the documentation >> is packed too. >> >> >> > -- Mariano http://marianopeck.wordpress.com

Sept. 11, 2011

Re: [Pharo-users] New version of Little Number Chapter

by Larry White

What book is this? On Sun, Sep 11, 2011 at 2:21 AM, StÃ©phane Ducasse <stephane.ducasse(a)inria.fr > wrote: > Hi guys > > I took into account the remarks of mariano and I imagine that the chapter > improved. It can be obvious for some people > but I like to make sure that we all find this obvious. Because it is not > difficult once you spend a little time on it. > Now if somebody wants to extend and improve, he/she welcome. > > I will continue to work on the others chapters. > > > > > > Stef > A guy that truly believe that software is only done when the documentation > is packed too. > > >

Sept. 11, 2011

New version of Little Number Chapter

by StÃ©phane Ducasse

Hi guys I took into account the remarks of mariano and I imagine that the chapter improved. It can be obvious for some people but I like to make sure that we all find this obvious. Because it is not difficult once you spend a little time on it. Now if somebody wants to extend and improve, he/she welcome. I will continue to work on the others chapters. Stef A guy that truly believe that software is only done when the documentation is packed too.

Sept. 11, 2011

Re: [Pharo-users] SandstoneDB, Fuel - Contexts must only be created with newForMethod:

by Ramon Leon

On 09/10/2011 02:23 AM, Mariano Martinez Peck wrote: > Yes, basically because it is likely you will end up serializing a whole > stack. If you follow a BlockClosure sender sender sender blah blah > home home blah blah > yes...it is complicated. Hence my advice when attempting to save blocks in SandstoneDb... don't do that. Databases are for data, not for suspended execution environments like closures. -- Ramon Leon http://onsmalltalk.com

Sept. 10, 2011

Re: [Pharo-users] SandstoneDB, Fuel - Contexts must only be created with newForMethod:

by Mariano Martinez Peck

On Fri, Sep 9, 2011 at 7:55 PM, Ramon Leon <ramon.leon(a)allresnet.com> wrote: > On 09/09/2011 10:50 AM, Mariano Martinez Peck wrote: > >> Be careful with SortedCollection instances for example ;) >> > > Yes, SandstoneDb can't store those because of the sort block, store an > OrderedCollection and sort it on the fly when you need it. Maybe I'll add > support since Fuel supports it, but I have a feeling it's a can of worms I > don't want to open for lack of commitment at the moment. Yes, basically because it is likely you will end up serializing a whole stack. If you follow a BlockClosure sender sender sender blah blah home home blah blah yes...it is complicated. > > > -- > Ramon Leon > http://onsmalltalk.com > > -- Mariano http://marianopeck.wordpress.com

Sept. 10, 2011

[COTDC] 84 - FreeTypeCacheLinkedList

by laurent laffont

Today: FreeTypeCacheLinkedList Comment Of The Day Contest - One Day One Comment Rules: #1: Each day a not commented class is elected. Each day the best comment will be integrated with name of the author(s). #2: If you cannot comment it, deprecate it. Results: http://code.google.com/p/pharo/wiki/CommentOfTheDayContest Laurent

Sept. 10, 2011

Re: [Pharo-users] [Pharo-project] [COTDC] 83 - MCVersionInspector

by laurent laffont

Thanks again Sean Laurent. On Thu, Sep 8, 2011 at 11:06 PM, Sean P. DeNigris <sean(a)clipperadams.com>wrote: > I am a tool that visually represents an MCVersion. > > While I can be opened on anMCVersion, you've probably seen me most often > after saving a package in the Monticello Browser. > > I have buttons to perform common version-related actions - like browsing, > loading, and viewing changes. In my main text area, I display the following > information about my version - name, author, timestamp, UUID, ancestors and > log message. > > -- > View this message in context: > http://forum.world.st/COTDC-83-MCVersionInspector-tp3800071p3800124.html > Sent from the Pharo Smalltalk mailing list archive at Nabble.com. > >

Sept. 10, 2011

Re: [Pharo-users] SandstoneDB, Fuel - Contexts must only be created with newForMethod:

by Ramon Leon

On 09/09/2011 11:13 AM, Paul DeBruicker wrote: > Seems like I should just use the onBeforeSave and onAfterSave to switch > between Timepoint instances to DateAndTime for storing the dates and > times. Plus the timeZones. > > Or is there another strategy you'd recommend? > > Thanks That sounds reasonable actually, sort of a manual serialization prep down to raw data. However, you'd need an onLoad as well for a fresh image start from disk. I just realized I don't have a load event; I'll add one. -- Ramon Leon http://onsmalltalk.com

