May 2014 - Pharo-dev - lists.pharo.org

Starting making bindings for OpenCL using NativeBoost.

by Ronie Salgado

Hello, I started working in making some basic bindings for OpenCL using NativeBoost. Currently I can run basics OpenCL OpenCL kernels. I tried to generate quickly some procedural images which was a success. I am going to be showing some more cool stuffs when mixing OpenCL+OpenGL+SDL2. Currently uploading my work into http://smalltalkhub.com/#!/~ronsaldo/OpenCL. No configuration or stable release yet. Greetings, Ronie

May 8, 2014

Re: [Pharo-dev] WTF and Programming Languages

by stepharo

Yes we know is and this is so funny. On 7/5/14 22:16, kilon alios wrote: > I dont know if you guys are aware of this talk, very funny , quite > weird , so I thought why not share it with you > > https://www.destroyallsoftware.com/talks/wat

May 8, 2014

Re: [Pharo-dev] Improving Pharo By Example

by stepharo

> > I also added Chapter 1 - Quick Tour in Pharo. Just the first part , > the chapter is of course still a WIP. > > I am not so sure what you mean about automated tests, are they for the > example code ? if you see in the tex when we have example we also have a tag that indicates that the code can be extracted and run. I do not remember but oscar did a script and we where able to automatically verify that all the simple examples were correctly working with a version of Pharo. Now in Pillar we should introduce the notion of tag to support at the word level. - index - comment - citation > > I am all for automation. > > > On Mon, May 5, 2014 at 11:08 PM, stepharo <stepharo(a)free.fr > <mailto:stepharo@free.fr>> wrote: > > This is really cool that people want to update the Pharo by > Example book. > This is a really an important task and it will have a real impact. > You can also reduce the number of screenshots or point related to > the interaction. > > What would be good is to make the automated tests working again > because we could spot > if we got some regressions. > > Stef > > > How I can help improve Pharo by Example , add chapters and > update current ones for Pharo 3 ? > > What is the process ? > > > >

May 8, 2014

About Spec second interpretation loop between Adapter and specific back end

by stepharo

Hi Ben When igor integrated his textEditor with Spec we saw that the relation between a model and its adapter is not direct but via another interpretation. For example MorphicButtonAdapter class>> defaultSpec ^ {#PluggableButtonMorph. #color:. Color white. #on:getState:action:label:menu:. #model. #state. #action. #label. nil. #getEnabledSelector:. #enabled. #getMenuSelector:. #menu:. #hResizing:. #spaceFill. #vResizing:. #spaceFill. #borderWidth:. #(model borderWidth). #borderColor:. #(model borderColor). #askBeforeChanging:. #(model askBeforeChanging). #setBalloonText:. { #model . #help}. #dragEnabled:. #(model dragEnabled). #dropEnabled:. #(model dropEnabled). #eventHandler:. { #EventHandler. #on:send:to:. #keyStroke. #keyStroke:fromMorph:. #model }} We do not understand why it is needed. Because the adapter is specific to a platform and to a model so For example why do we have #borderWidth:. #(model borderWidth). while we could have MorphiButtonAdapter>>borderWitdh ^ self model borderWidth Having this extra interpretation loop - is costly - blur the API of the class (as a programmer I do not see the exact API) the cross navigation gets confused. - makes the code more complex to understand for example #eventHandler:. { #EventHandler. #on:send:to:. #keyStroke. #keyStroke:fromMorph:. #model }} In addition is not a kind of static meta description so we will always need interpretation. So I would really like to see if we can avoid this second interpretation. Stef

May 8, 2014

Re: [Pharo-dev] System-Hashing and SecureHashAlgorithm ?

by Sven Van Caekenberghe

On 08 May 2014, at 02:11, mkobetic(a)gmail.com wrote: > "Mariano Martinez Peck"<marianopeck(a)gmail.com> wrote: >> I had the same problem. I added the following to my compatibility package. >> In Pharo now I do: >> >> shaHashMessage: aString >> "this method hashes aString using a SHA1 (SecureHashAlgorithm) method. >> Returns an integer" >> ^ (SHA1 new hashStream: aString readStream) asInteger > > This is very ambiguous API. SHA1 (and in fact all secure hash functions) are defined in terms of bytes, (bytes in, bytes out). This method doesn't specify the transformation that turns the aString into bytes (presumably some kind of encoding, but what is it?) and what transformation it does to turn the 20 bytes of SHA1 result into an Integer (does it interpret the bytes as big endian/little endian, or maybe it throws every second byte away in the process). It's OK to wrap the basic hashing API in helpers that accept other types of arguments for common use cases, but the basic API definitely should be bytes in/bytes out. Yes, very true. Like Esteban said, that is why we changed it. > HTH, > > Martin > >