Sept. 9, 2011

Re: [Pharo-users] SandstoneDB, Fuel - Contexts must only be created with newForMethod:

by Paul DeBruicker

> Re: SandstoneDB, Fuel - Contexts must only be created with newForMethod: > > In reply to this post by Paul DeBruicker > On 09/09/2011 10:36 AM, Paul DeBruicker wrote: >> >> #sandstoneDeepCopyVisits: is calling basicNew: on the class MethodContext. > > Because SandstoneDb isn't meant to save special objects like classes, > blocks, or method context's, it's meant to save plain old Smalltalk data > objects from your domain the same way you'd use a relational database. > It's a simple active record data store for quick prototyping based on > serialized files, not a full blown object database that can save every > possible object type. > I've attached the PharoDebug.log. It seems to be choking when trying to save an instance of a RangeConstraint class from the Chronos package. The RangeConstraint class stores two different blocks in two different i-vars. The RangeConstrait is there because I'm saving instances of the Timepoint class from the Chronos package. Seems like I should just use the onBeforeSave and onAfterSave to switch between Timepoint instances to DateAndTime for storing the dates and times. Plus the timeZones. Or is there another strategy you'd recommend? Thanks Paul

Sept. 9, 2011

Re: [Pharo-users] SandstoneDB, Fuel - Contexts must only be created with newForMethod:

by Ramon Leon

On 09/09/2011 10:50 AM, Mariano Martinez Peck wrote: > Be careful with SortedCollection instances for example ;) Yes, SandstoneDb can't store those because of the sort block, store an OrderedCollection and sort it on the fly when you need it. Maybe I'll add support since Fuel supports it, but I have a feeling it's a can of worms I don't want to open for lack of commitment at the moment. -- Ramon Leon http://onsmalltalk.com

Sept. 9, 2011

Re: [Pharo-users] SandstoneDB, Fuel - Contexts must only be created with newForMethod:

by Mariano Martinez Peck

On Fri, Sep 9, 2011 at 7:48 PM, Ramon Leon <ramon.leon(a)allresnet.com> wrote: > On 09/09/2011 10:36 AM, Paul DeBruicker wrote: > >> >> #sandstoneDeepCopyVisits: is calling basicNew: on the class MethodContext. >> > > Because SandstoneDb isn't meant to save special objects like classes, > blocks, or method context's, it's meant to save plain old Smalltalk data > objects from your domain the same way you'd use a relational database. It's > a simple active record data store for quick prototyping based on serialized > files, not a full blown object database that can save every possible object > type. Be careful with SortedCollection instances for example ;) > > > And I'd guess that it's not a Fuel issue but a SandstoneDB issue because I >> get the same >> error if, when using the same image, in a workspace I change the >> SDSerializer to the >> SDSmartRefStreamSerializer and try again. >> > > Correct. Now, apparently fuel might be able to save some of those special > objects like blocks or classes indeed. Contexts, classes, CompiledMethod, etc... > , but SandstoneDb will throw an error if you attempt to save a class > regardless of what the serializer supports. > > -- > Ramon Leon > http://onsmalltalk.com > > -- Mariano http://marianopeck.wordpress.com

Sept. 9, 2011

Re: [Pharo-users] SandstoneDB, Fuel - Contexts must only be created with newForMethod:

by Mariano Martinez Peck

On Fri, Sep 9, 2011 at 7:44 PM, Paul DeBruicker <pdebruic(a)gmail.com> wrote: > And I'd guess that it's not a Fuel issue but a SandstoneDB issue because I > get the same error if, when using the same image, in a workspace I change > the SDSerializer to the SDSmartRefStreamSerializer and try again. > > I imagine. That's why I've asked. Maybe Ramon can help. You can also attach PharoDebug.log -- Mariano http://marianopeck.wordpress.com

Sept. 9, 2011

Re: [Pharo-users] SandstoneDB, Fuel - Contexts must only be created with newForMethod:

by Ramon Leon

On 09/09/2011 10:36 AM, Paul DeBruicker wrote: > > #sandstoneDeepCopyVisits: is calling basicNew: on the class MethodContext. Because SandstoneDb isn't meant to save special objects like classes, blocks, or method context's, it's meant to save plain old Smalltalk data objects from your domain the same way you'd use a relational database. It's a simple active record data store for quick prototyping based on serialized files, not a full blown object database that can save every possible object type. > And I'd guess that it's not a Fuel issue but a SandstoneDB issue because I get the same > error if, when using the same image, in a workspace I change the SDSerializer to the > SDSmartRefStreamSerializer and try again. Correct. Now, apparently fuel might be able to save some of those special objects like blocks or classes, but SandstoneDb will throw an error if you attempt to save a class regardless of what the serializer supports. -- Ramon Leon http://onsmalltalk.com

Sept. 9, 2011

Re: [Pharo-users] SandstoneDB, Fuel - Contexts must only be created with newForMethod:

by Paul DeBruicker

And I'd guess that it's not a Fuel issue but a SandstoneDB issue because I get the same error if, when using the same image, in a workspace I change the SDSerializer to the SDSmartRefStreamSerializer and try again.

Sept. 9, 2011