May 8, 2014

Re: [Pharo-dev] System-Hashing and SecureHashAlgorithm ?

by mkobetic＠gmail.com

"Mariano Martinez Peck"<marianopeck(a)gmail.com> wrote: > I had the same problem. I added the following to my compatibility package. > In Pharo now I do: > > shaHashMessage: aString > "this method hashes aString using a SHA1 (SecureHashAlgorithm) method. > Returns an integer" > ^ (SHA1 new hashStream: aString readStream) asInteger This is very ambiguous API. SHA1 (and in fact all secure hash functions) are defined in terms of bytes, (bytes in, bytes out). This method doesn't specify the transformation that turns the aString into bytes (presumably some kind of encoding, but what is it?) and what transformation it does to turn the 20 bytes of SHA1 result into an Integer (does it interpret the bytes as big endian/little endian, or maybe it throws every second byte away in the process). It's OK to wrap the basic hashing API in helpers that accept other types of arguments for common use cases, but the basic API definitely should be bytes in/bytes out. HTH, Martin

May 8, 2014

Re: [Pharo-dev] WTF and Programming Languages

by Nicolas Cellier

I love these kind of snippets :) I have built a collection of freak expressions in Squeak3.9. Pharo 3.0 is less spectacular, above collection is shrinking dangerously... but there are still some not so unsurprising features to test for: 'hello' copyReplaceFrom: 6 to: 4 with: 'world'. (5 to: 10) at: 1.3. '' , #[119 104 97 116 63]. #[] , 'what?'. "honour is safe, it's sorta symmetric..." "Cases of special syntax. Is the behavior officially supported in some EBNF?" -2r-1. - 2. "Note the space between the two letters" 2014-05-07 22:47 GMT+02:00 phil(a)highoctane.be <phil(a)highoctane.be>: > > Le 7 mai 2014 22:17, "kilon alios" <kilon.alios(a)gmail.com> a Ã©crit : > > > > > I dont know if you guys are aware of this talk, very funny , quite weird > , so I thought why not share it with you > > > > https://www.destroyallsoftware.com/talks/wat > > Yeah, Amber kind of alleviates some of these pain points... >

May 7, 2014

Re: [Pharo-dev] Making screenshots programmatically for book

by Stephan Eggermont

This code allows me to generate some screenshots. The exporter deletes the old picture, if it exists. |directory exporter window bounds | directory := FileSystem workingDirectory / 'pictures' . directory ensureCreateDirectory. exporter := DOScreenshotExporter new. exporter directory: directory. exporter writeWorldAs: 'world.png'. window := DOPartiesList new openWithSpec window. exporter writeMorph: window value as: 'PartiesList.png'. bounds := window fullBounds. exporter writeMorph: window value rectangle: (bounds insetBy: 20@20) as: 'PartOfPartiesList.png'. window close.

May 7, 2014

Re: [Pharo-dev] WTF and Programming Languages

by phil＠highoctane.be

Le 7 mai 2014 22:17, "kilon alios" <kilon.alios(a)gmail.com> a Ã©crit : > > I dont know if you guys are aware of this talk, very funny , quite weird , so I thought why not share it with you > > https://www.destroyallsoftware.com/talks/wat Yeah, Amber kind of alleviates some of these pain points...

May 7, 2014

Re: [Pharo-dev] WTF and Programming Languages

by Sebastian Sastre

ROFL made my cry thanks for sharing XD On May 7, 2014, at 5:16 PM, kilon alios <kilon.alios(a)gmail.com> wrote: > I dont know if you guys are aware of this talk, very funny , quite weird , so I thought why not share it with you > > https://www.destroyallsoftware.com/talks/wat

May 7, 2014